#We're making some changes to this help center. If you're unable to find what you're looking for, please try again in a few minutes. ×

How do I file an amended Wisconsin state return?

Quick Links:

Wisconsin Amendment Guide on Credit Karma Tax

When Do I need to file my WI amendment?

How do I file?

What to expect when I file an amended return?

Mailing your WI state amendment

How long does it take?

Wisconsin Department of Revenue contact information

When do I need to file my WI amendment?
If you need to make any adjustments to your Wisconsin state return or if the changes in your federal return affected your state return, you may need to file an amended return. You have 4 years from the original due date to file an amended Wisconsin income tax return when requesting a refund.

How do I file a Wisconsin Amended Individual Income Tax Return?

What to expect when I file an amended return?
When there is a change in your income, the following Wisconsin items may be affected:

  • Itemized deduction credit
      • Medical and dental expense limitation
      • Standard deduction
  • Homestead credit
  • Farmland preservation credit (from Schedule FC)
  • Married couple credit
  • Working families tax credit
  • Earned income credit
  • Tuition and fee expenses subtraction
  • Medical care insurance subtraction

Mailing your WI state amendment:

To amend your WI state return, you will need to mail an amended paper return

  • If you are due a refund, or no taxes are due, mail your return to:

              Wisconsin Department of Revenue
              P.O. Box 59
              Madison, WI 53785-0001

  • If taxes are due:

              Wisconsin Department of Revenue
              P.O. Box 268
              Madison, WI 53790-0001


  • If a Homestead Credit was claimed on your return:

             Wisconsin Department of Revenue
             P.O. Box 8949, MS 5-77
             Madison, WI 53708-8949

How long does it take?
You can track your return via the State of Wisconsin Department of Revenue. It may take 3 weeks or longer for tracking information to be available.

Wisconsin Department of Revenue contact information

  • Phone: (608) 266-2486
  • Fax: (608) 267-1030
  • Mailing Address:

Customer Service Bureau
PO Box 8949, MS 5-77
Madison, WI 53708-8949

Still have questions? Contact member support

Continue your tax filing

Was this article helpful?