N-CSRS

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF

REGISTERED MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-05440

MFS INTERMEDIATE INCOME TRUST

(Exact name of registrant as specified in charter)

111 Huntington Avenue, Boston, Massachusetts 02199

(Address of principal executive offices) (Zip code)

Christopher R. Bohane

Massachusetts Financial Services Company

111 Huntington Avenue

Boston, Massachusetts 02199

(Name and address of agents for service)

Registrant’s telephone number, including area code: (617) 954-5000

Date of fiscal year end: October 31

Date of reporting period: April 30, 2017

ITEM 1. REPORTS TO STOCKHOLDERS.

SEMIANNUAL REPORT

April 30, 2017

MFS® INTERMEDIATE INCOME TRUST

MIN-SEM

MANAGED DISTRIBUTION POLICY DISCLOSURE

The MFS Intermediate Income Trust’s (the fund) Board of Trustees adopted a managed distribution policy. The fund seeks to pay monthly distributions based on an annual rate of 8.5% of the fund’s average monthly net asset value. The primary purpose of the managed distribution policy is to provide shareholders with a constant, but not guaranteed, fixed minimum rate of distribution each month. You should not draw any conclusions about the fund’s investment performance from the amount of the current distribution or from the terms of the fund’s managed distribution policy. The Board may amend or terminate the managed distribution policy at any time without prior notice to fund shareholders. The amendment or termination of the managed distribution policy could have an adverse effect on the market price of the fund’s shares.

With each distribution, the fund will issue a notice to shareholders and an accompanying press release which will provide detailed information regarding the amount and composition of the distribution and other related information. The amounts and sources of distributions reported in the notice to shareholders are only estimates and are not being provided for tax reporting purposes. The actual amounts and sources of the amounts for tax reporting purposes will depend upon the fund’s investment experience during the remainder of its fiscal year and may be subject to changes based on tax regulations. The fund will send you a Form 1099-DIV for the calendar year that will tell you how to report these distributions for federal income tax purposes. Please refer to “Tax Matters and Distributions” under Note 2 of the Notes to Financial Statements for information regarding the tax character of the fund’s distributions.

Under a managed distribution policy the fund may at times distribute more than its net investment income and net realized capital gains; therefore, a portion of your distribution may result in a return of capital. A return of capital may occur, for example, when some or all of the money that you invested in the fund is paid back to you. Any such returns of capital will decrease the fund’s total assets and, therefore, could have the effect of increasing the fund’s expense ratio. In addition, in order to make the level of distributions called for under its managed distribution policy, the fund may have to sell portfolio securities at a less than opportune time. A return of capital does not necessarily reflect the fund’s investment performance and should not be confused with ‘yield’ or ‘income’. The fund’s total return in relation to changes in net asset value is presented in the Financial Highlights.

MFS® INTERMEDIATE INCOME TRUST

New York Stock Exchange Symbol: MIN

Letter from the Executive Chairman	1
Portfolio composition	2
Portfolio managers’ profiles	5
Other notes	5
Portfolio of investments	6
Statement of assets and liabilities	18
Statement of operations	19
Statements of changes in net assets	20
Financial highlights	21
Notes to financial statements	23
Report of independent registered public accounting firm	35
Proxy voting policies and information	36
Quarterly portfolio disclosure	36
Further information	36
Information about fund contracts and legal claims	37
Contact information    back cover

NOT FDIC INSURED • MAY LOSE VALUE • NO BANK GUARANTEE

LETTER FROM THE EXECUTIVE CHAIRMAN

Dear Shareholders:

Despite the United Kingdom’s decision to leave the European Union and policy uncertainty accompanying a new presidential administration in the United States, most

markets have proved resilient. U.S. share prices have reached new highs, and U.S. bond yields rose on hopes surrounding President Trump’s proposed fiscal policies and indications that the U.S. Federal Reserve will continue to gradually hike interest rates. However, interest rates in most developed markets remain very low, with central banks maintaining accommodative monetary policies in hopes of reinvigorating slow-growing economies and lifting inflation.

Globally, economic growth has shown signs of recovery, led by China, the U.S. and the eurozone. Despite better growth, there are few immediate signs of worrisome inflation. Emerging market

economies are recovering at a somewhat slower pace amid fears that restrictive U.S. trade policies could further hamper the restrained pace of global trade growth. Looking ahead, markets will have to contend with a series of European elections during 2017, as well as geopolitical hot spots on the Korean peninsula and in the Middle East.

At MFS®, we believe time is an asset. A patient, long-term approach to investing can have a powerful impact on decision making and outcomes. Time arbitrage, as we call it, simply comes down to having the conviction and discipline to allow enough time for good investment ideas to play out. In our view, such an approach, along with the professional guidance of a financial advisor, will help you reach your investment objectives.

Respectfully,

Robert J. Manning

Executive Chairman

MFS Investment Management

June 16, 2017

The opinions expressed in this letter are subject to change and may not be relied upon for investment advice. No forecasts can be guaranteed.

1

PORTFOLIO COMPOSITION

Portfolio structure at value

Fixed income sectors (i)
Investment Grade Corporates	45.8%
U.S. Treasury Securities	32.5%
Non-U.S. Government Bonds	14.5%
Asset-Backed Securities	5.0%
Emerging Markets Bonds	3.7%
Mortgage-Backed Securities	1.5%
High Yield Corporates	1.5%
U.S. Government Agencies	0.8%
Collateralized Debt Obligations	0.8%
Residential Mortgage-Backed Securities	0.7%
Commercial Mortgage-Backed Securities	0.3%

Portfolio structure reflecting equivalent exposure of derivative positions (i)

Composition including fixed income credit quality (a)(i)
AAA	10.1%
AA	8.0%
A	16.0%
BBB	36.4%
BB	1.5%
CC (o)	0.0%
U.S. Government	20.2%
Federal Agencies	2.3%
Not Rated	12.6%
Cash & Cash Equivalents	5.5%
Other	(12.6)%
Portfolio facts (i)
Average Duration (d)	4.0
Average Effective Maturity (m)	4.3 yrs.

2

Portfolio Composition – continued

Issuer country weightings (i)(x)
United States	68.1%
United Kingdom	5.9%
Italy	4.1%
Switzerland	3.0%
Canada	2.5%
Belgium	1.8%
Germany	1.8%
Spain	1.7%
Australia	1.6%
Other Countries	9.5%

(a) For all securities other than those specifically described below, ratings are assigned to underlying securities utilizing ratings from Moody’s, Fitch, and Standard & Poor’s rating agencies and applying the following hierarchy: If all three agencies provide a rating, the middle rating (after dropping the highest and lowest ratings) is assigned; if two of the three agencies rate a security, the lower of the two is assigned. Ratings are shown in the S&P and Fitch scale (e.g., AAA). Securities rated BBB or higher are considered investment grade. All ratings are subject to change. U.S. Government includes securities issued by the U.S. Department of the Treasury. Federal Agencies includes rated and unrated U.S. Agency fixed-income securities, U.S. Agency mortgage-backed securities, and collateralized mortgage obligations of U.S. Agency mortgage-backed securities. Not Rated includes fixed income securities, including fixed income futures contracts, which have not been rated by any rating agency. The fund may or may not have held all of these instruments on this date. The fund is not rated by these agencies.

(d) Duration is a measure of how much a bond’s price is likely to fluctuate with general changes in interest rates, e.g., if rates rise 1.00%, a bond with a 5-year duration is likely to lose about 5.00% of its value due to the interest rate move.

(i) For purposes of this presentation, the components include the value of securities, and reflect the impact of the equivalent exposure of derivative positions, if any. These amounts may be negative from time to time. Equivalent exposure is a calculated amount that translates the derivative position into a reasonable approximation of the amount of the underlying asset that the portfolio would have to hold at a given point in time to have the same price sensitivity that results from the portfolio’s ownership of the derivative contract. When dealing with derivatives, equivalent exposure is a more representative measure of the potential impact of a position on portfolio performance than value. The bond component will include any accrued interest amounts.

(m) In determining an instrument’s effective maturity for purposes of calculating the fund’s dollar-weighted average effective maturity, MFS uses the instrument’s stated maturity or, if applicable, an earlier date on which MFS believes it is probable that a maturity-shortening device (such as a put, pre-refunding or prepayment) will cause the instrument to be repaid. Such an earlier date can be substantially shorter than the instrument’s stated maturity.

(o) Less than 0.1%.

(x) Represents the portfolio’s exposure to issuer countries as a percentage of a portfolio’s net assets. For purposes of this presentation, United States includes Cash & Cash Equivalents and Other.

3

Portfolio Composition – continued

Where the fund holds convertible bonds, these are treated as part of the equity portion of the portfolio.

Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. Please see the Statement of Assets and Liabilities for additional information related to the fund’s cash position and other assets and liabilities.

Other includes equivalent exposure from currency derivatives and/or any offsets to derivative positions and may be negative.

Percentages are based on net assets as of 4/30/17.

The portfolio is actively managed and current holdings may be different.

4

PORTFOLIO MANAGERS’ PROFILES

Portfolio Manager	Primary Role	Since	Title and Five Year History
Geoffrey Schechter	Lead Portfolio Manager	2017	Investment Officer of MFS; employed in the investment management area of MFS since 1993.
Alexander Mackey	Investment Grade Debt Instruments Portfolio Manager	2017	Investment Officer of MFS: employed in the investment management area of MFS since 2001.
Erik Weisman	Sovereign Debt Instruments Portfolio Manager	2004	Investment Officer of MFS; employed in the investment management area of MFS since 2002.

Note to Shareholders: Effective February 1, 2017, James Calmas is no longer a Portfolio Manager of the Fund. Effective February 1, 2017, Alexander Mackey and Geoffrey Schechter became Portfolio Managers of the Fund.

OTHER NOTES

The fund’s shares may trade at a discount or premium to net asset value. When fund shares trade at a premium, buyers pay more than the net asset value underlying fund shares, and shares purchased at a premium would receive less than the amount paid for them in the event of the fund’s concurrent liquidation.

The fund’s monthly distributions may include a return of capital to shareholders to the extent that the fund’s net investment income and net capital gains, determined in accordance with federal income tax regulations, are insufficient to meet the fund’s target annual distribution rate. Distributions that are treated for federal income tax purposes as a return of capital will reduce each shareholder’s basis in his or her shares and, to the extent the return of capital exceeds such basis, will be treated as gain to the shareholder from a sale of shares. It may also result in a recharacterization of what economically represents a return of capital to ordinary income in those situations where a fund has long term capital gains and a capital loss carryforward. Returns of shareholder capital may have the effect of reducing the fund’s assets and increasing the fund’s expense ratio.

The fund’s target annual distribution rate is calculated based on an annual rate of 8.5% of the fund’s average monthly net asset value, not a fixed share price, and the fund’s dividend amount will fluctuate with changes in the fund’s average monthly net assets.

In accordance with Section 23(c) of the Investment Company Act of 1940, the fund hereby gives notice that it may from time to time repurchase shares of the fund in the open market at the option of the Board of Trustees and on such terms as the Trustees shall determine.

