Wisconsin Electronic Filing Program Information for Tax Professionals

​​​​Tax professionals that produce returns for electronic transmission are called Electronic Return Originators (EROs). The Internal Revenue Service (IRS) must approve all EROs.

How to become an authorized Electronic Return Originator (ERO) with the State of Wisconsin

Steps to electronically file Wisconsin income tax returns

​​Contact Us​

Wisconsin Department of Revenue​
Electronic Filing Unit
PO Box 8949
Madison, WI 53708-8949
Income Tax Customer Service Phone: (608) 266-2486
Business Tax Customer Service Phone: (608) 266-2776
Customer Service Fax: (608) 267-1030

February 8, 2021​