Wisconsin Estimated Tax Payments Calculator

2026 rules

Enter your expected income to see what to send Wisconsin and the IRS each quarter.

Your numbers

Filing status

Self-employment or business profit

W-2 wages

Other income (interest, dividends, gains, rental)

Wisconsin tax withheld from paychecks

Last year's Wisconsin tax (total on your return)

Leave at 0 to use this year's estimate only.

Federal tax withheld

Last year's federal tax (Form 1040 line 24)

Result

Wisconsin quarterly payment$636

Projected federal tax (incl. SE tax)$17,147
Projected Wisconsin tax$2,825
Wisconsin amount to pay in estimates$2,542
Wisconsin payment 1 · Apr 15, 2026$636
Wisconsin payment 2 · Jun 15, 2026$636
Wisconsin payment 3 · Sep 15, 2026$636
Wisconsin payment 4 · Jan 15, 2027$636
Federal amount to pay in estimates$15,433
Federal payment · Apr 15, 2026$3,858
Federal payment · Jun 15, 2026$3,858
Federal payment · Sep 15, 2026$3,858
Federal payment · Jan 15, 2027$3,858
First payment, state and federal$4,494

Wisconsin at a glance

Due dates: Apr 15, 2026, Jun 15, 2026, Sep 15, 2026, Jan 15, 2027
Rates: Wisconsin taxes income at 4 rates from 3.50% to 7.65%.

Wisconsin tax brackets for 2026

Single (taxable income)
Rate	Taxable income
3.50%	$0 – $15,110
4.40%	$15,110 – $51,950
5.30%	$51,950 – $332,720
7.65%	over $332,720

Married filing jointly
Rate	Taxable income
3.50%	$0 – $20,150
4.40%	$20,150 – $69,260
5.30%	$69,260 – $443,630
7.65%	over $443,630

Questions

When are Wisconsin estimated tax payments due for 2026?

Apr 15, 2026, Jun 15, 2026, Sep 15, 2026, Jan 15, 2027.

How much do I need to pay to avoid a penalty?

This calculator uses the federal safe harbor: 90% of this year's tax, or 100% of last year's (110% if your AGI is over $150,000), less withholding. A few states use a different share of the current year's tax, so check the Wisconsin estimated-tax instructions too.