5

PORTFOLIO OF INVESTMENTS

4/30/17 (unaudited)

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

Bonds - 94.1%
Issuer	Shares/Par		Value ($)
Asset-Backed & Securitized - 6.7%
AmeriCredit Automobile Receivables Trust, 2015-3, “A2A”, 1.07%, 1/08/2019	$	62,913	$	62,915
ARI Fleet Lease Trust, 2016-A, “A2”, 1.82%, 7/15/2024 (n)		313,274		313,015
Babson CLO Ltd., 2013-IIA, “BR”, FRN, 3.408%, 1/18/2025 (n)		2,166,331		2,171,465
Capital One Multi-Asset Execution Trust, 2016-A4, “A4”, 1.33%, 6/15/2022		2,880,000		2,854,788
Chesapeake Funding II LLC, 2016-1A, “A2”, FRN, 2.062%, 3/15/2028 (n)		1,386,547		1,393,188
Colony Starwood Homes, 2016-2A, “A”, FRN, 2.243%, 12/17/2033 (n)		1,895,654		1,908,371
Credit Acceptance Auto Loan Trust, 2015-2A, “A”, 2.4%, 2/15/2023 (n)		2,126,000		2,136,743
Credit Suisse Commercial Mortgage Trust, “A4”, FRN, 6.138%, 9/15/2039		530,858		532,340
Credit Suisse Mortgage Capital Certificate, 5.695%, 9/15/2040		817,501		819,879
CWCapital Cobalt Ltd., “A4”, FRN, 5.99%, 5/15/2046		70,217		70,163
Drive Auto Receivables Trust, 2016-CA, “A3”, 1.67%, 11/15/2019 (n)		2,030,000		2,030,780
Drive Auto Receivables Trust, 2017-AA, “A3”, 1.77%, 1/15/2020 (n)		1,040,000		1,041,128
Dryden Senior Loan Fund, 2014-34A, “CR”, FRN, 3.171%, 10/15/2026 (n)		824,972		824,368
Enterprise Fleet Financing LLC, 2017-1, “A2”, 2.13%, 7/20/2022 (n)		850,000		849,571
Exeter Automobile Receivables Trust, 2015-2A, “A”, 1.54%, 11/15/2019 (n)		346,530		346,351
Exeter Automobile Receivables Trust, 2017-1A, “A”, 1.96%, 3/15/2021 (n)		795,226		794,090
Falcon Franchise Loan LLC, FRN, 7.583%, 1/05/2023 (i)(z)		204,143		8,281
Flagship Credit Auto Trust, 2016-1, “A”, 2.77%, 12/15/2020 (n)		270,086		272,055
Ford Credit Auto Owner Trust, 2014-1, “A”, 2.26%, 11/15/2025 (n)		339,000		342,254
Ford Credit Auto Owner Trust, 2014-2, “A”, 2.31%, 4/15/2026 (n)		1,247,000		1,259,243
Ford Credit Floorplan Master Owner Trust, 2015-1, “A2”, FRN, 1.393%, 1/15/2020		2,470,000		2,473,390
GE Dealer Floorplan Master Note Trust, 2014-1, “A”, FRN, 1.372%, 7/20/2019		2,270,000		2,270,866
GMF Floorplan Owner Revolving Trust, 2017-A1, “A”, 2.22%, 1/18/2022 (n)		1,290,000		1,295,212

6

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Bonds - continued
Asset-Backed & Securitized - continued
GO Financial Auto Securitization Trust, 2015-2, “A”, 3.27%, 11/15/2018 (n)	$	134,880	$	134,949
Hertz Fleet Lease Funding LP, 2016-1, “A2”, 1.96%, 4/10/2030 (n)		1,030,000		1,033,629
Loomis, Sayles & Co., CLO, “A1”, FRN, 2.688%, 10/15/2027 (z)		1,117,883		1,123,303
Mercedes-Benz Master Owner Trust, 2016-AA, “A”, FRN, 1.573%, 5/15/2020 (n)		1,800,000		1,806,984
Nextgear Floorplan Master Owner Trust, 2015-1A, “A”, 1.8%, 7/15/2019 (n)		1,301,000		1,301,757
Sierra Receivables Funding Co. LLC, 2015-1A, “A”, 2.4%, 3/22/2032 (n)		655,307		657,113
SPS Servicer Advance Receivables Trust, 2016-T1, “AT1”, 2.53%, 11/16/2048 (n)		2,360,000		2,354,551
Sway Residential Trust, 2014-1, “A”, FRN, 2.293%, 1/17/2032 (n)		776,625		780,067
Tricon American Homes 2015-SFR1, Trust “1A”, FRN, 2.589%, 11/17/2033 (n)		1,300,000		1,279,857
			$	36,542,666
Automotive - 0.7%
General Motors Financial Co., 3.95%, 4/13/2024	$	4,000,000	$	4,025,600
Broadcasting - 0.3%
Time Warner, Inc., 3.8%, 2/15/2027	$	1,406,000	$	1,399,822
Brokerage & Asset Managers - 0.4%
Intercontinental Exchange, Inc., 2.75%, 12/01/2020	$	2,388,000	$	2,428,326
Business Services - 0.7%
Fidelity National Information Services, Inc., 2.85%, 10/15/2018	$	665,000	$	673,630
Fidelity National Information Services, Inc., 5%, 10/15/2025		2,700,000		2,978,786
			$	3,652,416
Cable TV - 1.3%
Charter Communications Operating LLC/Charter Communications Operating Capital Corp., 4.908%, 7/23/2025	$	1,350,000	$	1,446,857
Cox Communications, Inc., 3.25%, 12/15/2022 (n)		2,925,000		2,888,946
Time Warner Cable, Inc., 4%, 9/01/2021		2,770,000		2,892,273
			$	7,228,076
Chemicals - 0.6%
Dow Chemical Co., 8.55%, 5/15/2019	$	2,490,000	$	2,808,907
LyondellBasell Industries N.V., 5%, 4/15/2019		336,000		352,938
			$	3,161,845

7

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Bonds - continued
Computer Software - 0.8%
Diamond 1 Finance Corp./Diamond 2 Finance Corp., 3.48%, 6/01/2019 (n)	$	1,140,000	$	1,165,990
Microsoft Corp., 3.125%, 11/03/2025		3,110,000		3,180,382
			$	4,346,372
Computer Software - Systems - 0.5%
Apple, Inc., 3.35%, 2/09/2027	$	2,700,000	$	2,761,547
Conglomerates - 0.2%
General Electric Capital Corp., 6%, 8/07/2019	$	338,000	$	370,111
Roper Technologies, Inc., 2.8%, 12/15/2021		651,000		654,546
			$	1,024,657
Consumer Products - 0.7%
Newell Rubbermaid, Inc., 2.875%, 12/01/2019	$	1,530,000	$	1,558,860
Reckitt Benckiser Treasury Services PLC, 3.625%, 9/21/2023 (n)		2,274,000		2,349,892
			$	3,908,752
Defense Electronics - 0.3%
BAE Systems Holdings, Inc., 6.375%, 6/01/2019 (n)	$	1,400,000	$	1,518,556
Electrical Equipment - 0.3%
Molex Electronic Technologies LLC, 2.878%, 4/15/2020 (n)	$	1,703,000	$	1,717,355
Emerging Market Quasi-Sovereign - 1.6%
Corporacion Financiera de Desarrollo S.A., 3.25%, 7/15/2019 (n)	$	1,337,000	$	1,360,398
Corporacion Financiera de Desarrollo S.A., 4.75%, 2/08/2022 (n)		228,000		243,162
Korea Gas Corp., 2.25%, 7/25/2017 (n)		1,630,000		1,632,086
Petroleos Mexicanos, 6%, 3/05/2020		2,970,000		3,197,205
Sinopec Capital (2013) Ltd., 3.125%, 4/24/2023 (n)		733,000		727,339
State Grid International Development Co. Ltd., 1.75%, 5/22/2018 (n)		1,330,000		1,326,002
			$	8,486,192
Emerging Market Sovereign - 0.4%
Republic of Poland, 5%, 3/23/2022	$	772,000	$	848,930
State of Qatar, 2.375%, 6/02/2021 (n)		1,105,000		1,098,923
			$	1,947,853
Energy - Integrated - 0.7%
BP Capital Markets PLC, 4.5%, 10/01/2020	$	853,000	$	917,520
BP Capital Markets PLC, 4.742%, 3/11/2021		1,810,000		1,974,062
Petro-Canada, 6.05%, 5/15/2018		904,000		942,783
			$	3,834,365

8

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Bonds - continued
Financial Institutions - 0.2%
GE Capital International Funding Co., 2.342%, 11/15/2020	$	984,000	$	990,447
Food & Beverages - 4.2%
Anheuser-Busch InBev Finance, Inc., 2.65%, 2/01/2021	$	6,000,000	$	6,073,656
Anheuser-Busch InBev Worldwide, Inc., 3.3%, 2/01/2023		2,308,000		2,371,119
Coca-Cola Bottling Co. Consolidated, 3.8%, 11/25/2025		3,120,000		3,209,023
Kerry Group Financial Services, 3.2%, 4/09/2023 (n)		2,850,000		2,837,845
Kraft Heinz Foods Co., 6.125%, 8/23/2018		2,380,000		2,508,977
Tyson Foods, Inc., 4.5%, 6/15/2022		1,447,000		1,547,490
Want Want China Finance Co., 1.875%, 5/14/2018 (n)		1,430,000		1,422,724
Wm. Wrigley Jr. Co., 2.4%, 10/21/2018 (n)		613,000		617,954
Wm. Wrigley Jr. Co., 3.375%, 10/21/2020 (n)		1,876,000		1,936,199
			$	22,524,987
Food & Drug Stores - 0.8%
CVS Health Corp., 3.875%, 7/20/2025	$	2,479,000	$	2,578,782
Walgreens Boots Alliance, Inc., 3.3%, 11/18/2021		1,522,000		1,567,069
			$	4,145,851
Insurance - 1.6%
American International Group, Inc., 3.75%, 7/10/2025	$	2,808,000	$	2,837,681
American International Group, Inc., 3.9%, 4/01/2026		1,350,000		1,376,699
Metropolitan Life Global Funding I, 2%, 4/14/2020 (n)		1,600,000		1,593,995
Unum Group, 4%, 3/15/2024		2,863,000		2,949,981
			$	8,758,356
Insurance - Health - 0.5%
UnitedHealth Group, Inc., 3.75%, 7/15/2025	$	2,800,000	$	2,944,869
Insurance - Property & Casualty - 2.5%
Allied World Assurance Co. Holdings Ltd., 4.35%, 10/29/2025	$	3,110,000	$	3,139,626
AXIS Capital Holdings Ltd., 5.875%, 6/01/2020		1,610,000		1,770,610
Liberty Mutual Group, Inc., 4.25%, 6/15/2023 (n)		4,000,000		4,257,692
Marsh & McLennan Cos., Inc., 2.35%, 9/10/2019		1,260,000		1,268,704
ZFS Finance USA Trust V, 6.5% to 5/09/2017, FRN to 5/09/2067 (n)		3,000,000		3,003,300
			$	13,439,932
International Market Quasi-Sovereign - 1.7%
Bank Nederlandse Gemeenten N.V., 1.375%, 3/19/2018 (n)	$	1,746,000	$	1,746,190
Dexia Credit Local S.A., 1.875%, 9/15/2021 (n)		2,510,000		2,433,314
Dexia Credit Local S.A., 2.25%, 1/30/2019 (n)		3,280,000		3,291,513
Electricite de France, 2.15%, 1/22/2019 (n)		1,784,000		1,787,666
			$	9,258,683

9

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Bonds - continued
International Market Sovereign - 12.6%
Commonwealth of Australia, 5.75%, 5/15/2021	AUD	3,836,000	$	3,292,209
Federal Republic of Germany, 3.25%, 7/04/2021	EUR	1,200,000		1,516,070
Federal Republic of Germany, 1.75%, 2/15/2024	EUR	4,050,000		4,983,195
Government of Canada, 4.25%, 6/01/2018	CAD	505,000		384,256
Government of Canada, 3.25%, 6/01/2021	CAD	1,579,000		1,264,160
Government of Canada, 2.5%, 6/01/2024	CAD	3,043,000		2,418,283
Government of Japan, 2.1%, 9/20/2024	JPY	320,000,000		3,335,722
Government of Norway, 3.75%, 5/25/2021	NOK	6,400,000		827,617
Kingdom of Belgium, 4.25%, 9/28/2021	EUR	404,000		530,064
Kingdom of Belgium, 2.6%, 6/22/2024	EUR	2,845,000		3,618,695
Kingdom of Denmark, 3%, 11/15/2021	DKK	4,447,000		748,582
Kingdom of Denmark, 1.5%, 11/15/2023	DKK	4,198,000		674,992
Kingdom of Spain, 5.5%, 7/30/2017	EUR	711,000		785,388
Kingdom of Spain, 4.6%, 7/30/2019	EUR	4,110,000		4,960,854
Kingdom of Spain, 5.4%, 1/31/2023	EUR	2,425,000		3,351,691
Kingdom of Sweden, 5%, 12/01/2020	SEK	6,500,000		875,586
Kingdom of Sweden, 3.5%, 6/01/2022	SEK	4,235,000		565,073
Kingdom of the Netherlands, 2%, 7/15/2024	EUR	1,251,000		1,553,711
Republic of Austria, 1.75%, 10/20/2023	EUR	210,000		254,770
Republic of France, 2.5%, 10/25/2020	EUR	1,500,000		1,800,384
Republic of Italy, 5.25%, 8/01/2017	EUR	11,388,000		12,578,490
Republic of Italy, 3.75%, 3/01/2021	EUR	2,600,000		3,177,665
Republic of Italy, 5.5%, 9/01/2022	EUR	2,969,000		3,965,491
United Kingdom Treasury, 8%, 6/07/2021	GBP	2,500,000		4,265,836
United Kingdom Treasury, 2.25%, 9/07/2023	GBP	4,750,000		6,779,474
			$	68,508,258
Internet - 0.3%
Baidu, Inc., 2.75%, 6/09/2019	$	1,510,000	$	1,523,179
Major Banks - 11.4%
Bank of America Corp., 6.875%, 4/25/2018	$	1,000,000	$	1,049,260
Bank of America Corp., 2.151%, 11/09/2020		750,000		744,848
Bank of America Corp., 3.124% to 1/20/2022, FRN to 1/20/2023		5,400,000		5,456,376
Bank of America Corp., 4.125%, 1/22/2024		2,876,000		3,022,547
Bank of America Corp., 4.183%, 11/25/2027		2,285,000		2,308,232
Barclays PLC, 3.25%, 1/12/2021		3,848,000		3,905,874
Commonwealth Bank of Australia, 5%, 10/15/2019 (n)		2,560,000		2,733,197
Credit Suisse Group AG, 6.5%, 8/08/2023 (n)		915,000		1,018,887
Credit Suisse Group AG, “A”, 3.574%, 1/09/2023 (n)		1,500,000		1,518,033
Goldman Sachs Group, Inc., 2%, 4/25/2019		260,000		259,809
Goldman Sachs Group, Inc., 5.75%, 1/24/2022		1,924,000		2,170,690

