EX-99.19a-1

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

April-2026

Distribution amount per share

$0.03293

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 1st. All amounts are expressed per common share.

 

Current

% Breakdown of

Total cumulative

% Breakdown of the total

 

distributions for the

cumulative distributions

 

distribution

current distribution

fiscal year to date

for the fiscal year to date

Net Investment Income

0.03293

100%

0.14928

 

74%

 

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

0.00000

0%

0.05245

 

26%

 

Other Capital Source

 

 

Total (per common share)

0.03293

100%

0.20173

 

100%

 

Average annual total return (in relation to NAV) for the five years ended 3-31-2026

 

 

3.68%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 3-31-2026

 

8.08%

 

Cumulative total return (in relation to NAV) for the fiscal year through 3-31-2026

 

 

-0.21%

 

Cumulative fiscal year distributions as a percentage of NAV as of 3-31-2026

 

 

4.13%

 

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.

MMTSN-0426

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

March-2026

Distribution amount per share

$0.03375

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 1st. All amounts are expressed per common share.

 

Current

% Breakdown of

Total cumulative

% Breakdown of the total

 

distributions for the

cumulative distributions

 

distribution

current distribution

fiscal year to date

for the fiscal year to date

Net Investment Income

0.03375

100%

0.09790

 

58%

 

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

0.00000

0%

0.07090

 

42%

 

Other Capital Source

 

 

Total (per common share)

0.03375

100%

0.16880

 

100%

 

Average annual total return (in relation to NAV) for the five years ended 2-28-2026

 

 

4.11%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 2-28-2026

 

8.02%

 

Cumulative total return (in relation to NAV) for the fiscal year through 2-28-2026

 

 

2.30%

 

Cumulative fiscal year distributions as a percentage of NAV as of 2-28-2026

 

 

3.34%

 

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.

MMTSN-0326

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

February-2026

Distribution amount per share

$0.03375

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 1st. All amounts are expressed per common share.

 

Current

% Breakdown of

Total cumulative

% Breakdown of the total

 

distributions for the

cumulative distributions

 

distribution

current distribution

fiscal year to date

for the fiscal year to date

Net Investment Income

0.00439

13%

0.05807

 

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

0.02936

87%

0.07698

 

57%

 

Other Capital Source

 

 

Total (per common share)

0.03375

100%

0.13505

 

100%

 

Average annual total return (in relation to NAV) for the five years ended 1-31-2026

 

 

3.87%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 1-31-2026

 

8.02%

 

Cumulative total return (in relation to NAV) for the fiscal year through 1-31-2026

 

 

1.57%

 

Cumulative fiscal year distributions as a percentage of NAV as of 1-31-2026

 

 

2.67%

 

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.

MMTSN-0226

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

January-2026

Distribution amount per share

$0.03369

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 1st. All amounts are expressed per common share.

 

Current

% Breakdown of

Total cumulative

% Breakdown of the total

 

distributions for the

cumulative distributions

 

distribution

current distribution

fiscal year to date

for the fiscal year to date

Net Investment Income

0.02224

66%

0.05875

58%

 

 

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

0.01145

34%

0.04255

42%

 

 

Other Capital Source

 

 

Total (per common share)

0.03369

100%

0.10130

100%

 

 

Average annual total return (in relation to NAV) for the five years ended 12-31-2025

 

 

3.64%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 12-31-2025

8.01%

 

Cumulative total return (in relation to NAV) for the fiscal year through 12-31-2025

 

 

0.85%

 

Cumulative fiscal year distributions as a percentage of NAV as of 12-31-2025

 

 

2.01%

 

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.

MMTSN-0126

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

December-2025

Distribution amount per share

$0.03372

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 1st. All amounts are expressed per common share.

 

Current

% Breakdown of

Total cumulative

% Breakdown of the total

 

distributions for the

cumulative distributions

 

distribution

current distribution

fiscal year to date

for the fiscal year to date

Net Investment Income

0.01686

50%

0.03381

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

0.01686

50%

0.03380

50%

 

 

Other Capital Source

 

 

Total (per common share)

0.03372

100%

0.06761

100%

 

 

Average annual total return (in relation to NAV) for the five years ended 11-30-2025

 

 

3.91%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 11-30-2025

7.98%

 

Cumulative total return (in relation to NAV) for the fiscal year through 11-30-2025

 

 

0.52%

 

Cumulative fiscal year distributions as a percentage of NAV as of 11-30-2025

 

 

1.33%

 

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.

MMTSN-1225

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

November-2025

Distribution amount per share

$0.03389

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 1st. All amounts are expressed per common share.

 

Current

% Breakdown of

Total cumulative

% Breakdown of the total

 

distributions for the

cumulative distributions

 

distribution

current distribution

fiscal year to date

for the fiscal year to date

Net Investment Income

0.03389

100%

0.03389

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

0.00000

0%

0.00000

0%

 

 

Other Capital Source

 

 

Total (per common share)

0.03389

100%

0.03389

100%

 

 

Average annual total return (in relation to NAV) for the five years ended 10-31-2025

 

 

4.64%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 10-31-2025

8.01%

 

Cumulative total return (in relation to NAV) for the fiscal year through 10-31-2025

 

 

8.91%

 

Cumulative fiscal year distributions as a percentage of NAV as of 10-31-2025

 

 

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.

MMTSN-1125