<PAGE>
MFS MUNICIPAL SERIES TRUST
500 BOYLSTON STREET o BOSTON o MASSACHUSETTS 02116-3741
617 o 954-5000
August 1, 1996
VIA EDGAR
Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, NW
Washington, DC 20549
Re: MFS Municipal Series Trust (the "Trust") (File No. 2-92915) on
Behalf of MFS Alabama Municipal Bond Fund, MFS Arkansas
Municipal Bond Fund, MFS California Municipal Bond Fund, MFS
Florida Municipal Bond Fund, MFS Georgia Municipal Bond Fund,
MFS Maryland Municipal Bond Fund, MFS Massachusetts Municipal
Bond Fund, MFS Mississippi Municipal Bond Fund, MFS New York
Municipal Bond Fund, MFS North Carolina Municipal Bond Fund,
MFS Pennsylvania Municipal Bond Fund, MFS South Carolina
Municipal Bond Fund, MFS Tennessee Municipal Bond Fund, MFS
Virginia Municipal Bond Fund, MFS West Virginia Municipal Bond
Fund and MFS Municipal Income Fund
Ladies and Gentlemen:
Pursuant to Rule 497(j) under the Securities Act of 1933, as amended,
please accept this letter as certification that the Prospectuses and Statements
of Additional Information for MFS Municipal Series Trust that would have been
filed under paragraph (c) of Rule 497 do not differ from those contained in
Post-Effective Amendment No. 29 (the "Amendment") to the Trust's Registration
Statement on Form N-1A. The Amendment was filed electronically on July 29, 1996.
Please call Karen M. Ray at (617) 954-5801 or (800) 343-2829 with any
questions you may have.
Very truly yours,
JAMES R. BORDEWICK, JR.
James R. Bordewick, Jr.
Assistant Secretary
JRB/bjn