10

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Bonds - continued
Major Banks - continued
Goldman Sachs Group, Inc., 3%, 4/26/2022	$	1,720,000	$	1,733,677
HSBC Holdings PLC, 3.262% to 3/13/2022, FRN to 3/13/2023		4,000,000		4,047,592
ING Bank N.V., 5.8%, 9/25/2023 (n)		2,912,000		3,259,291
JPMorgan Chase & Co., 2.2%, 10/22/2019		2,090,000		2,099,050
JPMorgan Chase & Co., 4.625%, 5/10/2021		2,890,000		3,128,376
Lloyds Bank PLC, 3.75%, 1/11/2027		1,400,000		1,396,592
Mitsubishi UFJ Financial Group, Inc., 2.95%, 3/01/2021		1,140,000		1,156,563
Morgan Stanley, 6.625%, 4/01/2018		1,532,000		1,599,344
Morgan Stanley, 5.625%, 9/23/2019		640,000		691,105
Morgan Stanley, 3.7%, 10/23/2024		1,816,000		1,860,129
Morgan Stanley, 3.875%, 1/27/2026		5,400,000		5,520,814
Morgan Stanley, FRN, 1.893%, 7/23/2019		1,070,000		1,075,208
Skandinaviska Enskilda Banken AB, 2.45%, 5/27/2020 (n)		1,810,000		1,819,687
Sumitomo Mitsui Financial Group, Inc., 3.01%, 10/19/2026		1,505,000		1,466,860
UBS Group Funding (Jersey) Ltd., 3%, 4/15/2021 (n)		2,505,000		2,522,127
UBS Group Funding (Jersey) Ltd., FRN, 2.596%, 9/24/2020 (n)		1,680,000		1,713,786
UBS Group Funding (Switzerland) AG, 4.253%, 3/23/2028 (n)		2,449,000		2,523,068
			$	61,801,022
Medical & Health Technology & Services - 0.4%
Laboratory Corp. of America Holdings, 2.625%, 2/01/2020	$	2,120,000	$	2,135,086
Medical Equipment - 0.4%
Abbott Laboratories, 3.4%, 11/30/2023	$	2,285,000	$	2,318,350
Metals & Mining - 1.7%
Barrick Gold Corp., 4.1%, 5/01/2023	$	857,000	$	931,866
Freeport-McMoRan, Inc., 2.375%, 3/15/2018		1,090,000		1,084,550
Freeport-McMoRan, Inc., 3.1%, 3/15/2020		1,740,000		1,716,075
Glencore Funding LLC, 2.125%, 4/16/2018 (n)		1,270,000		1,269,632
Glencore Funding LLC, 4.125%, 5/30/2023 (n)		1,518,000		1,559,608
Glencore Funding LLC, 4%, 4/16/2025 (n)		880,000		881,742
Kinross Gold Corp., 5.95%, 3/15/2024		1,897,000		2,033,963
			$	9,477,436
Midstream - 1.6%
APT Pipelines Ltd., 4.2%, 3/23/2025 (n)	$	2,246,000	$	2,310,249
APT Pipelines Ltd., 4.25%, 7/15/2027 (n)		364,000		372,302
Enbridge, Inc., 4.25%, 12/01/2026		2,700,000		2,815,536
Kinder Morgan Energy Partners LP, 3.5%, 3/01/2021		1,854,000		1,895,543
Spectra Energy Capital LLC, 8%, 10/01/2019		1,299,000		1,457,362
			$	8,850,992

11

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Bonds - continued
Mortgage-Backed - 1.6%
Fannie Mae, 5.5%, 9/01/2017 - 4/01/2025	$	318,761	$	351,017
Fannie Mae, 4.5%, 3/01/2019		297,439		305,277
Fannie Mae, 5%, 5/01/2019 - 12/01/2020		70,562		72,586
Fannie Mae, 6.5%, 11/01/2031		976,735		1,126,570
Fannie Mae, FRN, 1.07%, 12/25/2017		179,351		179,330
Fannie Mae, FRN, 1.34%, 5/25/2018		1,162,773		1,163,031
Freddie Mac, 6%, 8/01/2017 - 8/01/2034		49,238		52,820
Freddie Mac, 5.5%, 9/01/2017 - 6/01/2020		353,587		366,593
Freddie Mac, 3.882%, 11/25/2017		1,423,992		1,433,491
Freddie Mac, 5%, 6/01/2019		172,523		177,130
Freddie Mac, 4.224%, 3/25/2020		2,249,154		2,388,788
Ginnie Mae, 6%, 6/15/2033 - 10/15/2036		653,946		753,870
Ginnie Mae, 6.157%, 4/20/2058		47,678		52,714
			$	8,423,217
Network & Telecom - 1.8%
AT&T, Inc., 3.4%, 5/15/2025	$	5,400,000	$	5,258,660
AT&T, Inc., FRN, 1.962%, 11/27/2018		2,940,000		2,965,369
British Telecommunications PLC, 2.35%, 2/14/2019		1,330,000		1,339,815
			$	9,563,844
Oils - 0.6%
Marathon Petroleum Corp., 3.625%, 9/15/2024	$	1,003,000	$	999,346
Valero Energy Corp., 3.4%, 9/15/2026		2,353,000		2,278,864
			$	3,278,210
Other Banks & Diversified Financials - 2.4%
Citizens Bank N.A., 2.5%, 3/14/2019	$	1,000,000	$	1,008,452
Citizens Bank N.A., 2.55%, 5/13/2021		910,000		910,222
Discover Bank, 3.1%, 6/04/2020		1,152,000		1,176,939
First Republic Bank, 2.375%, 6/17/2019		578,000		579,318
Groupe BPCE S.A., 12.5% to 9/30/2019, FRN to 8/29/2049 (n)		2,556,000		3,079,980
Lloyds Bank PLC, 2.3%, 11/27/2018		780,000		785,002
Lloyds Bank PLC, 5.8%, 1/13/2020 (n)		2,080,000		2,273,101
SunTrust Banks, Inc., 2.7%, 1/27/2022		1,803,000		1,806,370
SunTrust Banks, Inc., 3.3%, 5/15/2026		1,473,000		1,442,876
			$	13,062,260
Personal Computers & Peripherals - 0.1%
Equifax, Inc., 2.3%, 6/01/2021	$	759,000	$	752,989
Pharmaceuticals - 3.3%
Actavis Funding SCS, 3%, 3/12/2020	$	3,625,000	$	3,696,086
Actavis Funding SCS, 3.45%, 3/15/2022		3,000,000		3,083,967

12

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Bonds - continued
Pharmaceuticals - continued
Biogen, Inc., 2.9%, 9/15/2020	$	1,420,000	$	1,449,036
Celgene Corp., 2.125%, 8/15/2018		2,220,000		2,228,862
Gilead Sciences, Inc., 3.65%, 3/01/2026		3,740,000		3,804,661
Mylan N.V., 2.5%, 6/07/2019		940,000		944,526
Shire Acquisitions Investments Ireland Designated Activity Co., 2.875%, 9/23/2023		3,000,000		2,941,422
			$	18,148,560
Real Estate - Retail - 0.1%
Kimco Realty Corp., REIT, 6.875%, 10/01/2019	$	690,000	$	766,353
Specialty Chemicals - 0.2%
Airgas, Inc., 3.05%, 8/01/2020	$	870,000	$	893,570
Supranational - 0.9%
Banco Latinoamericano de Comercio Exterior S.A., 3.25%, 5/07/2020 (n)	$	1,900,000	$	1,933,250
Corporacion Andina de Fomento, 4.375%, 6/15/2022		2,950,000		3,174,584
			$	5,107,834
Telecommunications - Wireless - 1.0%
American Tower Trust I, REIT, 1.551%, 3/15/2018 (n)	$	1,540,000	$	1,536,786
Rogers Communications, Inc., 6.8%, 8/15/2018		1,490,000		1,583,676
SBA Tower Trust, 2.877%, 7/15/2021 (n)		586,000		585,502
SBA Tower Trust, 2.898%, 10/15/2044 (n)		1,920,000		1,931,133
			$	5,637,097
Telephone Services - 0.2%
Qwest Corp., 6.5%, 6/01/2017	$	1,200,000	$	1,204,788
Tobacco - 0.7%
Reynolds American, Inc., 8.125%, 6/23/2019	$	1,316,000	$	1,477,086
Reynolds American, Inc., 6.875%, 5/01/2020		1,340,000		1,514,276
Reynolds American, Inc., 3.25%, 6/12/2020		614,000		632,724
			$	3,624,086
Transportation - Services - 0.5%
TTX Co., 2.6%, 6/15/2020 (n)	$	2,450,000	$	2,459,447
U.S. Government Agencies and Equivalents - 0.8%
AID-Ukraine, 1.847%, 5/29/2020	$	2,500,000	$	2,504,448
Small Business Administration, 6.35%, 4/01/2021		107,311		113,311
Small Business Administration, 6.34%, 5/01/2021		108,890		115,054
Small Business Administration, 6.44%, 6/01/2021		114,766		121,717

13

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Bonds - continued
U.S. Government Agencies and Equivalents - continued
Small Business Administration, 6.625%, 7/01/2021	$	137,972	$	147,018
Small Business Administration, 5.34%, 11/01/2021		383,358		400,315
Small Business Administration, 4.93%, 1/01/2024		207,597		219,680
Small Business Administration, 5.36%, 11/01/2025		321,352		343,771
Small Business Administration, 5.39%, 12/01/2025		245,200		262,356
			$	4,227,670
U.S. Treasury Obligations - 20.2%
U.S. Treasury Notes, 0.75%, 4/30/2018	$	90,000,000	$	89,648,460
U.S. Treasury Notes, 1.75%, 2/28/2022		3,210,000		3,199,969
U.S. Treasury Notes, 1.625%, 5/15/2026 (f)		17,420,000		16,505,450
			$	109,353,879
Utilities - Electric Power - 3.6%
Dominion Resources, Inc., 3.9%, 10/01/2025	$	2,641,000	$	2,719,108
E.ON International Finance B.V., 5.8%, 4/30/2018 (n)		3,000,000		3,109,260
Emera U.S. Finance LP, 2.15%, 6/15/2019		670,000		670,131
Enel Americas S.A., 4%, 10/25/2026		252,000		250,425
Enel Finance International S.A., 6.25%, 9/15/2017 (n)		2,240,000		2,278,015
Eversource Energy, 2.5%, 3/15/2021		1,000,000		997,520
Exelon Corp., 3.497%, 6/01/2022		2,365,000		2,411,813
Great Plains Energy, Inc., 3.15%, 4/01/2022		927,000		938,246
NextEra Energy Capital Holdings, Inc., 2.3%, 4/01/2019		1,714,000		1,725,755
Oncor Electric Delivery Co., 4.1%, 6/01/2022		2,206,000		2,351,517
PPL WEM Holdings PLC, 5.375%, 5/01/2021 (n)		546,000		592,292
Transelec S.A., 4.625%, 7/26/2023 (n)		927,000		980,656
Transelec S.A., 4.25%, 1/14/2025 (n)		228,000		235,209
			$	19,259,947
Total Bonds (Identified Cost, $510,856,028)			$	510,425,599
Short-Term Obligations (y) - 0.9%
Bank of Nova Scotia, 1.44%, due 9/01/17 (Identified Cost, $5,001,000)	$	5,000,000	$	5,005,568
Money Market Funds - 4.0%
MFS Institutional Money Market Portfolio, 0.78% (v) (Identified Cost, $21,437,486)		21,439,629	$	21,439,629
Total Investments (Identified Cost, $537,294,514)			$	536,870,796
Other Assets, Less Liabilities - 1.0%				5,532,674
Net Assets - 100.0%			$	542,403,470

14

Portfolio of Investments (unaudited) – continued

(f) All or a portion of the security has been segregated as collateral for open futures contracts.

