EX-99.19a-1

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	December 2017
Distribution amount per share	$0.06182

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	$	0.03096		50	%	$	0.03096		50	%
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		0.03086		50	%		0.03086		50	%
Total (per common share)	$	0.06182		100	%	$	0.06182		100	%

Average annual total return (in relation to NAV) for the five years ended 11-30-2017	5.77	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 11-30-2017	8.01	%
Cumulative total return (in relation to NAV) for the fiscal year through 11-30-2017	9.02	%
Cumulative fiscal year distributions as a percentage of NAV as of 11-30-2017	0.67	%

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-1217

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	January 2018
Distribution amount per share	$0.06163

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	$	0.02954		48	%	$	0.05907		48	%
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		0.03209		52	%		0.06438		52	%
Total (per common share)	$	0.06163		100	%	$	0.12345		100	%

Average annual total return (in relation to NAV) for the five years ended 12-31-2017	5.60	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 12-31-2017	8.03	%
Cumulative total return (in relation to NAV) for the fiscal year through 12-31-2017	0.18	%
Cumulative fiscal year distributions as a percentage of NAV as of 12-31-2017	1.34	%

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-0118

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	February 2018
Distribution amount per share	$0.06136

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	$	0.03012		49	%	$	0.08929		48	%
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		0.03124		51	%		0.09552		52	%
Total (per common share)	$	0.06136		100	%	$	0.18481		100	%

Average annual total return (in relation to NAV) for the five years ended 01-31-2018	5.53	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 01-31-2018	8.04	%
Cumulative total return (in relation to NAV) for the fiscal year through 01-31-2018	0.37	%
Cumulative fiscal year distributions as a percentage of NAV as of 01-31-2018	2.02	%

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-0218

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	March 2018
Distribution amount per share	$0.06022

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	$	0.03058		51	%	$	0.11970		49	%
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		0.02964		49	%		0.12533		51	%
Total (per common share)	$	0.06022		100	%	$	0.24503		100	%

Average annual total return (in relation to NAV) for the five years ended 02-28-2018	5.27	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 02-28-2018	8.02	%
Cumulative total return (in relation to NAV) for the fiscal year through 02-28-2018	-0.54	%
Cumulative fiscal year distributions as a percentage of NAV as of 02-28-2018	2.72	%

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-0318

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	April 2018
Distribution amount per share	$0.05965

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	$	0.03005		50	%	$	0.14892		49	%
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		0.02960		50	%		0.15576		51	%
Total (per common share)	$	0.05965		100	%	$	0.30468		100	%

Average annual total return (in relation to NAV) for the five years ended 03-31-2018	5.11	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 03-31-2018	8.02	%
Cumulative total return (in relation to NAV) for the fiscal year through 03-31-2018	-0.69	%
Cumulative fiscal year distributions as a percentage of NAV as of 03-31-2018	3.41	%

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-0418

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	May 2018
Distribution amount per share	$0.05950

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	$	0.02936		49	%	$	0.17713		49	%
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		0.03014		51	%		0.18705		51	%
Total (per common share)	$	0.05950		100	%	$	0.36418		100	%

Average annual total return (in relation to NAV) for the five years ended 04-30-2018	4.78	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 04-30-2018	8.04	%
Cumulative total return (in relation to NAV) for the fiscal year through 04-30-2018	-0.52	%
Cumulative fiscal year distributions as a percentage of NAV as of 04-30-2018	4.10	%

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-0518

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	June 2018
Distribution amount per share	$0.05873

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	$	0.03067		52	%	$	0.20862		49	%
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		0.02806		48	%		0.21429		51	%
Total (per common share)	$	0.05873		100	%	$	0.42291		100	%

Average annual total return (in relation to NAV) for the five years ended 05-31-2018	4.96	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 05-31-2018	8.03	%
Cumulative total return (in relation to NAV) for the fiscal year through 05-31-2018	-0.91	%
Cumulative fiscal year distributions as a percentage of NAV as of 05-31-2018	4.82	%

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-0618

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	July 2018
Distribution amount per share	$0.05845

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	$	0.02943		50	%	$	0.23655		49	%
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		0.02902		50	%		0.24481		51	%
Total (per common share)	$	0.05845		100	%	$	0.48136		100	%

Average annual total return (in relation to NAV) for the five years ended 06-30-2018	5.59	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 06-30-2018	8.03	%
Cumulative total return (in relation to NAV) for the fiscal year through 06-30-2018	-0.63	%
Cumulative fiscal year distributions as a percentage of NAV as of 06-30-2018	5.51	%

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-0718

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	August 2018
Distribution amount per share	$0.05834

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	$	0.02840		49	%	$	0.26284		49	%
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		0.02994		51	%		0.27686		51	%
Total (per common share)	$	0.05834		100	%	$	0.53970		100	%

Average annual total return (in relation to NAV) for the five years ended 07-31-2018	5.50	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 07-31-2018	7.99	%
Cumulative total return (in relation to NAV) for the fiscal year through 07-31-2018	0.35	%
Cumulative fiscal year distributions as a percentage of NAV as of 07-31-2018	6.16	%

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-0818

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	September 2018
Distribution amount per share	$0.05838

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	$	0.03105		53	%	$	0.29429		49	%
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		0.02733		47	%		0.30379		51	%
Total (per common share)	$	0.05838		100	%	$	0.59808		100	%

Average annual total return (in relation to NAV) for the five years ended 08-31-2018	5.81	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 08-31-2018	8.00	%
Cumulative total return (in relation to NAV) for the fiscal year through 08-31-2018	1.08	%
Cumulative fiscal year distributions as a percentage of NAV as of 08-31-2018	6.83	%

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-0918

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	October 2018
Distribution amount per share	$0.05820

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	$	0.02921		50	%	$	0.32113		49	%
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		0.02899		50	%		0.33515		51	%
Total (per common share)	$	0.05820		100	%	$	0.65628		100	%

Average annual total return (in relation to NAV) for the five years ended 09-30-2018	5.61	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 09-30-2018	8.02	%
Cumulative total return (in relation to NAV) for the fiscal year through 09-30-2018	1.26	%
Cumulative fiscal year distributions as a percentage of NAV as of 09-30-2018	7.53	%

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-1018

MFS^® Charter Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders — Source of distribution

Distribution period	November 2018
Distribution amount per share	$0.05734

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	$	0.02886		50	%	$	0.34976		49	%
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		0.02848		50	%		0.36386		51	%
Total (per common share)	$	0.05734		100	%	$	0.71362		100	%

Average annual total return (in relation to NAV) for the five years ended 10-31-2018	4.86	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 10-31-2018	7.90	%
Cumulative total return (in relation to NAV) for the fiscal year through 10-31-2018	-0.06	%
Cumulative fiscal year distributions as a percentage of NAV as of 10-31-2018	8.19	%

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-1118