MFS Massachusetts Municipal Bond Fund Class B (MBMAX)

Fund Assets	410.11M
Expense Ratio	1.628%
Min. Investment	$1,000
Turnover	12.00%
Dividend (ttm)	0.26
Dividend Yield	2.70%
Dividend Growth	6.41%
Payout Frequency	Monthly
Ex-Dividend Date	Sep 30, 2026

Previous Close	9.57
YTD Return	-4.14%
1-Year Return	-3.35%
5-Year Return	-6.20%
52-Week Low	9.44
52-Week High	10.32
Beta (5Y)	0.30
Holdings	271
Inception Date	Sep 7, 1993

About MBMAX

The MFS Massachusetts Municipal Bond Fund Class B is a mutual fund focused on generating tax-exempt income by investing primarily in municipal bonds issued within Massachusetts. Its primary objective is to seek total return, with a distinct emphasis on income that is exempt from both federal income tax and Massachusetts personal income tax, offering a "double tax-free" benefit particularly valuable to Massachusetts residents. The fund employs a strategy that leverages sector and security selection alongside yield curve analysis, aiming to provide steady, tax-advantaged income while also considering capital appreciation. By investing at least 80% of its assets in Massachusetts municipal debt, the fund plays a crucial role in supporting public projects such as infrastructure, education, and local government services within the state, contributing to the region’s development. With its longstanding history since 1985 and substantial asset base, the fund offers investors a vehicle for accessing the municipal bond market and diversifying their fixed-income exposure while mitigating certain tax obligations.

• Fund Family: MFS
• Category: Muni Massachusetts
• Performance Rating: Below Average
• Risk Rating: High
• Stock Exchange: Nasdaq
• Ticker Symbol: MBMAX
• Share Class: B
• Index: Bloomberg Municipal Bond TR

Performance

MBMAX had a total return of -3.35% in the past year, including dividends. Since the fund's inception, the average annual return has been 2.86%.

Equivalent Funds

These are funds that follow the same index from the other major fund companies.

Symbol	Provider	Name	Expense Ratio
FDMMX	Fidelity	Fidelity Massachusetts Municipal Income Fund	0.44%

Other Share Classes

These are alternative share classes of the same fund, from the same provider.

Symbol	Share Class	Expense Ratio
MPMAX	R6	0.50%
MTALX	I	0.57%
MFSSX	A	0.82%

Dividend History

Ex-Dividend	Amount	Pay Date
Sep 30, 2026	$0.0232	Oct 1, 2026
Aug 31, 2026	$0.0237	Sep 1, 2026
Jul 31, 2026	$0.02276	Aug 3, 2026
Jun 30, 2026	$0.02029	Jul 1, 2026
May 29, 2026	$0.02261	Jun 1, 2026
Apr 30, 2026	$0.02103	May 1, 2026

Data Sources: Tiingo, Twelve Data, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Twelve Data. Several fund data points are also provided by Finnhub.

Last checked:

Oct 16, 2026

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