(i) Interest only security for which the fund receives interest on notional principal (Par amount). Par amount shown is the notional principal and does not reflect the cost of the security.

(n) Securities exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be sold in the ordinary course of business in transactions exempt from registration, normally to qualified institutional buyers. At period end, the aggregate value of these securities was $111,780,022 representing 20.6% of net assets.

(v) Underlying affiliated fund that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.

(y) The rate shown represents an annualized yield at time of purchase.

(z) Restricted securities are not registered under the Securities Act of 1933 and are subject to legal restrictions on resale. These securities generally may be resold in transactions exempt from registration or to the public if the securities are subsequently registered. Disposal of these securities may involve time-consuming negotiations and prompt sale at an acceptable price may be difficult. The fund holds the following restricted securities:

Restricted Securities	Acquisition Date	Cost		Value
Falcon Franchise Loan LLC, FRN, 7.583%, 1/05/2023	1/18/02		$29,880		$8,281
Loomis, Sayles & Co., CLO, “A1”, FRN, 2.688%, 10/15/2027	6/27/16		1,112,647		1,123,303
Total Restricted Securities					$1,131,584
% of Net assets					0.2%

The following abbreviations are used in this report and are defined:

CLO Collateralized Loan Obligation

FRN Floating Rate Note. Interest rate resets periodically and the current rate may not be the rate reported at period end.

PLC Public Limited Company

REIT Real Estate Investment Trust

Abbreviations indicate amounts shown in currencies other than the U.S. dollar. All amounts are stated in U.S. dollars unless otherwise indicated. A list of abbreviations is shown below:

AUD Australian Dollar

CAD Canadian Dollar

DKK Danish Krone

EUR Euro

GBP British Pound

JPY Japanese Yen

NOK Norwegian Krone

NZD New Zealand Dollar

SEK Swedish Krona

15

Portfolio of Investments (unaudited) – continued

Derivative Contracts at 4/30/17

Forward Foreign Currency Exchange Contracts at 4/30/17

Type	Currency	Counter- party	Contracts to Deliver/ Receive		Settlement Date Range		In Exchange For		Contracts at Value		Net Unrealized Appreciation (Depreciation)
Asset Derivatives
SELL	AUD	Westpac Banking Corp.		4,469,012		6/09/17		$3,380,473		$3,344,126		$36,347
SELL	CAD	Citibank N.A.		5,639,614		6/09/17		4,208,934		4,133,696		75,238
SELL	NOK	Deutsche Bank AG		7,569,996		6/09/17		894,303		882,053		12,250
SELL	NZD	JPMorgan Chase Bank N.A.		56,234		6/09/17		39,056		38,573		483
												$124,318
Liability Derivatives
SELL	DKK	Goldman Sachs International		9,466,576		6/09/17		$1,352,008		$1,389,049		$(37,041	)
SELL	EUR	JPMorgan Chase Bank N.A.		17,267,682		6/09/17		18,340,350		18,843,544		(503,194	)
SELL	EUR	Morgan Stanley Capital Services, Inc.		24,603,977		5/19/17		26,162,639		26,821,697		(659,058	)
SELL	GBP	Barclays Bank PLC		9,405,477		6/09/17		11,507,667		12,194,327		(686,660	)
SELL	JPY	Goldman Sachs International		305,140,293		6/09/17		2,687,727		2,741,257		(53,530	)
SELL	SEK	Goldman Sachs International		11,649,976		6/09/17		1,299,512		1,317,760		(18,248	)
												$(1,957,731	)

16

Portfolio of Investments (unaudited) – continued

Futures Contracts at 4/30/17

Description	Currency		Contracts		Value	Expiration Date		Unrealized Appreciation (Depreciation)
Asset Derivatives
Interest Rate Futures
U.S. Treasury Note 5 yr (Long)		USD		155	$18,352,969		June - 2017		$91,606
U.S. Treasury Note 10 yr (Long)		USD		383	48,150,281		June - 2017		477,360
									$568,966

At April 30, 2017, the fund had cash collateral of $1,767,000 and other liquid securities with an aggregate value of $784,000 to cover any commitments for certain derivative contracts. Cash collateral is comprised of “Restricted Cash” on the Statement of Assets and Liabilities.

See Notes to Financial Statements

17

Financial Statements

STATEMENT OF ASSETS AND LIABILITIES

At 4/30/17 (unaudited)

This statement represents your fund’s balance sheet, which details the assets and liabilities comprising the total value of the fund.

Assets
Investments
Non-affiliated issuers, at value (identified cost, $515,857,028)	$515,431,167
Underlying affiliated funds, at value (identified cost, $21,437,486)	21,439,629
Total investments, at value (identified cost, $537,294,514)	$536,870,796
Cash	44,883
Restricted cash	1,767,000
Receivables for
Forward foreign currency exchange contracts	124,318
Daily variation margin on open futures contracts	32,346
Investments sold	1,570,159
Interest	4,235,101
Other assets	79,110
Total assets	$544,723,713
Liabilities
Payables for
Distributions	$142,865
Forward foreign currency exchange contracts	1,957,731
Payable to affiliates
Investment adviser	30,223
Transfer agent and dividend disbursing costs	2,878
Payable for independent Trustees’ compensation	40,913
Accrued expenses and other liabilities	145,633
Total liabilities	$2,320,243
Net assets	$542,403,470
Net assets consist of
Paid-in capital	$565,093,437
Unrealized appreciation (depreciation) on investments and translation of assets and liabilities in foreign currencies	(1,678,116	)
Accumulated net realized gain (loss) on investments and foreign currency	(514,474	)
Accumulated distributions in excess of net investment income	(20,497,377	)
Net assets	$542,403,470
Shares of beneficial interest outstanding	117,732,674
Net asset value per share (net assets of $542,403,470 / 117,732,674 shares of beneficial interest outstanding)	$4.61

See Notes to Financial Statements

18

Financial Statements

STATEMENT OF OPERATIONS

Six months ended 4/30/17 (unaudited)

This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations.

Net investment income
Income
Interest	$7,341,839
Dividends from underlying affiliated funds	62,958
Other	7,656
Foreign taxes withheld	(24	)
Total investment income	$7,412,429
Expenses
Management fee	$1,333,677
Transfer agent and dividend disbursing costs	52,714
Administrative services fee	47,427
Independent Trustees’ compensation	57,374
Stock exchange fee	56,657
Custodian fee	22,125
Reimbursement of custodian expenses	(99,859	)
Shareholder communications	100,702
Audit and tax fees	39,262
Legal fees	6,788
Miscellaneous	20,513
Total expenses	$1,637,380
Net investment income	$5,775,049
Realized and unrealized gain (loss) on investments and foreign currency
Realized gain (loss) (identified cost basis)
Investments:
Non-affiliated issuers	$1,738,941
Underlying affiliated funds	(2,115	)
Futures contracts	(2,798,298	)
Foreign currency	4,694,059
Net realized gain (loss) on investments and foreign currency	$3,632,587
Change in unrealized appreciation (depreciation)
Investments	$(5,921,515	)
Futures contracts	1,351,743
Translation of assets and liabilities in foreign currencies	(4,252,306	)
Net unrealized gain (loss) on investments and foreign currency translation	$(8,822,078	)
Net realized and unrealized gain (loss) on investments and foreign currency	$(5,189,491	)
Change in net assets from operations	$585,558

See Notes to Financial Statements

19

Financial Statements

STATEMENTS OF CHANGES IN NET ASSETS

These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.

Change in net assets	Six months ended 4/30/17 (unaudited)			Year ended 10/31/16
From operations
Net investment income		$5,775,049			$12,561,201
Net realized gain (loss) on investments and foreign currency		3,632,587			(1,119,108	)
Net unrealized gain (loss) on investments and foreign currency translation		(8,822,078	)		8,944,282
Change in net assets from operations		$585,558			$20,386,375
Distributions declared to shareholders
From net investment income		$(7,093,377	)		$(9,585,719	)
From tax return of capital		—			(39,950,442	)
From other sources		(16,404,893	)		—
Total distributions declared to shareholders		$(23,498,270	)		$(49,536,161	)
Change in net assets from fund share transactions		$—			$(26,196	)
Total change in net assets		$(22,912,712	)		$(29,175,982	)
Net assets
At beginning of period		565,316,182			594,492,164
At end of period (including accumulated distributions in excess of net investment income of $20,497,377 and $2,774,156, respectively)		$542,403,470			$565,316,182

See Notes to Financial Statements

20

Financial Statements

FINANCIAL HIGHLIGHTS

The financial highlights table is intended to help you understand the fund’s financial performance for the semiannual period and the past 5 fiscal years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.

	Six months ended 4/30/17 (unaudited)			Years ended 10/31
				2016			2015			2014			2013			2012
Net asset value, beginning of period		$4.80			$5.05			$5.44			$5.76			$6.25			$6.37
Income (loss) from investment operations
Net investment income (d)		$0.05	(c)		$0.11			$0.12			$0.15			$0.18			$0.21
Net realized and unrealized gain (loss) on investments and foreign currency		(0.04	)		0.06			(0.06	)		0.01			(0.16	)		0.20
Total from investment operations		$0.01			$0.17			$0.06			$0.16			$0.02			$0.41
Less distributions declared to shareholders
From net investment income		$(0.06	)		$(0.08	)		$(0.25	)		$(0.21	)		$(0.18	)		$(0.30	)
From tax return of capital		—			(0.34	)		(0.20	)		(0.27	)		(0.33	)		(0.23	)
From other sources		(0.14	)		—			—			—			—			—
Total distributions declared to shareholders		$(0.20	)		$(0.42	)		$(0.45	)		$(0.48	)		$(0.51	)		$(0.53	)
Net increase from repurchase of capital shares		$—			$0.00	(w)		$0.00	(w)		$—			$—			$—
Net asset value, end of period (x)		$4.61			$4.80			$5.05			$5.44			$5.76			$6.25
Market value, end of period		$4.37			$4.45			$4.56			$5.05			$5.28			$6.53
Total return at market value (%)		2.78	(n)		6.93			(0.82	)		4.78			(11.67	)		13.01
Total return at net asset value (%) (j)(r)(s)(x)		0.51	(c)(n)		4.15			1.96			3.47			0.67			6.80
Ratios (%) (to average net assets) and Supplemental data:
Expenses before expense reductions (f)		0.60	(a)(c)		0.64			0.64			0.65			0.68			0.71
Expenses after expense reductions (f)		N/A			N/A			N/A			0.65			0.68			0.71
Net investment income		2.12	(a)(c)		2.16			2.22			2.66			2.99			3.30
Portfolio turnover		36	(n)		19			31			25			30			29
Net assets at end of period (000 omitted)		$542,403			$565,316			$594,492			$641,942			$679,162			$735,110

21

Financial Highlights – continued

(a) Annualized.

(c) Amount reflects a one-time reimbursement of expenses by the custodian (or former custodian) without which net investment income and performance would be lower and expenses would be higher. See Note 2 in the Notes to Financial Statements for additional information.

(d) Per share data is based on average shares outstanding.

(f) Ratios do not reflect reductions from fees paid indirectly, if applicable.

(j) Total return at net asset value is calculated using the net asset value of the fund, not the publicly traded price and therefore may be different than the total return at market value.

(n) Not annualized.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(w) Per share amount was less than $0.01.

(x) The net asset values and total returns at net asset value have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting principles required at period end for financial reporting purposes.

See Notes to Financial Statements

22

NOTES TO FINANCIAL STATEMENTS

(unaudited)

(1) Business and Organization

MFS Intermediate Income Trust (the fund) is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as a diversified closed-end management investment company.

