EX-99.19a-1

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

October-2025

Distribution amount per share

$0.03399

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

0.03331

98%

0.23765

 

59%

 

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

0.00068

2%

0.16515

 

41%

 

Other Capital Source

 

 

Total (per common share)

0.03399

100%

0.40280

 

100%

 

Average annual total return (in relation to NAV) for the five years ended 9-30-2025

 

 

4.65%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 9-30-2025

 

8.01%

 

Cumulative total return (in relation to NAV) for the fiscal year through 9-30-2025

 

 

8.34%

 

Cumulative fiscal year distributions as a percentage of NAV as of 9-30-2025

 

 

7.91%

 

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-1025

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

September-2025

Distribution amount per share

$0.03373

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

0.00000

0%

0.20653

 

56%

 

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

0.03373

100%

0.16228

 

44%

 

Other Capital Source

 

 

Total (per common share)

0.03373

100%

0.36881

 

100%

 

Average annual total return (in relation to NAV) for the five years ended 8-31-2025

 

 

4.20%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 8-31-2025

 

8.00%

 

Cumulative total return (in relation to NAV) for the fiscal year through 8-31-2025

 

 

6.95%

 

Cumulative fiscal year distributions as a percentage of NAV as of 8-31-2025

 

 

7.29%

 

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-0925

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

August-2025

Distribution amount per share

$0.03352

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

0.03352

100%

0.20775

 

62%

 

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%

0.12733

 

38%

 

Other Capital Source

 

 

Total (per common share)

0.03352

100%

0.33508

 

100%

 

Average annual total return (in relation to NAV) for the five years ended 7-31-2025

 

 

4.05%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 7-31-2025

 

7.98%

 

Cumulative total return (in relation to NAV) for the fiscal year through 7-31-2025

 

 

5.78%

 

Cumulative fiscal year distributions as a percentage of NAV as of 7-31-2025

 

 

6.65%

 

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-0825

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

July-2025

Distribution amount per share

$0.03334

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

0.00000

0%

0.13872

 

46%

 

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

0.03334

100%

0.16284

 

54%

 

Other Capital Source

 

 

Total (per common share)

0.03334

100%

0.30156

 

100%

 

Average annual total return (in relation to NAV) for the five years ended 6-30-2025

 

 

4.92%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 6-30-2025

 

7.94%

 

Cumulative total return (in relation to NAV) for the fiscal year through 6-30-2025

 

 

5.03%

 

Cumulative fiscal year distributions as a percentage of NAV as of 6-30-2025

 

 

5.98%

 

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-0725

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

June-2025

Distribution amount per share

$0.03302

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

0.03038

92%

0.14216

 

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

0.00264

8%

0.12606

 

47%

 

Other Capital Source

 

 

Total (per common share)

0.03302

100%

0.26822

 

100%

 

Average annual total return (in relation to NAV) for the five years ended 5-31-2025

 

 

4.91%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 5-31-2025

 

7.96%

 

Cumulative total return (in relation to NAV) for the fiscal year through 5-31-2025

 

 

3.06%

 

Cumulative fiscal year distributions as a percentage of NAV as of 5-31-2025

 

 

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.

MMTSN-0625

MFS® Multimarket Income Trust

P.O. Box 43078

Providence, RI 02940-3078

Notice to shareholders Source of distribution

Distribution period

May-2025

Distribution amount per share

$0.03274

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

0.00000

0%

0.10819

 

46%

 

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

0.03274

100%

0.12701

 

54%

 

Other Capital Source

 

 

Total (per common share)

0.03274

100%

0.23520

 

100%

 

Average annual total return (in relation to NAV) for the five years ended 4-30-2025

 

 

5.52%

 

Annualized current distribution rate expressed as a percentage of month end NAV as of 4-30-2025

 

7.94%

 

Cumulative total return (in relation to NAV) for the fiscal year through 4-30-2025

 

 

1.71%

 

Cumulative fiscal year distributions as a percentage of NAV as of 4-30-2025

 

 

4.75%

 

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-0525