1099 Tax Calculator Wisconsin 2026
Wisconsin has 4 graduated income tax brackets ranging from 3.5% to 7.65%. The top 7.65% rate kicks in at $323,290 (single) or $431,060 (married filing jointly). Self-employed workers in Wisconsin owe state tax in addition to federal income tax (10-37%) and 15.3% self-employment tax. Use the calculator below to estimate your full 2026 tax liability.
Net income after business expenses
Enter your income to see your tax breakdown
How Wisconsin taxes self-employment income
Wisconsin has graduated income tax brackets with a top rate of 7.65%.
Wisconsin has 4 brackets with a top rate of 7.65% kicking in at relatively high income ($323K single / $431K MFJ). Standard deduction phases out at higher incomes (~$132K single / $155K MFJ) — not modeled.
Federal tax also applies
Regardless of state, all 1099 contractors and self-employed workers in Wisconsin owe federal income tax and self-employment tax. SE tax is 15.3% on net earnings (12.4% Social Security up to $184,500 in 2026, plus 2.9% Medicare with no cap). Federal income tax follows the standard bracket structure (10-37%).
The calculator above includes federal, SE, and Wisconsin state tax in one estimate, and breaks down quarterly estimated payments due April 15, June 15, September 15, 2026, and January 15, 2027.