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services – Investment Companies.

(2) Significant Accounting Policies

General – The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. In the preparation of these financial statements, management has evaluated subsequent events occurring after the date of the fund’s Statement of Assets and Liabilities through the date that the financial statements were issued. The fund invests in foreign securities. Investments in foreign securities are vulnerable to the effects of changes in the relative values of the local currency and the U.S. dollar and to the effects of changes in each country’s legal, political, and economic environment.

In October 2016, the Securities and Exchange Commission (SEC) released its Final Rule on Investment Company Reporting Modernization (the “Rule”). The Rule, which introduces two new regulatory reporting forms for investment companies – Form N-PORT and Form N-CEN – also contains amendments to Regulation S-X which impact financial statement presentation, particularly the presentation of derivative investments. Although still evaluating the impacts of the Rule, management believes that many of the Regulation S-X amendments are consistent with the fund’s current financial statement presentation and expects that the fund will be able to comply with the Rule’s Regulation S-X amendments by the August 1, 2017 compliance date.

In March 2017, FASB issued Accounting Standards Update 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20) – Premium Amortization on Purchased Callable Debt Securities (“ASU 2017-08”). For entities that hold callable debt securities at a premium, ASU 2017-08 requires that the premium be amortized to the earliest call date. ASU 2017-08 will be effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Management is still evaluating the potential impacts of ASU 2017-08 but believes that adoption of ASU 2017-08 will not have a material effect on the fund’s overall financial position or its overall results of operations.

Balance Sheet Offsetting – The fund’s accounting policy with respect to balance sheet offsetting is that, absent an event of default by the counterparty or a termination of the agreement, the International Swaps and Derivatives Association (ISDA) Master Agreement does not result in an offset of reported amounts of financial assets and

23

Notes to Financial Statements (unaudited) – continued

financial liabilities in the Statement of Assets and Liabilities across transactions between the fund and the applicable counterparty. The fund’s right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific master netting agreement counterparty is subject. Balance sheet offsetting disclosures, to the extent applicable to the fund, have been included in the fund’s Significant Accounting Policies note under the captions for each of the fund’s in-scope financial instruments and transactions.

Investment Valuations – Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair

24

Notes to Financial Statements (unaudited) – continued

value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund’s assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser’s own assumptions in determining the fair value of investments. Other financial instruments are derivative instruments not reflected in total investments, such as futures contracts and forward foreign currency exchange contracts. The following is a summary of the levels used as of April 30, 2017 in valuing the fund’s assets or liabilities:

Investments at Value	Level 1		Level 2			Level 3		Total
U.S. Treasury Bonds & U.S. Government Agency & Equivalents		$—		$113,581,549			$—		$113,581,549
Non-U.S. Sovereign Debt		—		93,308,820			—		93,308,820
U.S. Corporate Bonds		—		181,098,135			—		181,098,135
Residential Mortgage-Backed Securities		—		12,391,512			—		12,391,512
Commercial Mortgage-Backed Securities		—		1,430,663			—		1,430,663
Asset-Backed Securities (including CDOs)		—		31,143,708			—		31,143,708
Foreign Bonds		—		77,471,212			—		77,471,212
Mutual Funds		21,439,629		—			—		21,439,629
Short-Term Securities		—		5,005,568			—		5,005,568
Total Investments		$21,439,629		$515,431,167			$—		$536,870,796
Other Financial Instruments
Futures Contracts – Assets		$568,966		$—			$—		$568,966
Forward Foreign Currency Exchange Contracts – Assets		—		124,318			—		$124,318
Forward Foreign Currency Exchange Contracts – Liabilities		—		(1,957,731	)		—		(1,957,731	)

For further information regarding security characteristics, see the Portfolio of Investments.

Foreign Currency Translation – Purchases and sales of foreign investments, income, and expenses are converted into U.S. dollars based upon currency exchange rates prevailing on the respective dates of such transactions or on the reporting date for

25

Notes to Financial Statements (unaudited) – continued

foreign denominated receivables and payables. Gains and losses attributable to foreign currency exchange rates on sales of securities are recorded for financial statement purposes as net realized gains and losses on investments. Gains and losses attributable to foreign exchange rate movements on receivables, payables, income and expenses are recorded for financial statement purposes as foreign currency transaction gains and losses. That portion of both realized and unrealized gains and losses on investments that results from fluctuations in foreign currency exchange rates is not separately disclosed.

Derivatives – The fund uses derivatives for different purposes, primarily to increase or decrease exposure to a particular market or segment of the market, or security, to increase or decrease interest rate or currency exposure, or as alternatives to direct investments. Derivatives are used for hedging or non-hedging purposes. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains. When the fund uses derivatives as an investment to increase market exposure, or for hedging purposes, gains and losses from derivative instruments may be substantially greater than the derivative’s original cost.

The derivative instruments used by the fund were futures contracts and forward foreign currency exchange contracts. The fund’s period end derivatives, as presented in the Portfolio of Investments and the associated Derivative Contract tables, generally are indicative of the volume of its derivative activity during the period.

The following table presents, by major type of derivative contract, the fair value, on a gross basis, of the asset and liability components of derivatives held by the fund at April 30, 2017 as reported in the Statement of Assets and Liabilities:

		Fair Value (a)
Risk	Derivative Contracts	Asset Derivatives		Liability Derivatives
Interest Rate	Interest Rate Futures		$568,966		$—
Foreign Exchange	Forward Foreign Currency Exchange		124,318		(1,957,731	)
Total			$693,284		$(1,957,731	)

(a) The value of futures contracts includes cumulative appreciation (depreciation) as reported in the fund’s Portfolio of Investments. Only the current day net variation margin for futures contracts is separately reported within the fund’s Statement of Assets and Liabilities.

The following table presents, by major type of derivative contract, the realized gain (loss) on derivatives held by the fund for the six months ended April 30, 2017 as reported in the Statement of Operations:

Risk	Futures Contracts			Foreign Currency
Interest Rate		$(2,798,298	)		$—
Foreign Exchange		—			4,644,242
Total		$(2,798,298	)		$4,644,242

26

Notes to Financial Statements (unaudited) – continued

The following table presents, by major type of derivative contract, the change in unrealized appreciation (depreciation) on derivatives held by the fund for the six months ended April 30, 2017 as reported in the Statement of Operations:

Risk	Futures Contracts		Translation of Assets and Liabilities in Foreign Currencies
Interest Rate		$1,351,743		$—
Foreign Exchange		—		(4,206,128	)
Total		$1,351,743		$(4,206,128	)

Derivative counterparty credit risk is managed through formal evaluation of the creditworthiness of all potential counterparties. On certain, but not all, uncleared derivatives, the fund attempts to reduce its exposure to counterparty credit risk whenever possible by entering into an ISDA Master Agreement on a bilateral basis. The ISDA Master Agreement gives each party to the agreement the right to terminate all transactions traded under such agreement if there is a certain deterioration in the credit quality of the other party. Upon an event of default or a termination of the ISDA Master Agreement, the non-defaulting party has the right to close out all transactions traded under such agreement and to net amounts owed under each agreement to one net amount payable by one party to the other. This right to close out and net payments across all transactions traded under the ISDA Master Agreement could result in a reduction of the fund’s credit risk to such counterparty equal to any amounts payable by the fund under the applicable transactions, if any.

Collateral and margin requirements differ by type of derivative. Margin requirements are set by the clearing broker and the clearing house for cleared derivatives (e.g., futures contracts, cleared swaps, and exchange-traded options) while collateral terms are contract specific for uncleared derivatives (e.g., forward foreign currency exchange contracts, uncleared swap agreements, and uncleared options). For derivatives traded under an ISDA Master Agreement, which contains a collateral support annex, the collateral requirements are netted across all transactions traded under such agreement and one amount is posted from one party to the other to collateralize such obligations. Cash that has been segregated to cover the fund’s collateral or margin obligations under derivative contracts, if any, will be reported separately in the Statement of Assets and Liabilities as “Restricted cash” or “Deposits with brokers.” Securities pledged as collateral or margin for the same purpose, if any, are noted in the Portfolio of Investments. The fund may be required to make payments of interest on uncovered collateral or margin obligations with the broker. Any such payments are included in “Miscellaneous” expense in the Statement of Operations.

Futures Contracts – The fund entered into futures contracts which may be used to hedge against or obtain broad market exposure, interest rate exposure, currency exposure, or to manage duration. A futures contract represents a commitment for the future purchase or sale of an asset at a specified price on a specified date.

27

Notes to Financial Statements (unaudited) – continued

Upon entering into a futures contract, the fund is required to deposit with the broker, either in cash or securities, an initial margin in an amount equal to a certain percentage of the notional amount of the contract. Subsequent payments (variation margin) are made or received by the fund each day, depending on the daily fluctuations in the value of the contract, and are recorded for financial statement purposes as unrealized gain or loss by the fund until the contract is closed or expires at which point the gain or loss on futures contracts is realized.

The fund bears the risk of interest rates, exchange rates or securities prices moving unexpectedly, in which case, the fund may not achieve the anticipated benefits of the futures contracts and may realize a loss. While futures contracts may present less counterparty risk to the fund since the contracts are exchange traded and the exchange’s clearinghouse guarantees payments to the broker, there is still counterparty credit risk due to the insolvency of the broker. The fund’s maximum risk of loss due to counterparty credit risk is equal to the margin posted by the fund to the broker plus any gains or minus any losses on the outstanding futures contracts.

Forward Foreign Currency Exchange Contracts – The fund entered into forward foreign currency exchange contracts for the purchase or sale of a specific foreign currency at a fixed price on a future date. These contracts may be used to hedge the fund’s currency risk or for non-hedging purposes. For hedging purposes, the fund may enter into contracts to deliver or receive foreign currency that the fund will receive from or use in its normal investment activities. The fund may also use contracts to hedge against declines in the value of foreign currency denominated securities due to unfavorable exchange rate movements. For non-hedging purposes, the fund may enter into contracts with the intent of changing the relative exposure of the fund’s portfolio of securities to different currencies to take advantage of anticipated exchange rate changes.

Forward foreign currency exchange contracts are adjusted by the daily exchange rate of the underlying currency and any unrealized gains or losses are recorded as a receivable or payable for forward foreign currency exchange contracts until the contract settlement date. On contract settlement date, any gain or loss on the contract is recorded as realized gains or losses on foreign currency.

Risks may arise upon entering into these contracts from unanticipated movements in the value of the contract and from the potential inability of counterparties to meet the terms of their contracts. Generally, the fund’s maximum risk due to counterparty credit risk is the unrealized gain on the contract due to the use of Continuous Linked Settlement, a multicurrency cash settlement system for the centralized settlement of foreign transactions. This risk is mitigated in cases where there is an ISDA Master Agreement between the fund and the counterparty providing for netting as described above and, where applicable, by the posting of collateral by the counterparty to the fund to cover the fund’s exposure to the counterparty under such ISDA Master Agreement.

Indemnifications – Under the fund’s organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to the fund. Additionally, in the normal course of business, the fund enters into agreements with service providers that may contain

28

Notes to Financial Statements (unaudited) – continued

indemnification clauses. The fund’s maximum exposure under these agreements is unknown as this would involve future claims that may be made against the fund that have not yet occurred.

Investment Transactions and Income – Investment transactions are recorded on the trade date. Interest income is recorded on the accrual basis. All premium and discount is amortized or accreted for financial statement purposes in accordance with U.S. generally accepted accounting principles. Interest payments received in additional securities are recorded on the ex-interest date in an amount equal to the value of the security on such date.

The fund may receive proceeds from litigation settlements. Any proceeds received from litigation involving portfolio holdings are reflected in the Statement of Operations in realized gain/loss if the security has been disposed of by the fund or in unrealized gain/loss if the security is still held by the fund. Any other proceeds from litigation not related to portfolio holdings are reflected as other income in the Statement of Operations.

The fund invests a significant portion of its assets in asset-backed and/or mortgage-backed securities. The value of these securities may depend, in part, on the issuer’s or borrower’s credit quality or ability to pay principal and interest when due and that value may fall if an issuer or borrower defaults on its obligation to pay principal or interest or if the instrument’s credit rating is downgraded by a credit rating agency. U.S. Government securities not supported as to the payment of principal or interest by the U.S. Treasury, such as those issued by Fannie Mae, Freddie Mac, and the Federal Home Loan Banks, are subject to greater credit risk than are U.S. Government securities supported by the U.S. Treasury, such as those issued by Ginnie Mae.

