Wisconsin
The state of Wisconsin requires both a Withholding Tax ID and a State Unemployment Tax ID, both formats and links to apply are below.
Withholding Tax ID
Link to Apply: https://www.revenue.wi.gov/Pages/Businesses/home.aspx
Agency Contact Info: Secretary of Revenue Department of Revenue Income, Sales, and Excise Tax Division P.O. Box 8902 Madison, WI 53708 (608) 266-2776
Format: 036-##########-##
Applied For: Not Accepted
Unemployment Tax ID
Link to Apply: https://dwd.wisconsin.gov/uitax/
Agency Contact Info: Wisconsin Department of Workforce Development 201 East Washington Avenue P.O. Box 7942 Madison, WI 53707 608-261-6700 Note: The agency will not verbally provide Taxpayer rate information to anyone but the Taxpayer.
Format: ######-000-#
Applied For: Not Accepted
After a new tax ID has been received, please send all documentation showing proof of the tax ID obtained to the Tax Department by submitting a Tax Ticket. Choose "Need to Add Tax Jurisdiction/Obtained Tax ID" from the ticket reason drop down. It's best practice to add new tax ID's before processing payment for employees within the jurisdiction.
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