Upcoming Utility Filing Deadlines

April 12, 2021

To: Gross Revenue Taxpayers, Ad Valorem Taxpayers

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

April 15

Report due by April 15, 2021

May 3

Report or Extension Request due by May 3, 2021

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

To request an extension

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

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