M-Form Filing Due Date

​February  26, 2021

To: Manufacturers, Real Estate Owners and Preparers


Note:

  • Disregard this reminder if you already filed or requested an extension to file your 2021 M-Forms
  • Annual filing of M-Forms is a statutory requirement for all state-assessed manufacturers

IMPORTANT NOTE TO RECIPIENT: Your email address is associated with the manufacturing account identified in the subject line as an authorized user within the Wisconsin Department of Revenue's (DOR) Manufacturing Assessment System (MAS).

  • If you are the current manufacturing property owner
    • Log in to MAS and review the authorized users for your account(s)
    • To remove a currently authorized user from your account select "Req Auth User Remove" on your Account History page 
  • If you are an authorized user who is no longer associated with this account
    • To request your removal as an authorized user, log in to MAS, select the account identified in the subject line from your list of authorized accounts, and select "Req Auth User Remove" on the Account History page; or
    • Contact the Manufacturing & Utility Bureau District Office in your area for removal

The Wisconsin Department of Revenue (DOR) would like to remind state-assessed manufacturing property owners of the upcoming deadlines for filing 2021 Manufacturing Property Returns (M-Forms).

March 1 – Filing Deadline (2021 Forms M-L, M-P, M-R)

See our website for information on how to download and electronically file (e-file) these forms.

  • Form M-P (PA-750 P) – Manufacturing Personal Property Return
  • Form M-R (PA-750 R) – Manufacturing Real Estate Return
  • Form M-L (PA-750 L) – Leased, Rented, or Loaned Personal Property Return

April 1 – Extended Filing Deadline (Forms M-L, M-P, M-R)

  • March 1, 2021 – submit your filing extension request by March 1, 2021
  • Filing deadline for timely extension requests is April 1, 2021

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.

If you have questions, visit our website or contact the Manufacturing & Utility Bureau District Office in your area.