SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-1A
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 [X]
File No. 2-91229
Pre-Effective Amendment No. [ ]
Post-Effective Amendment No. 27 [X]
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 [X]
File No. 811-4025
Amendment No. 28 [X]
(Check appropriate box or boxes.)
AMERICAN CENTURY MUNICIPAL TRUST
_________________________________________________________________
(Exact Name of Registrant as Specified in Charter)
4500 Main Street, Kansas City, MO 64111
_________________________________________________________________
(Address of Principal Executive Offices) (Zip Code)
Registrant's Telephone Number, including Area Code: (816) 531-5575
David C. Tucker, Esq., 4500 Main Street, Kansas City, MO 64111
_________________________________________________________________
(Name and Address of Agent for Service)
Approximate Date of Proposed Public Offering: October 1, 1999
It is proposed that this filing will become effective (check appropriate box)
[ ] immediately upon filing pursuant to paragraph (b)
[X] on October 1, 1999 pursuant to paragraph (b)
[ ] 60 days after filing pursuant to paragraph (a)(1)
[ ] on (date) pursuant to paragraph (a)(1)
[ ] 75 days after filing pursuant to paragraph (a)(2)
[ ] on (date) pursuant to paragraph (a)(2) of rule 485.
If appropriate, check the following box:
[X] This post-effective amendment designates a new effective date for a
previously filed post-effective amendment.
- --------------------------------------------------------------------------------
This filing is being made to extend the date of effectiveness of the
Registrant's Post-Effective Amendment No. 26 to October 1, 1999. The
Post-Effective Amendment originally requested effectiveness as of September 7,
1999.
The following documents are hereby incorporated by reference:
* Prospectuses for each of the funds under the issuer American Century
Municipal Trust, filed pursuant to Rule 485(a) on July 8, 1999 (Accession
No. 0000746458-99-000009).
* Statements of Additional Information for American Century Municipal Trust,
filed pursuant to Rule 485(a) on July 8, 1999 (Accession No.
0000746458-99-000009).
* Part C to the Registration Statement of American Century Municipal Trust,
filed pursuant to Rule 485(a) on July 8, 1999 (Accession No.
0000746458-99-000009).
Registrant is extending effectiveness of its Registration Statement in order to
incorporate comments provided to its advisor by the staff of the Commission.
<PAGE>
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933 and the Investment
Company Act of 1940, the Registrant certifies that it meets all the requirements
for effectiveness of this 1933 Post-Effective Amendment No. 27 and 1940 Act
Amendment No. 28 to its Registration Statement pursuant to Rule 485(b)
promogulated under the Securities Act of 1933, as amended, and has duly caused
this Post-Effective Amendment No. 27/Amendment No. 28 to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Kansas City, and
State of Missouri, on the 2nd day of September, 1999.
AMERICAN CENTURY MUNICIPAL TRUST (Registrant)
By: /*/George A. Rio
George A. Rio
President and Principal Executive Officer
Pursuant to the requirements of the Securities Act of 1933, this Post-Effective
Amendment No. 27/Amendment No. 28 has been signed below by the following persons
in the capacities and on the dates indicated.
<TABLE>
<CAPTION>
Date
<S> <C> <C>
*George A. Rio President, Principal Executive September 2, 1999
- --------------------------------- Officer and Principal Financial
George A. Rio Officer
*Maryanne Roepke Vice President, Treasurer and September 2, 1999
- --------------------------------- Principal Accounting Officer
Maryanne Roepke
*James E. Stowers III Trustee, Chairman of the Board September 2, 1999
- ---------------------------------
James E. Stowers III
*William M. Lyons September 2, 1999
- --------------------------------- Trustee
William M. Lyons
*Albert A. Eisenstat Trustee September 2, 1999
- ---------------------------------
Albert A. Eisenstat
*Ronald J. Gilson Trustee September 2, 1999
- ---------------------------------
Ronald J. Gilson
*Myron S. Scholes Trustee September 2, 1999
- ---------------------------------
Myron S. Scholes
*Kenneth E. Scott Trustee September 2, 1999
- ---------------------------------
Kenneth E. Scott
*Isaac Stein Trustee September 2, 1999
- ---------------------------------
Isaac Stein
*Jeanne D. Wohlers Trustee September 2, 1999
- ---------------------------------
Jeanne D. Wohlers
</TABLE>
/s/Charles C.S. Park
*by Charles C.S. Park, Attorney in Fact (pursuant to a Power of Attorney dated
December 18, 1998).
