Reminder – March 1: Form M-R Filing Deadline Approaching

February 22, 2024


Manufacturers, Tax Professionals

Disregard this reminder if you already filed or requested an extension to file your 2024 M-R form

The Wisconsin Department of Revenue (DOR) would like to remind state-assessed manufacturing property owners of the upcoming March 1 deadline for filing the 2024 Manufacturing Real Estate Return (M-R).


  • Filing deadline - Friday, March 1, 2024
  • No Filing requirement for personal property assessment
    • 2023 Wisconsin Act 12 exempted personal property
    • All "238" Manufacturing Assessment Personal Property accounts (PP) were automatically closed as of December 31, 2023
    • 237" Real Estate (RE) accounts remain open

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 1, 2024 deadline – submit your filing extension request by March 1
    • April 1, 2024 extended due date – if you request an extension by March 1, you have until Monday, 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