Where to File - Mail your return to the Wisconsin Department of Revenue at:
If tax is due: PO Box 268, Madison, WI 53790-0001
If refund or no tax due: PO Box 59, Madison, WI 53785-0001
If homestead credit claimed: PO Box 34, Madison, WI 53786-0001
WISCONSIN DEPARTMENT OF REVENUE
Electronic Filing Unit
PO Box 8949
Madison, WI 53708-8949
Income Phone: (608) 264-6886
Sales Phone: (608) 266-2776
Fax: (608) 267-1030
Email additional questions to DORElectronicFiling@revenue.wi.gov