Tax Filing Extensions For Paper and Electronically Submitted Returns

The due dates for filing and making payments for certain 2019 income/franchise tax returns have changed, including due dates for certain estimated tax payments for tax year 2020. The documents on this web page may not reflect the new due dates. For information on the new filing and payment due dates, see the article Wisconsin Tax Return Due Dates and Payments.

Applicable Laws and Rules

This document provides statements or interpretations of the following laws and regulations enacted as of October 22, 2019: Sections 71.03, 71.09, 71.24, 71.29, 71.44, 71.775, 73.03 and 77.58, Wis. Stats., secs. Tax 2.88 and 2.96, Wis. Adm. Code, and 26 U.S. Code §§ 7508 and 7508A.

Laws enacted and in effect after October 22, 2019, new administrative rules, and court decisions may change the interpretations in this document. Guidance issued prior to October 22, 2019, that is contrary to the information in this document is superseded by this document, pursuant to sec. 73.16(2)(a), Wis. Stats.


MS 5-77
Customer Service Bureau
PO Box 8949
Madison, WI 53708-8949
Phone: (608) 266-2772
Fax: (608) 267-1030
Email additional questions to

Guidance Document Number: 100211

October 22, 2019