SECTION 906 CERTIFICATION

Pursuant to 18 U.S.C.ss.  1350, the undersigned officers of Federated Short-Term
Municipal Trust(the "Registrant"), hereby certify, to the best of our knowledge,
that the  Registrant's  Report on Form N-CSR for the period  ended  December 31,
2004 (the  "Report")  fully complies with the  requirements  of Section 13(a) or
15(d),  as  applicable,  of the Securities and Exchange Act of 1934 and that the
information  contained in the Report fairly presents,  in all material respects,
the financial condition and results of operations of the Registrant.


Dated: February 18, 2005

/s/ John B. Fisher

Title: President, Principal Executive Officer



Dated: February 18, 2005

/s/ Richard J. Thomas

Title: Treasurer, Principal Financial Officer

This certification is being furnished solely pursuant to 18 U.S.C.ss. 1350 and
is not being filed as part of the Report or as a separate disclosure document.