2024 MAR Filing Deadline Today – June 10, 2024

June 10, 2024

To: Statutory Assessors
Public Assessors
Cc: Municipal Clerks

The Wisconsin Department of Revenue (DOR), State and Local Finance Division would like to remind you that the 2024 filing deadline for the Municipal Assessment Report (MAR) is today, June 10, 2024.​

Filing Impact of Act 12

  • Reminder – reporting personal property now assessed as real estate due to Act 12 should be accounted for on your 2024 MAR
  • Do not report this value change in new construction or revaluation

Filing Information

  • Due date – June 10, 2024, by 11:59 p.m.
  • Assessor must e-file through MyDORGov
  • Filing instructions – available on our website

MAR Non-filer list

  • Summary of unfiled MAR reports (attached)
    • Report includes non-filers as of 1:00 a.m. today, Monday, June 10, 2024
  • Review the non-filer list to ensure we have received your filing

Non-filed or late-filed forms

If you do not file by 11:59 p.m. today, Monday, June 10, 2024, 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 today, 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.