The fund purchased or sold debt securities on a when-issued or delayed delivery basis, or in a “To Be Announced” (TBA) or “forward commitment” transaction with delivery or payment to occur at a later date beyond the normal settlement period. At the time a fund enters into a commitment to purchase or sell a security, the transaction is recorded and the value of the security acquired is reflected in the fund’s net asset value. The price of such security and the date that the security will be delivered and paid for are fixed at the time the transaction is negotiated. The value of the security may vary with market fluctuations. No interest accrues to the fund until payment takes place. At the time that a fund enters into this type of transaction, the fund is required to have sufficient cash and/or liquid securities to cover its commitments. Losses may arise due to changes in the value of the underlying securities or if the counterparty does not perform under the contract’s terms, or if the issuer does not issue the securities due to political, economic or other factors. Additionally, losses may arise due to declines in the value of the securities prior to settlement date.

To mitigate this risk of loss on TBA securities and other types of forward settling mortgage-backed securities, the fund whenever possible enters into a Master Securities Forward Transaction Agreement (“MSFTA”) on a bilateral basis with each of the counterparties with whom it undertakes a significant volume of transactions. The MSFTA gives each party to the agreement the right to terminate all transactions traded under such agreement if there is a certain deterioration in the credit quality of the other party. Upon an event of default or a termination of the MSFTA, the non-defaulting party has the right

29

Notes to Financial Statements (unaudited) – continued

to close out all transactions traded under such agreement and to net amounts owed under each transaction to one net amount payable by one party to the other. This right to close out and net payments across all transactions traded under the MSFTA could result in a reduction of the fund’s credit risk to such counterparty equal to any amounts payable by the fund under the applicable transactions, if any.

For mortgage-backed securities traded under a MSFTA, the collateral and margining requirements are contract specific. Collateral amounts across all transactions traded under such agreement are netted and one amount is posted from one party to the other to collateralize such obligations. Cash that has been pledged to cover the fund’s collateral or margin obligations under a MSFTA, if any, will be reported separately on the Statement of Assets and Liabilities as restricted cash. Securities pledged as collateral or margin for the same purpose, if any, are noted in the Portfolio of Investments.

Reimbursement of Expenses by Custodian – In December 2015, the fund’s custodian (or former custodian), State Street Bank and Trust Company, announced that it intended to reimburse its asset servicing clients for expense amounts that it billed in error during the period 1998 through 2015. The amount of this one-time reimbursement attributable to the fund is reflected as “Reimbursement of custodian expenses” in the Statement of Operations.

Tax Matters and Distributions – The fund intends to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. As a result, no provision for federal income tax is required. The fund’s federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for a three year period. Management has analyzed the fund’s tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability. Foreign taxes, if any, have been accrued by the fund in the accompanying financial statements in accordance with the applicable foreign tax law. Foreign income taxes may be withheld by certain countries in which the fund invests. Additionally, capital gains realized by the fund on securities issued in or by certain foreign countries may be subject to capital gains tax imposed by those countries.

Distributions to shareholders are recorded on the ex-dividend date. The fund seeks to pay monthly distributions based on an annual rate of 8.5% of the fund’s average monthly net asset value. As a result, distributions may exceed actual earnings which may result in a tax return of capital or, to the extent the fund has long-term gains, distributions of current year long-term gains may be recharacterized as ordinary income. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from U.S. generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future.

30

Notes to Financial Statements (unaudited) – continued

Book/tax differences primarily relate to expiration of capital loss carryforwards, amortization and accretion of debt securities, straddle loss deferrals, and derivative transactions.

For the six months ended April 30, 2017, the amount of distributions estimated to be a tax return of capital was approximately $16,404,893 which are reported as distributions from other sources in the Statements of Changes in Net Assets. The tax character of distributions made during the current period will be determined at fiscal year end. The tax character of distributions declared to shareholders for the last fiscal year is as follows:

	10/31/16
Ordinary income (including any short-term capital gains) (a)		$9,585,719
Tax return of capital (b)		39,950,442
Total distributions		$49,536,161

(a) Included in the fund’s distributions from ordinary income for the year ended October 31, 2016 is $373,256 in excess of investment company taxable income which, in accordance with applicable U.S. tax law, is taxable to shareholders as ordinary income distributions.

(b) Distributions in excess of tax basis earnings and profits are reported in the financial statements as a tax return of capital.

The federal tax cost and the tax basis components of distributable earnings were as follows:

As of 4/30/17
Cost of investments	$542,256,348
Gross appreciation	8,194,081
Gross depreciation	(13,579,633	)
Net unrealized appreciation (depreciation)	$(5,385,552	)
As of 10/31/16
Other temporary differences	(735,105	)
Net unrealized appreciation (depreciation)	957,850

The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.

(3) Transactions with Affiliates

Investment Adviser – The fund has an investment advisory agreement with MFS to provide overall investment management and related administrative services and facilities to the fund. The management fee is computed daily and paid monthly at an annual rate of 0.32% of the fund’s average daily net assets and 5.65% of gross income. Gross income is calculated based on tax elections that generally include the accretion of discount and exclude the amortization of premium, which may differ from investment income reported in the Statement of Operations. MFS has agreed to reduce its management fee to the lesser of the contractual management fee as set forth above or 0.85% of the fund’s average daily net assets. This written agreement will continue until modified by the fund’s Board of Trustees, but such agreement will continue at least until October 31, 2017. For the six months ended April 30, 2017, the fund’s average daily net assets and gross income fees did not meet the thresholds required to

31

Notes to Financial Statements (unaudited) – continued

waive the management fee under this agreement. The management fee, from net assets and gross income, incurred for the six months ended April 30, 2017 was equivalent to an annual effective rate of 0.49% of the fund’s average daily net assets.

Transfer Agent – The fund engages Computershare Trust Company, N.A. (“Computershare”) as the sole transfer agent for the fund. MFS Service Center, Inc. (MFSC) monitors and supervises the activities of Computershare for an agreed upon fee approved by the Board of Trustees. For the six months ended April 30, 2017, these fees paid to MFSC amounted to $15,530.

Administrator – MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to the fund. Under an administrative services agreement, the fund reimburses MFS the costs incurred to provide these services. The fund is charged an annual fixed amount of $17,500 plus a fee based on average daily net assets. The administrative services fee incurred for the six months ended April 30, 2017 was equivalent to an annual effective rate of 0.0174% of the fund’s average daily net assets.

Trustees’ and Officers’ Compensation – The fund pays compensation to independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. The fund does not pay compensation directly to Trustees or officers of the fund who are also officers of the investment adviser, all of whom receive remuneration for their services to the fund from MFS. Certain officers and Trustees of the fund are officers or directors of MFS and MFSC.

Prior to December 31, 2001, the fund had an unfunded defined benefit plan (“DB plan”) for independent Trustees. As of December 31, 2001, the Board took action to terminate the DB plan with respect to then-current and any future independent Trustees, such that the DB plan covers only certain of those former independent Trustees who retired on or before December 31, 2001. The DB plan resulted in a pension expense of $1,824 and is included in “Independent Trustees’ compensation” in the Statement of Operations for the six months ended April 30, 2017. The liability for deferred retirement benefits payable to certain independent Trustees under the DB plan amounted to $23,820 at April 30, 2017, and is included in “Payable for independent Trustees’ compensation” in the Statement of Assets and Liabilities.

Other – This fund and certain other funds managed by MFS (the funds) have entered into a service agreement (the ISO Agreement) which provides for payment of fees solely by the funds to Tarantino LLC in return for the provision of services of an Independent Senior Officer (ISO) for the funds. Frank L. Tarantino serves as the ISO and is an officer of the funds and the sole member of Tarantino LLC. The funds can terminate the ISO Agreement with Tarantino LLC at any time under the terms of the ISO Agreement. For the six months ended April 30, 2017, the fee paid by the fund under this agreement was $524 and is included in “Miscellaneous” expense in the Statement of Operations. MFS has agreed to bear all expenses associated with office space, other administrative support, and supplies provided to the ISO.

The fund invests in the MFS Institutional Money Market Portfolio which is managed by MFS and seeks current income consistent with preservation of capital and liquidity. This money market fund does not pay a management fee to MFS.

32

Notes to Financial Statements (unaudited) – continued

(4) Portfolio Securities

For the six months ended April 30, 2017, purchases and sales of investments, other than short-term obligations, were as follows:

	Purchases		Sales
U.S. Government securities		$103,499,707		$1,673,192
Investments (non-U.S. Government securities)		$84,923,576		$207,638,539

(5) Shares of Beneficial Interest

The fund’s Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. The Trustees have authorized the repurchase by the fund of up to 10% annually of its own shares of beneficial interest. During the six months ended April 30, 2017, there were no transactions in fund shares. The fund repurchased and retired 5,900 shares of beneficial interest during the year ended October 31, 2016 at an average price per share of $4.44 and a weighted average discount of 7.50% per share. Transactions in fund shares were as follows:

	Six months ended April 30, 2017				Year ended October 31, 2016
	Shares		Amount		Shares			Amount
Capital shares reacquired		—		$—		(5,900	)		$(26,196	)

(6) Line of Credit

The fund and certain other funds managed by MFS participate in a $1.25 billion unsecured committed line of credit, subject to a $1 billion sublimit, provided by a syndication of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the higher of the Overnight Federal Reserve funds rate or daily one month LIBOR plus an agreed upon spread. A commitment fee, based on the average daily, unused portion of the committed line of credit, is allocated among the participating funds at the end of each calendar quarter. In addition, the fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund, based on its borrowings, at a rate equal to the Overnight Federal Reserve funds rate plus an agreed upon spread. For the six months ended April 30, 2017, the fund’s commitment fee and interest expense were $2,024 and $0, respectively, and are included in “Miscellaneous” expense in the Statement of Operations.

33

Notes to Financial Statements (unaudited) – continued

(7) Transactions in Underlying Affiliated Funds-Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be an affiliated issuer:

Underlying Affiliated Fund	Beginning Shares/Par Amount			Acquisitions Shares/Par Amount		Dispositions Shares/Par Amount			Ending Shares/Par Amount
MFS Institutional Money Market Portfolio		9,232,328			168,047,275		(155,839,974	)		21,439,629
Underlying Affiliated Fund	Realized Gain (Loss)			Capital Gain Distributions		Dividend Income			Ending Value
MFS Institutional Money Market Portfolio		$(2,115	)		$—		$62,958			$21,439,629

34

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Trustees and Shareholders of MFS Intermediate Income Trust:

We have reviewed the accompanying statement of assets and liabilities of MFS Intermediate Income Trust (the “Fund”), including the portfolio of investments, as of April 30, 2017, and the related statements of operations and changes in net assets, and financial highlights for the six-month period ended April 30, 2017. These interim financial statements and financial highlights are the responsibility of the Fund’s management.

We conducted our review in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should be made to the accompanying interim financial statements and financial highlights referred to above for them to be in conformity with accounting principles generally accepted in the United States of America.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the statement of changes in net assets for the year ended October 31, 2016, and the financial highlights for each of the five years in the period ended October 31, 2016, and in our report dated December 15, 2016, we expressed an unqualified opinion on such statement of changes in net assets and financial highlights.

DELOITTE & TOUCHE LLP

Boston, Massachusetts

June 16, 2017

35

PROXY VOTING POLICIES AND INFORMATION

MFS votes proxies on behalf of the fund pursuant to proxy voting policies and procedures that are available without charge, upon request, by calling 1-800-225-2606, by visiting mfs.com (once you have selected “Individual Investor” as your role, click on “Individual Investor Home” in the top navigation and then select “Learn More About Proxy Voting” under the “I want to…” header on the left hand column of the page), or by visiting the SEC’s Web site at http://www.sec.gov.

Information regarding how the fund voted proxies relating to portfolio securities during the most recent twelve-month period ended June 30 is available by August 31 of each year without charge by visiting mfs.com (once you have selected “Individual Investor” as your role, click on “Individual Investor Home” in the top navigation and then select “Learn More About Proxy Voting” under the “I want to…” header on the left hand column of the page), or by visiting the SEC’s Web site at http://www.sec.gov.

