0000900422 2026-11-05 2026-11-05 0000900422 dei:BusinessContactMember 2026-11-05 2026-11-05 0000900422 true POS EX Franklin Municipal Opportunities Trust 100 Federal Street Boston MA 02110 617 292-1000 Jane E. Trust One Madison Avenue 17th Floor New York NY 10010 false true No false This Post-Effective Amendment No. 1 to the Registration Statement on Form N-2 (File Nos. 333-297623 and 811-07626) of Franklin Municipal Opportunities Trust (the “Registration Statement”) is being filed pursuant to Rule 462(d) under the Securities Act of 1933, as amended (the “Securities Act”), solely for the purpose of filing exhibits to the Registration Statement. Accordingly, this Post-Effective Amendment No. 1 consists only of a facing page, this explanatory note and Part C of the Registration Statement on Form N-2 setting forth the exhibits to the Registration Statement. This Post-Effective Amendment No. 1 does not modify any other part of the Registration Statement. Pursuant to Rule 462(d) under the Securities Act, this Post-Effective Amendment No. 1 shall become effective immediately upon filing with the Securities and Exchange Commission. The contents of the Registration Statement are hereby incorporated by reference.