Ex-99.19a-1

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	December-2021
Distribution amount per share	$0.05602

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	$	0.05602		100	%	$	0.05602		100	%
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		0.00000		0	%		0.00000		0	%
Total (per common share)	$	0.05602		100	%	$	0.05602		100	%

Average annual total return (in relation to NAV) for the five years ended 11-30-2021	6.57	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 11-30-2021	8.10	%
Cumulative total return (in relation to NAV) for the fiscal year through 11-30-2021	1.00	%
Cumulative fiscal year distributions as a percentage of NAV as of 11-30-2021	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-1221

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	January-2022
Distribution amount per share	$0.05566

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	$	0.02171		39	%	$	0.04356		39	%
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		0.03395		61	%		0.06812		61	%
Total (per common share)	$	0.05566		100	%	$	0.11168		100	%

Average annual total return (in relation to NAV) for the five years ended 12-31-2021	6.49	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 12-31-2021	8.00	%
Cumulative total return (in relation to NAV) for the fiscal year through 12-31-2021	1.28	%
Cumulative fiscal year distributions as a percentage of NAV as of 12-31-2021	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-0122

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	February-2022
Distribution amount per share	$0.05476

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	$	0.03121		57	%	$	0.07989		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		0.02355		43	%		0.08655		52	%
Total (per common share)	$	0.05476		100	%	$	0.16644		100	%

Average annual total return (in relation to NAV) for the five years ended 1-31-2022	5.71	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 1-31-2022	8.14	%
Cumulative total return (in relation to NAV) for the fiscal year through 1-31-2022	-1.45	%
Cumulative fiscal year distributions as a percentage of NAV as of 1-31-2022	2.06	%

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-0222

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	March-2022
Distribution amount per share	$0.05286

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	$	0.01797		34	%	$	0.09430		43	%
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		0.03489		66	%		0.12500		57	%
Total (per common share)	$	0.05286		100	%	$	0.21930		100	%

Average annual total return (in relation to NAV) for the five years ended 2-28-2022	4.98	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 2-28-2022	8.07	%
Cumulative total return (in relation to NAV) for the fiscal year through 2-28-2022	-3.31	%
Cumulative fiscal year distributions as a percentage of NAV as of 2-28-2022	2.79	%

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-0322

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	April-2022
Distribution amount per share	$0.05142

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	$	0.03702		72	%	$	0.13536		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		0.01440		28	%		0.13536		50	%
Total (per common share)	$	0.05142		100	%	$	0.27072		100	%

Average annual total return (in relation to NAV) for the five years ended 3-31-2022	4.81	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 3-31-2022	7.97	%
Cumulative total return (in relation to NAV) for the fiscal year through 3-31-2022	-4.11	%
Cumulative fiscal year distributions as a percentage of NAV as of 3-31-2022	3.50	%

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-0422

MFS^® Charter Income Trust

P.O. Box 505005

Louisville, KY 40233-5005

Notice to shareholders — Source of distribution

Distribution period	May-2022
Distribution amount per share	$0.05032

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	$	0.04126		82	%	$	0.26005		81	%
Net Realized ST Cap Gains		0.00000		0	%		0.00000		0	%
Net Realized LT Cap Gains		0.00906		18	%		0.02889		9	%
Return of Capital or Other Capital Source		0.00000		0	%		0.03210		10	%
Total (per common share)	$	0.05032		100	%	$	0.32104		100	%

Average annual total return (in relation to NAV) for the five years ended 4-30-2022	3.66	%
Annualized current distribution rate expressed as a percentage of month end NAV as of 4-30-2022	8.20	%
Cumulative total return (in relation to NAV) for the fiscal year through 4-30-2022	-8.13	%
Cumulative fiscal year distributions as a percentage of NAV as of 4-30-2022	4.36	%

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-0522