Reminder – March 3: Form M-R Filing Deadline Approaching

February 24, 2025

To: Manufacturers​, Tax Professionals

Disregard this reminder if you already filed or requested an extension to file your 2025 M-R form

The Wisconsin Department of Revenue (DOR), State and Local Finance Division would like to remind state-assessed manufacturing property owners of the upcoming March 3 deadline for filing the 2025 Manufacturing Real Estate Return (M-R form).

Important

  • Filing deadline – Monday, March 3, 2025
  • M-R form - located in My Tax Account (MTA)

Account Filing Information

  • Filing status - review the check account filing status instructions if you are unsure whether you already filed, still need to file, or requested an extension
  • Request an extension – you may request a filing extension to April 1
    • March 3, 2025 deadline – submit your filing extension request by March 3
    • April 1, 2025 extended due date – if you request an extension by March 3, you have until Tuesday, April 1 to file
  • Late filing penalty – if you do not file your M-Form or file it late, you will receive a non-filing penalty and lose the right to appeal your assessment. See Late filing penalty.

Questions?