Wisconsin Tax Calendar

Date	Events	Notes
April 1	Assessed Values Issued	N/A
May 8	Appeal Deadline	Varies by jurisdiction. 30 days from notice of assessment
November 15	Tax Bills Issued	N/A
January 31	Tax Bills Due	January 31st of the following year. 1st half installment due
July 31	Tax Bills Due	July 31st of the following year. 2nd half installment due

Date	Events	Notes
April 1	Assessed Values Issued	N/A
May 1	Appeal Deadline	N/A
March 1	Rendition Date	State grants a 30-day filing extension upon manufacturing request. Only available to state-assessed manufacturer
December 1	Tax Bill Issued	N/A
January 31	Tax Bill Due	January 31st of the following year. Single payment due