Wisconsin
Last Updated September 06, 2017
Agency Information
Wisconsin Department of Revenue – Withholding Tax
Wisconsin Department of Workforce Development, Division of Unemployment Insurance – Unemployment tax
Add to existing company setup
Submit a request to your service team to add WI (withholding) and/or WISUI (unemployment) to your company setup. Please include the below with your request:
Wisconsin Department of Revenue
- Withholding – Withholding account number and Deposit Frequency. If you’re unsure of your deposit frequency or account number you can call the agency at 608-266-2776.
Wisconsin Department of Workforce Development, Division of Unemployment Insurance
- Unemployment – Account Number and Tax rate. This can be found on a Tax Rate Notice or the Quarterly contribution report. If you’re unsure of your tax rate or account number, you can call the agency at 608-261-6700.
Power of Attorney – POA is required, please obtain the prefilled form from your client service representative.
Register a new company
Wisconsin Department of Revenue
Employers can register online at https://www.revenue.wi.gov/Pages/Businesses/New-Business-home.aspx. Follow the prompts to register your business. Once completed you will receive your account number and deposit frequency within 24 hours.
Wisconsin Department of Workforce Development, Division of Unemployment Insurance
Register online at https://unemployment.wisconsin.gov/SUITESPortalWelcome/EmployerPortalWelcome.aspx?target=AccountMain.aspx. Select Create Logon ID under the New Users section of the page. Follow the prompts to register your business. Once completed you will receive your account number and rate.
Third Party Registration and/or Power of Attorney Instructions
Power of Attorney is required, please obtain the prefilled form from your client service representative.