EX-99.19a-1

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	June 2020
Distribution amount per share	$0.05581

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 December 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	$	0.03118		56	%	$	0.21232		52	%
Net Realized ST Cap Gains		0.00000		0	%		0.00000		0	%
Net Realized LT Cap Gains		0.00000		0	%		0.00000		0	%
Return of Capital or Other Capital Source		0.02463		44	%		0.19282		48	%
Total (per common share)	$	0.05581		100	%	$	0.40514		100	%

Average annual total return (in relation to NAV) for the five years ended 5-31-2020	5.81	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 5-31-2020	7.83	%
Cumulative total return (in relation to NAV) for the fiscal year through 5-31-2020	-0.14	%
Cumulative fiscal year distributions as a percentage of NAV as of 5-31-2020	4.74	%

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.

MCRSN-0620

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	July 2020
Distribution amount per share	$0.05774

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 December 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	$	0.03170		55	%	$	0.24454		53	%
Net Realized ST Cap Gains		0.00000		0	%		0.00000		0	%
Net Realized LT Cap Gains		0.00000		0	%		0.00000		0	%
Return of Capital or Other Capital Source		0.02604		45	%		0.21834		47	%
Total (per common share)	$	0.05774		100	%	$	0.46288		100	%

Average annual total return (in relation to NAV) for the five years ended 6-30-2020	6.38	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 6-30-2020	8.07	%
Cumulative total return (in relation to NAV) for the fiscal year through 6-30-2020	1.75	%
Cumulative fiscal year distributions as a percentage of NAV as of 6-30-2020	5.39	%

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.

MCRSN-0720

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	August 2020
Distribution amount per share	$0.05825

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 December 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	$	0.03356		58	%	$	0.27996		54	%
Net Realized ST Cap Gains		0.00000		0	%		0.00000		0	%
Net Realized LT Cap Gains		0.00000		0	%		0.00000		0	%
Return of Capital or Other Capital Source		0.02469		42	%		0.24117		46	%
Total (per common share)	$	0.05825		100	%	$	0.52113		100	%

Average annual total return (in relation to NAV) for the five years ended 7-31-2020	7.24	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 7-31-2020	7.87	%
Cumulative total return (in relation to NAV) for the fiscal year through 7-31-2020	7.77	%
Cumulative fiscal year distributions as a percentage of NAV as of 7-31-2020	5.87	%

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.

MCRSN-0820

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	September 2020
Distribution amount per share	$0.05911

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 December 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	$	0.03126		53	%	$	0.30892		53	%
Net Realized ST Cap Gains		0.00000		0	%		0.00000		0	%
Net Realized LT Cap Gains		0.00000		0	%		0.00000		0	%
Return of Capital or Other Capital Source		0.02785		47	%		0.27132		47	%
Total (per common share)	$	0.05911		100	%	$	0.58024		100	%

Average annual total return (in relation to NAV) for the five years ended 8-31-2020	7.66	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 8-31-2020	8.02	%
Cumulative total return (in relation to NAV) for the fiscal year through 8-31-2020	7.19	%
Cumulative fiscal year distributions as a percentage of NAV as of 8-31-2020	6.56	%

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.

MCRSN-0920

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	October - 2020
Distribution amount per share	$0.05856

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 December 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	$	0.03152		54	%	$	0.34070		53	%
Net Realized ST Cap Gains		0.00000		0	%		0.00000		0	%
Net Realized LT Cap Gains		0.00000		0	%		0.00000		0	%
Return of Capital or Other Capital Source		0.02704		46	%		0.29810		47	%
Total (per common share)	$	0.05856		100	%	$	0.63880		100	%

Average annual total return (in relation to NAV) for the five years ended 9-30-2020	7.92	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 9-30-2020	8.07	%
Cumulative total return (in relation to NAV) for the fiscal year through 9-30-2020	5.50	%
Cumulative fiscal year distributions as a percentage of NAV as of 9-30-2020	7.33	%

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.

MCRSN-1020

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	November 2020
Distribution amount per share	$0.05832

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 December 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	$	0.03101		53	%	$	0.37120		53	%
Net Realized ST Cap Gains		0.00000		0	%		0.00000		0	%
Net Realized LT Cap Gains		0.00000		0	%		0.00000		0	%
Return of Capital or Other Capital Source		0.02731		47	%		0.32592		47	%
Total (per common share)	$	0.05832		100	%	$	0.69712		100	%

Average annual total return (in relation to NAV) for the five years ended 10-31-2020	7.40	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 10-31-2020	8.06	%
Cumulative total return (in relation to NAV) for the fiscal year through 10-31-2020	5.40	%
Cumulative fiscal year distributions as a percentage of NAV as of 10-31-2020	8.03	%

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.

MCRSN-1120