Ad Valorem filing deadlines approaching

​April 28, 2021

To: Gross Revenue Taxpayers, Ad Valorem Taxpayers


The Wisconsin Department of Revenue (DOR) would like to remind you of the upcoming filing deadlines.

Reports due by May 3, 2021

  • AC-001 Airline
  • RA-001 Railroad
  • PI-001 Oil Pipeline
  • PF-001 Gas Pipeline
  • CR-800 Conservation/Regulation
  • MP-800 Association of Municipal Electrics

Note: If you need to request an extension, see below.

To request an extension

  1. Visit the appropriate forms page on our website. To request an extension, click "Extension" underneath the list of forms.
  2. When requesting the extension, enter the file code located in the upper right corner of the May or November billing notice
  3. Print the confirmation email after you submit the request

Note: DOR will apply a non-appealable late filing penalty to all reports filed after the due date with no extension.

Questions?

To avoid a delayed response, contact us at utility@wisconsin.gov.