​April 21, 2022

To: Gross Revenue Taxpayers, Ad Valorem Taxpayers

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

Reports due by May 2, 2022 (or extension request due)

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

To request an extension

1. Visit the appropriate forms page on our website
2. Click "Extension" underneath the list of forms
3. Enter the file code located in the upper right corner of the May or November billing notice
4. 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?

Contact us at utility@wisconsin.gov.