Payroll Wisconsin, Unique Aspects of Wisconsin Payroll Law and Practice

isconsin State Agency that oversees the collection and reporting of State income taxes deducted from payroll checks is:Department of RevenueIncome, Sales, Inheritance and Excise Tax DivisionP.O. Box 89102135 Rimrock Rd.Madison, WI 53713(608) 266-2776www.dor.state.wi.us/Wisconsin allows you to use the Federal W-4 form or the "WT-4, Employee's Wisconsin Withholding Exemption Certificate/New Hire Reporting" to calculate state income tax withholding.Not all states allow salary reductions made under Section 125 cafeteria plans or 401(k) to be treated in the same manner as the IRS code allows.In Wisconsin cafeteria plans are not taxable for income tax calculation; not taxable for unemployment insurance purposes. 401(k) plan deferrals are not taxable for income taxes; taxab View the rest of this article