QUARTERLY PORTFOLIO DISCLOSURE

The fund will file a complete schedule of portfolio holdings with the Securities and Exchange Commission (the Commission) for the first and third quarters of each fiscal year on Form N-Q. A shareholder can obtain the quarterly portfolio holdings report at mfs.com. The fund’s Form N-Q is also available on the EDGAR database on the Commission’s Internet Web site at http://www.sec.gov, and may be reviewed and copied at the:

Public Reference Room

Securities and Exchange Commission

100 F Street, NE, Room 1580

Washington, D.C. 20549

Information on the operation of the Public Reference Room may be obtained by calling the Commission at 1-800-SEC-0330. Copies of the fund’s Form N-Q also may be obtained, upon payment of a duplicating fee, by electronic request at the following e-mail address: publicinfo@sec.gov or by writing the Public Reference Section at the above address.

FURTHER INFORMATION

From time to time, MFS may post important information about the fund or the MFS funds on the MFS web site (mfs.com). This information is available by visiting the “Market Commentary” and “Announcements” sub sections in the “Market Outlooks” section of mfs.com or by clicking on the fund’s name under “Closed-End Funds” in the “Products” section of mfs.com.

Additional information about the fund (e.g. performance, dividends and the fund’s price history) is also available by clicking on the fund’s name under “Closed-End Funds” in the “Products” section of mfs.com.

36

INFORMATION ABOUT FUND CONTRACTS AND LEGAL CLAIMS

The fund has entered into contractual arrangements with an investment adviser, administrator, transfer agent, and custodian who each provide services to the fund. Unless expressly stated otherwise, shareholders are not parties to, or intended beneficiaries of these contractual arrangements, and these contractual arrangements are not intended to create any shareholder right to enforce them against the service providers or to seek any remedy under them against the service providers, either directly or on behalf of the fund.

Under the Trust’s By-Laws and Declaration of Trust, any claims asserted against or on behalf of the MFS Funds, including claims against Trustees and Officers, must be brought in state and federal courts located within the Commonwealth of Massachusetts.

37

CONTACT US

TRANSFER AGENT, REGISTRAR, AND

DIVIDEND DISBURSING AGENT

CALL

1-800-637-2304

9 a.m. to 5 p.m. Eastern time

WRITE

Computershare Trust Company, N.A.

P.O. Box 43078

Providence, RI 02940-3078

New York Stock Exchange Symbol: MIN

ITEM 2. CODE OF ETHICS.

Effective January 1, 2017, the Code of Ethics (the “Code”) was amended to (i) clarify that the term “for profit” company as used in Section II.B of the Code excludes the investment adviser and its subsidiaries and pooled investment vehicles sponsored by the investment adviser or its subsidiaries, (ii) align the Code’s provisions regarding receipt of gifts and entertainment in Section II.B of the Code with the gifts and entertainment policy of the Funds’ investment adviser, and (iii) make other administrative changes. During the period covered by this report, the Registrant did not grant a waiver, including an implicit waiver, from any provision of the Code.

A copy of the amended Code effective as of January 1, 2017 is filed as an exhibit to this Form N-CSR.

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.

Not applicable for semi-annual reports.

ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

Not applicable for semi-annual reports.

ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.

Not applicable for semi-annual reports.

ITEM 6. SCHEDULE OF INVESTMENTS

A schedule of investments for MFS Intermediate Income Trust is included as part of the report to shareholders under Item 1 of this Form N-CSR.

ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable for semi-annual reports.

ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Portfolio Manager(s)

Information regarding the portfolio manager(s) of the MFS Intermediate Income Trust (the “Fund”) is set forth below. Each portfolio manager is primarily responsible for the day-to-day management of the Fund.

As of February 1, 2017, James Calmas was no longer a portfolio manager of the Fund. Geoffrey Schechter and Alexander Mackey became portfolio managers of the Fund on February 1, 2017.

Portfolio Manager	Primary Role	Since	Title and Five Year History
Geoffrey Schechter	Lead Portfolio Manager	February 2017	Investment Officer of MFS; employed in the investment area of MFS since 1993
Alexander Mackey	Investment Grade Debt Instruments Portfolio Manager	February 2017	Investment Officer of MFS; employed in the investment area of MFS since 2001
Erik Weisman	Sovereign Debt Instruments Portfolio Manager	2004	Investment Officer of MFS; employed in the investment area of MFS since 2002.

Compensation

Portfolio manager compensation is reviewed annually. As of December 31, 2016, portfolio manager total cash compensation is a combination of base salary and performance bonus:

Base Salary – Base salary represents a smaller percentage of portfolio manager total cash compensation than performance bonus.

Performance Bonus – Generally, the performance bonus represents more than a majority of portfolio manager total cash compensation.

The performance bonus is based on a combination of quantitative and qualitative factors, generally with more weight given to the former and less weight given to the latter.

The quantitative portion is primarily based on the pre-tax performance of assets managed by the portfolio manager over three- and five-year periods relative to peer group universes and/or indices (“benchmarks”). As of December 31, 2016, the following benchmarks were used to measure the following portfolio manager’s performance for the Fund:

Fund	Portfolio Manager	Benchmark(s)
MFS Intermediate Income Trust	Geoffrey Schechter1	Bloomberg Barclays Intermediate U.S. Government/Credit Bond Index JPMorgan Global Government Bond Index ex U.S. Hedged
	Alexander Mackey1	Bloomberg Barclays Intermediate U.S. Government/Credit Bond Index
	Erik Weisman	JPMorgan Global Government Bond Index ex U.S. Hedged

¹  Information is as of February 1, 2017.

Additional or different benchmarks, including versions and components of indices, custom indices, and linked indices that combine performance of different indices for different portions of the time period, may also be used. Consideration is primarily given to portfolio

performance over three and five years with consideration given to other periods if available. For portfolio managers who have served for more than five years, additional, longer-term performance periods, including the ten-year and since inception periods, are also considered. For portfolio managers who have served for less than three years, additional, shorter-term performance periods, including the one-year period, may also be considered. Emphasis is generally placed on longer performance periods when multiple performance periods are available.

The qualitative portion is based on the results of an annual internal peer review process (conducted by other portfolio managers, analysts, and traders) and management’s assessment of overall portfolio manager contributions to investor relations and the investment process (distinct from fund and other account performance). This performance bonus may be in the form of cash and/or a deferred cash award, at the discretion of management. A deferred cash award is issued for a cash value and becomes payable over a three-year vesting period if the portfolio manager remains in the continuous employ of MFS or its affiliates. During the vesting period, the value of the unfunded deferred cash award will fluctuate as though the portfolio manager had invested the cash value of the award in an MFS Fund(s) selected by the portfolio manager. A selected fund may be, but is not required to be, a fund that is managed by the portfolio manager.

Portfolio managers also typically benefit from the opportunity to participate in the MFS Equity Plan. Equity interests are awarded by management, on a discretionary basis, taking into account tenure at MFS, contribution to the investment process, and other factors.

Finally, portfolio managers also participate in benefit plans (including a defined contribution plan and health and other insurance plans) and programs available generally to other employees of MFS. The percentage such benefits represent of any portfolio manager’s compensation depends upon the length of the individual’s tenure at MFS and salary level, as well as other factors.

Ownership of Fund Shares

The following table shows the dollar range of equity securities of the Fund beneficially owned by the Fund’s portfolio manager(s) as of the Fund’s fiscal year ended October 31, 2016. The following dollar ranges apply:

N. None

A. $1 – $10,000

B. $10,001 – $50,000

C. $50,001 – $100,000

D. $100,001 – $500,000

E. $500,001 – $1,000,000

F. Over $1,000,000

Name of Portfolio Manager	Dollar Range of Equity Securities in Fund
Geoffrey Schechter1	N
Alexander Mackey1	N
Erik Weisman	N

¹  Messrs. Schechter and Mackey became portfolio managers of the Fund on February 1, 2017. Information is as of April 30, 2017.

Other Accounts

In addition to the Fund, each portfolio manager of the Fund is named as a portfolio manager of certain other accounts managed or subadvised by MFS or an affiliate. The number and assets of these accounts were as follows as of the Fund’s fiscal year ended October 31, 2016:

	Registered Investment Companies*				Other Pooled Investment Vehicles				Other Accounts
Name	Number of Accounts		Total Assets		Number of Accounts		Total Assets		Number of Accounts		Total Assets
Geoffrey Schechter1		14	$	18.1 billion		3	$	691.7 million		0		N/A
Alexander Mackey1		9	$	8.3 billion		3	$	1.0 billion		0		N/A
Erik S. Weisman		8	$	6.2 billion		4	$	3.0 billion		1	$	324.0 million

* Includes the Fund.

¹  Messrs. Schechter and Mackey became portfolio managers of the Fund on February 1, 2017. Account information is as of April 30, 2017.

Advisory fees are not based upon performance of any of the accounts identified in the table above.

Potential Conflicts of Interest

MFS seeks to identify potential conflicts of interest resulting from a portfolio manager’s management of both the Fund and other accounts, and has adopted policies and procedures designed to address such potential conflicts.

The management of multiple funds and accounts (including proprietary accounts) gives rise to conflicts of interest if the funds and accounts have different objectives and strategies, benchmarks, time horizons and fees as a portfolio manager must allocate his or her time and investment ideas across multiple funds and accounts. In certain instances there are securities which are suitable for the Fund’s portfolio as well as for accounts of MFS or its subsidiaries with similar investment objectives. The Fund’s trade allocation policies may give rise to conflicts of interest if the Fund’s orders do not get fully executed or are delayed in getting executed due to being aggregated with those of other accounts of MFS or its subsidiaries. A portfolio manager may execute transactions for another fund or account that may adversely affect the value of the Fund’s investments. Investments selected for funds or accounts other than the Fund may outperform investments selected for the Fund.

When two or more clients are simultaneously engaged in the purchase or sale of the same security, the securities are allocated among clients in a manner believed by MFS to be fair and equitable to each. Allocations may be based on many factors and may not always be pro rata based on assets managed. The allocation methodology could have a detrimental effect on the price or volume of the security as far as the Fund is concerned.

MFS and/or a portfolio manager may have a financial incentive to allocate favorable or limited opportunity investments or structure the timing of investments to favor accounts other than the Fund, for instance, those that pay a higher advisory fee and/or have a performance adjustment and/or include an investment by the portfolio manager.

ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.

MFS Intermediate Income Trust

Period	(a) Total number of Shares Purchased		(b) Average Price Paid per Share		(c) Total Number of Shares Purchased as Part of  Publicly Announced Plans or Programs		(d) Maximum Number (or Approximate Dollar Value)  of Shares that May Yet Be Purchased under the Plans or Programs
11/01/16-11/30/16		0		N/A		0		11,767,957
12/01/16-12/31/16		0		N/A		0		11,767,957
1/01/17-1/31/17		0		N/A		0		11,767,957
2/01/17-2/28/17		0		N/A		0		11,767,957
3/01/17-3/31/17		0		N/A		0		11,767,957
4/01/17-4/30/17		0		N/A		0		11,767,957
Total		0				0

Note: The Board approved procedures to repurchase shares and reviews the results periodically. The notification to shareholders of the program is part of the semi-annual and annual reports sent to shareholders. These annual programs begin on October 1st of each year. The programs conform to the conditions of Rule 10b-18 of the Securities Exchange Act of 1934 and limit the aggregate number of shares that may be purchased in each annual period (October 1 through the following September 30) to 10% of the Registrant’s outstanding shares as of the first day of the plan year (October 1). The aggregate number of shares available for purchase for the October 1, 2016 plan year is 11,773,857.

ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

There were no material changes to the procedures by which shareholders may send recommendations to the Board for nominees to the Registrant’s Board since the Registrant last provided disclosure as to such procedures in response to the requirements of Item 407 (c)(2)(iv) of Regulation S-K or this Item.

ITEM 11. CONTROLS AND PROCEDURES.

(a) Based upon their evaluation of the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the “Act”)) as conducted within 90 days of the filing date of this Form N-CSR, the registrant’s principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

(b) There were no changes in the registrant’s internal controls over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the second fiscal quarter covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

ITEM 12. EXHIBITS.

(a) File the exhibits listed below as part of this form. Letter or number the exhibits in the sequence indicated.

(1) Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit. Attached hereto.

(2) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Act (17 CFR 270.30a-2): Attached hereto.

(3) Notices to Trust’s common shareholders in accordance with Investment Company Act Section 19(a) and Rule 19a-1. Attached hereto.

