2021 MAR – Assessor Filing Deadline Today

June 14, 2021

To: Statutory Assessors, Public Assessors, and Municipal Clerks

The Wisconsin Department of Revenue (DOR) would like to remind assessors that the 2021 filing deadline for the reports listed below is today, June 14, 2021.

Filing Information

MAR Non-filer list

  • Attached is a summary of the MAR reports that have not been filed
    • Report includes non-filers as of 4:00 a.m. this morning, Monday, June 14, 2021
  • Review the non-filer list to make sure we received your filing

Non-filed or late-filed forms

If you do not file by today, Monday, June 14, 2021, the following may occur:

  1. Municipal reporting – municipality receives a reduced levy limit due to the lack of new construction information
  2. TID reporting prior year's non-manufacturing full value is certified for the current year. This may result in less tax increment dollars available to the municipality.

Note: If you do not file a MAR by June 14, 2021, DOR's Equalization Bureau will file a formal complaint against your certification with the Office of Technology & Assessment Services, requesting a review and possible revocation of your assessor certification under state law (sec. 73.09(7), Wis. Stats.).


Contact the district office in your area.