MASSACHUSETTS FINANCIAL SERVICES COMPANY
500 BOYLSTON STREET
BOSTON, MA 02116
617/954-5000
February 28, 1995
VIA EDGAR
Securities and Exchange Commission
450 Fifth Street, NW
Washington, DC 20549
Re: MFS Municipal Income Fund (the "Fund"), a Series of
MFS Municipal Series Trust (the "Trust"); File Nos.
2-92915 and 811-4096
Ladies and Gentlemen:
Pursuant to Rule 497(j) under the Securities Act of 1933, as
amended, please accept this letter as certification that the
prospectus and statement of additional information for the
Fund does not differ from that contained in Post-Effective
Amendment No. 26 (the "Amendment") to the Trust's
Registration Statement on Form N-1A. This Amendment was
filed electronically on February 22, 1995.
Please call the undersigned at (617) 954-5801 or (800) 343-
2829 Ext. 5801 with any questions you may have.
Very truly yours,
KAREN M. BATES
Karen M. Bates
Corporate/Securities Board/Liaison
Specialist
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