(b) If the report is filed under Section 13(a) or 15(d) of the Exchange Act, provide the certifications required by Rule 30a-2(b) under the Act (17 CFR 270.30a-2(b)), Rule 13a-14(b) or Rule 15d-14(b) under the Exchange Act (17 CFR 240.13a-14(b) or 240.15d-14(b)) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) as an exhibit. A certification furnished pursuant to this paragraph will not be deemed “filed” for the purposes of Section 18 of the Exchange Act (15 U.S.C. 78r), or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, except to the extent that the registrant specifically incorporates it by reference: Attached hereto.

Notice

A copy of the Amended and Restated Declaration of Trust of the Registrant is on file with the Secretary of State of the Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and the obligations of or arising out of this instrument are not binding upon any of the Trustees or shareholders individually, but are binding only upon the assets and property of the respective constituent series of the Registrant.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Registrant: MFS INTERMEDIATE INCOME TRUST

By (Signature and Title)*	DAVID L. DILORENZO
	David L. DiLorenzo, President

Date: June 16, 2017

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title)*	DAVID L. DILORENZO
	David L. DiLorenzo, President (Principal Executive Officer)

Date: June 16, 2017

By (Signature and Title)*	JAMES O. YOST
	James O. Yost, Treasurer (Principal Financial Officer and Accounting Officer)

Date: June 16, 2017

* Print name and title of each signing officer under his or her signature.

EX-99.(12)(A)(1)

EX-99.COE

Code of Ethics for Principal Executive and Principal Financial Officers

Effective January 1, 2017

I. Policy Purpose and Summary

Section 406 of the Sarbanes-Oxley Act requires that the each MFS Fund registered under the Investment Company Act of 1940 adopt a code of ethics for senior financial officers, applicable to its principal financial officer and principal accounting officer.

II. Overview

A. Covered Officers/Purpose of the Code

This code of ethics (this “Code”) has been adopted by the funds (collectively, “Funds” and each, “Fund”) under supervision of the MFS Funds Board (the “Board”) and applies to the Funds’ Principal Executive Officer and Principal Financial Officer (the “Covered Officers” each of whom is set forth in Exhibit A) for the purpose of promoting:

• honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships;

• full, fair, accurate, timely and understandable disclosure in reports and documents that the Funds file with, or submit to, the Securities and Exchange Commission (“SEC”) and in other public communications made by the Funds;

• compliance by the Funds with applicable laws and governmental rules and regulations;

• the prompt internal reporting of violations of the Code to an appropriate person or persons identified in the Code; and

• accountability for adherence to the Code.

B. Conduct Guidelines

Each Covered Officer should adhere to a high standard of business ethics and should be sensitive to situations that may give rise to actual as well as apparent conflicts of interest. In addition, each Covered Officer should not place his or her personal interests ahead of the Funds’ interests and should endeavor to act honestly and ethically. In furtherance of the foregoing, each Covered Officer must:

• not use his or her personal influence or personal relationships improperly to influence investment decisions or financial reporting for any Fund whereby the Covered Officer would benefit personally to the detriment of the Fund; and

• not cause a Fund to take action, or fail to take action, for the individual personal benefit of the Covered Officer rather than the benefit the Fund.

The following activities, which could create the appearance of a conflict of interest, are permitted only with the approval of the Funds’ Chief Legal Officer (“CLO”):

• service as a director on the board of any “for profit” company other than the board of the Funds’ investment adviser or its subsidiaries or board of a pooled investment vehicle sponsored by the Funds’ investment adviser or its subsidiaries;

• running for political office;

• the receipt of any Fund business-related gift or any entertainment from any company with which a Fund has current or prospective business dealings unless such gift or entertainment is permitted by the gifts and entertainment policy of the Funds’ investment adviser;

• any material ownership interest in, or any consulting or employment relationship with, any Fund service providers (e.g., custodian banks, audit firms), other than the Funds’ investment adviser, principal underwriter, administrator or any affiliated person thereof;

• a direct or indirect financial interest in commissions, transaction charges or spreads paid by a Fund for effecting portfolio transactions or for selling or redeeming shares, other than an interest arising from the Covered Officer’s employment or securities ownership.

C. Disclosure and Compliance

• Each Covered Officer should familiarize himself or herself with the disclosure requirements generally applicable to the Funds;

• each Covered Officer should not knowingly misrepresent, or cause others to misrepresent, facts about a Fund to others, whether within or outside the Fund, including to the Fund’s trustees and auditors, and to governmental regulators and self-regulatory organizations;

• each Covered Officer should, to the extent appropriate within his or her area of Fund responsibility, consult with other officers and employees of the Funds and the adviser with the goal of promoting full, fair, accurate, timely and understandable disclosure in the reports and documents the Funds file with, or submit to, the SEC and in other public communications made by the Funds; and

• it is the responsibility of each Covered Officer to promote compliance within his or her area of Fund responsibility with the standards and restrictions imposed by applicable laws, rules and regulations.

D. Reporting and Accountability

Each Covered Officer must:

• upon adoption of the Code (or thereafter as applicable, upon becoming a Covered Officer), affirm in writing to the Boards that he or she has received, read, and understands the Code;

• annually thereafter affirm to the Boards that he or she has complied with the requirements of the Code;

• annually report to the CLO affiliations and relationships which are or may raise the appearance of a conflict of interest with the Covered Officer’s duties to the Funds, as identified in the annual Trustee and Officer Questionnaire;

• not retaliate against any other Covered Officer or any officer or employee of the Funds or their affiliated persons for reports of potential violations that are made in good faith; and

• notify the CLO promptly if he or she knows of any violation of this Code. Failure to do so is itself a violation of this Code.

The CLO is responsible for applying this Code to specific situations in which questions are presented under it, granting waivers upon consultation with the appropriate Board or its designee, investigating violations, and has the authority to interpret this Code in any particular situation. The CLO will report requests for waivers to the appropriate Board (or a designee thereof) promptly upon receipt of a waiver request and will periodically report to the appropriate Board any approvals granted since the last report.

The CLO will take all appropriate action to investigate any potential violations reported to him or her and to report any violations to the appropriate Board. If the Board concurs that a violation has occurred, it will consider appropriate action, which may include review of, and appropriate modifications to, applicable policies and procedures; notification to appropriate personnel of the investment adviser or its board; or a recommendation to dismiss the Covered Officer.

Any changes to or waivers of this Code will, to the extent required, be disclosed as provided by SEC rules.

E. Confidentiality

All reports and records prepared or maintained pursuant to this Code and under the direction of the CLO will be considered confidential and shall be maintained and protected accordingly. Except as otherwise required by law or this Code, such matters shall not be disclosed to anyone other than the appropriate Funds’ Board, its counsel, counsel to the Board’s independent trustees and senior management and the board of directors of the Fund’s investment adviser and its counsel.

F. Internal Use

The Code is intended solely for the internal use by the Funds and does not constitute an admission, by or on behalf of any Fund, as to any fact, circumstance, or legal conclusion.

III. Supervision

The Board of Trustees of the Fund, including a majority of the Trustees who are not “interested persons” (as defined in the 1940 Act) of the Fund, shall review no less frequently than annually, a report from the CLO regarding the affirmations of the principal executive officer and the principal financial officer as to compliance with this Code.

IV. Interpretation and Escalation

Breaches of the Code are reviewed by the CLO and communicated to the Board of Trustees of the affected Fund(s). Interpretations of this Policy shall be made from time to time by the CLO, as needed, and questions regarding the application of this Policy to a specific set of facts are escalated to the CLO.

V. Authority

Section 406 of the Sarbanes-Oxley Act.

VI. Monitoring

Adherence to this policy is monitored by the CLO.

VII. Related Policies

This Code shall be the sole code of ethics adopted by the Funds for purposes of Section 406 of the Sarbanes-Oxley Act and the rules and forms applicable to registered investment companies thereunder. Insofar as other policies or procedures of the Funds, the Funds’ adviser, principal underwriter, or other service providers govern or purport to govern the behavior or activities of the Covered Officers who are subject to this Code, they are superseded by this Code to the extent that they overlap or conflict with the provisions of this Code. The Funds’ and their investment adviser’s codes of ethics under Rule 17j-1 under the Investment Company Act and any other codes or policies or procedures adopted by the Funds or their investment adviser or other service providers are separate requirements and are not part of this Code.

VIII. Amendment

Any amendments to this Code, other than amendments to Exhibit A, must be approved or ratified by a majority vote of each Board, including a majority of independent trustees.

IX. Recordkeeping

All required books, records and other documentation shall be retained in accordance with MFS’ related record retention policy.

Additional procedures may need to be implemented by departments to properly comply with this policy.

Exhibit A

As of January 1, 2017

Persons Covered by this Code of Ethics

Funds’ Principal Executive Officer: David L. DiLorenzo

Funds’ Principal Financial Officer: James O. Yost

EX-99.(12)(A)(3)

EX-99.12(a)(3)

MFS^® Intermediate Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period		April 2017
Distribution amount per share	$	0.03266

The following table sets forth the estimated amounts of the current distribution and the cumulative distributions paid this fiscal year to date from the following sources: net investment income, net realized short-term capital gains, net realized long-term capital gains and return of capital or other capital source. The fund’s fiscal year begins each November 1^st. All amounts are expressed per common share.

	Current distribution		% Breakdown of current distribution			Total cumulative distributions for the fiscal year to date		% Breakdown of the total cumulative distributions for the fiscal year to date
Net Investment Income	$	0.00810		25	%	$	0.07412		37	%
Net Realized ST Cap Gains		0.00768		24	%		0.01209		6	%
Net Realized LT Cap Gains		0.00000		0	%		0.01418		7	%
Return of Capital or Other Capital Source		0.01688		51	%		0.09920		50	%
Total (per common share)	$	0.03266		100	%	$	0.19959		100	%
Average annual total return (in relation to NAV) for the five years ended 3-31-2017									2.88	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 3-31-2017									8.50	%
Cumulative total return (in relation to NAV) for the fiscal year through 3-31-2017									-0.23	%
Cumulative fiscal year distributions as a percentage of NAV as of 3-31-2017									4.33	%

You should not draw any conclusions about the fund’s investment performance from the amount of this distribution or from the terms of the fund’s managed distribution plan.

The fund estimates that it has distributed more than its income and capital gains; therefore, a portion of your distribution may be a return of capital. A return of capital may occur, for example, when some or all of the money that you invested in the fund is paid back to you. A return of capital distribution does not necessarily reflect the fund’s investment performance and should not be confused with “yield” or “income.”

The amounts and sources of distributions reported in this notice are only estimates and are not being provided for tax-reporting purposes. The actual amounts and sources of the amounts for tax-reporting purposes will depend upon the fund’s investment experience during the remainder of its fiscal year and may be subject to changes based on tax regulations. The fund will send you a Form 1099-DIV for the calendar year that will tell you how to report these distributions for federal income tax purposes.

If you have any questions regarding this information, please call our fund service department at 1-800-637-2304 any business day from 9 a.m. to 5 p.m. Eastern time.

EX-99.CERT

EX-99.302CERT

MFS INTERMEDIATE INCOME TRUST

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT

I, James O. Yost, certify that:

1. I have reviewed this report on Form N-CSR of MFS Intermediate Income Trust;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of a date within 90 days prior to the filing date of this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the second fiscal quarter of the period covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: June 16, 2017	JAMES O. YOST
	James O. Yost
	Treasurer (Principal Financial Officer and Accounting Officer)

EX-99.302CERT

MFS INTERMEDIATE INCOME TRUST

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT

I, David L. DiLorenzo, certify that:

1. I have reviewed this report on Form N-CSR of MFS Intermediate Income Trust;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of a date within 90 days prior to the filing date of this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the second fiscal quarter of the period covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: June 16, 2017	DAVID L. DILORENZO
	David L. DiLorenzo
	President (Principal Executive Officer)

EX-99.906CERT

EX-99.906CERT

MFS INTERMEDIATE INCOME TRUST

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

I, James O. Yost, certify that, to my knowledge:

1. The Form N-CSR (the “Report”) of MFS Intermediate Income Trust (the “Registrant”) fully complies for the period covered by the Report with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: June 16, 2017	JAMES O. YOST
	James O. Yost
	Treasurer (Principal Financial Officer and Accounting Officer)

A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.

EX-99.906CERT

MFS INTERMEDIATE INCOME TRUST

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

I, David L. DiLorenzo, certify that, to my knowledge:

1. The Form N-CSR (the “Report”) of MFS Intermediate Income Trust (the “Registrant”) fully complies for the period covered by the Report with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: June 16, 2017	DAVID L. DILORENZO
	David L. DiLorenzo
	President (Principal Executive Officer)

A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.