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Find your Wisconsin tax account info

Income tax withholding

If you've run payroll in Wisconsin previously, you can find your Withholding Account Number on the form WT-6 withholding coupon or on the welcome letter labelled "Filing Number" sent by the WI DOR. If you're unsure, you should call the agency at (608) 266-2776.

Unemployment tax

You can find your Employer UI Account Number on the latest tax rate notice or Quarterly Wage Report (Form UCT-101) sent to you by the WI DWD. You can also call the agency at (608) 261-6700. 

Unemployment tax rate

Business that have previously run payroll in WI can find their Unemployment Insurance Tax Rate on your most recent tax notice from the DWD. Please only enter in the total rate, which generally ranges from 0%–12%. If you're unsure of your rate you can call the agency at (608) 261-6700.