You can prepare a WI Tax Amendment for the
current tax year here on eFile.com; the amendment
can not be e-filed. After you have prepared the amendment, download the PDF from your My Account, check the box and mail in the form to the address listed below. For other tax years complete the form below before you print, sign and mail in the form.
Option 1: Sign into
your eFile.com account, modify your Return and download/print WI Form 1 (residents)
or 1NPR (nonresidents and part-year residents) under My Account. Check the "Check here if an amended return" box to report that it's a tax amendment.
Option 2: If you don't have an eFile.com account follow the step by step
instruction on how to prepare a tax return/amendment.
Option 3: If you want to do the math on your own paper return then complete, sign
WI Form 1 or
1NPR - Print, Mail the Form to WI Depart. of Revenue to:
Wisconsin Department of Revenue
P.O. Box 8991
Madison WI 53708-8991