2023 MAR Filing Deadline Today, June 12, 2023

June 12, 2023

To: Statutory Assessors
Public Assessors
Municipal Clerks

The Wisconsin Department of Revenue (DOR) would like to remind you that the 2023 filing deadline for the Municipal Assessment Report (MAR) is today, June 12, 2023.

Filing Information

MAR Non-filer Lists

  • Summary of unfiled MAR reports (attached)
    • Report includes non-filers as of 1:00 a.m. today, Monday, June 12, 2023
  • Review the non-filer list to make sure we received your filing

Non-filed or Late-filed Forms

If you do not file by Monday, June 12, 2023, the following may occur:

  1. Municipal reporting – municipality receives a reduced levy limit due to the lack of new construction information
  2. TID reportingprior 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 12, 2023, 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.