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Wisconsin State Tax Information

Looking for Wisconsin state tax information? We provide the latest resources on state tax, unemployment, income tax and more.

Wisconsin Department of Revenue

Wisconsin Department of Workforce Development

Withholding Requirements:

  • Register as an employer by clicking here
  • Wisconsin Withholding Exemption Certificate/New Hire Reporting = Form WT-4
  • Withholding Method = formula
  • Supplemental Rate = Add to regular wages for current or preceding period, compute tax on total, and subtract tax withheld on regular wages, or withhold at: As of 4/1/2014

4.0% if annual gross < $10,910
5.84% if annual gross > $10,910 and < $21,820
6.27% if annual gross > $21,820 and < $240,190
7.65% if annual gross > $240,190 and over

Local Taxes


State Unemployment Insurance (SUI):

Reserve ratio formula

Rate schedule D in effect for 2018
Wage base is $14,000 for 2017 and 2018
Contribution rates range from 0.05% to 12.00%
New employers with payroll < $500,000 use 3.05% for 2018
New employers with payroll > $500,000 use 3.25% for 2018
New construction employers with payroll < $500,000 use 3.75% for 2018
New contructions employers with payroll > $500,000 use 3.9% for 2018
All rates include the solvency tax. The solvency tax is assigned to the employer based on their contribution rate.

State Disability Insurance (SDI):


State Labor Laws:

Minimum wage - The Federal minimum wage rate applies.

Termination Pay - Fired/Quit - next regular payday. If fired due to merging, liquidating or otherwise disposing of the business, ceasing business operations in whole or in part, or relocating all or part of the business to another area within or without the state, the employer, or the successors in interest of the employer, shall pay all unpaid wages to the employee at the usual place of payment within 24 hours of the time of separation. Wisconsin Statutes & Annotations � 109.03(2), �109.03(4)

New Hire Reporting:

Employers must report hiring, rehiring, and return to work within 20 days on Form W-4, Wisconsin for WT-4, electronically, by telephone, by internet to:

Wisconsin New Hire Reporting
P.O. Box 14431
Madison, WI 53708-0431
Phone: 888-300-4473
Fax: 800-277-8075

Remit Withholding for Child Support to:

Wisconsin Support Collections Trust Fund
PO Box 74400
Madison, WI 53274-0400
Phone: 877-209-5211

To report online click here

Reciprocal States:

Illinois, Indiana, Kentucky, Michigan

For a Wisconsin paycheck calculation, visit the PaycheckCity Paycheck Calculator. is a free online resource featuring a compilation of research, collaboration and web tools for use by payroll professionals and more including information about Wisconsin state tax, articles, federal tax information and state tax information.

TAX TIDBIT... To correctly calculate withholding near wage base limits, enter your Gross Salary Year-to-date. It's important for an accurate calculation and is usually found on your last pay stub.