Wisconsin Income Tax Calculator

How to Use This Wisconsin Income Tax Calculator

This Wisconsin income tax calculator estimates your annual state and federal tax liability for 2025 and 2026. Enter your gross income, filing status, and any pre-tax deductions above. Wisconsin has no local income taxes, so there is no locality dropdown — the calculation is entirely state-level and federal.

For a per-paycheck breakdown, use the Wisconsin paycheck calculator. To compare Wisconsin with other states, use the general income tax calculator.

How Wisconsin State Income Tax Works

Wisconsin uses a four-bracket progressive income tax system. The brackets apply to Wisconsin taxable income, which is calculated as:

1. Start with federal AGI — wages, self-employment income, interest, dividends, capital gains minus pre-tax 401(k) and other employer deductions.
2. Apply Wisconsin-specific adjustments — e.g., subtracting Social Security benefits (fully exempt), certain military pay, and federal government bond interest.
3. Subtract the Wisconsin standard deduction — $13,230 (single) / $24,490 (joint) for 2026, subject to phase-outs at higher incomes.
4. Subtract personal exemptions — $700 per filer and $700 per qualifying dependent.
5. Apply the progressive brackets — 3.5% through 7.65%.

Wisconsin Standard Deduction Phase-Out

Wisconsin's standard deduction is unique because it phases out at higher incomes — unlike the federal standard deduction, which is a fixed amount at all income levels. The phase-out works as follows for 2026:

• Single filers: full deduction ($13,230) available below ~$15,660 of Wisconsin income; reduces proportionally above that threshold; eliminated at higher incomes.
• Married filing jointly: full deduction ($24,490) available below ~$22,380; phases out above that amount.

The practical effect: a single filer earning $80,000 may only be able to claim roughly $7,000–$9,000 of the standard deduction rather than the full $13,230, depending on the phase-out calculation. The calculator applies the correct phase-out automatically based on your entered income.

Wisconsin also provides personal exemptions of $700 per filer and $700 per dependent — these are deductions from taxable income and are not subject to phase-out.

FICA Taxes — Social Security and Medicare

FICA is federal and applies to every Wisconsin income earner:

• Social Security: 6.2% on wages up to $176,100 (2025) or $184,500 (2026). No further withholding once you hit the wage base.
• Medicare: 1.45% on all wages with no cap.
• Additional Medicare: 0.9% on wages above $200,000 (single) or $250,000 (married jointly) — employee only, no employer match.

Step-by-Step Example — $100,000 Wisconsin Single Filer (2026)

1. Gross wages: $100,000
2. Federal standard deduction: −$16,100 → federal taxable income: $83,900. Federal income tax: ~$13,430.
3. FICA: 7.65% × $100,000 = $7,650.
4. Wisconsin standard deduction: phases out at this income level — assume approximately $6,000 effective deduction.
5. Wisconsin taxable income: $100,000 − $6,000 − $700 exemption = $93,300. WI tax: 3.5% × $15,110 + 4.4% × $36,840 + 5.3% × $41,350 = $529 + $1,621 + $2,192 = ~$4,342.
6. Total taxes: $13,430 + $7,650 + $4,342 = $25,422
7. Annual net income: $100,000 − $25,422 = $74,578

Retirement Income and Wisconsin Taxes

Wisconsin's treatment of retirement income is relatively retiree-friendly for Social Security recipients, though private retirement account distributions are taxable.

• Social Security — fully exempt: Wisconsin does not tax Social Security benefits at the state level, regardless of income level. This full exemption applies to filers at any income — unlike some states that phase in Social Security taxation at higher incomes. A retiree receiving $30,000/year in Social Security saves roughly $900–$1,590 per year in Wisconsin state tax compared to a state that fully taxes Social Security.
• Wisconsin Retirement System (WRS) pensions — generally exempt: Government employee retirement income from the Wisconsin Retirement System (WRS) — covering state and local government employees — is generally exempt from Wisconsin income tax. This is a significant benefit for retired teachers, state workers, and municipal employees in Wisconsin.
• Railroad Retirement — fully exempt: Federal Railroad Retirement Act benefits are fully exempt from Wisconsin income tax, consistent with their federal exclusion from state income tax.
• Military retirement pay — fully exempt: Wisconsin fully exempts military retirement income from state income tax, making it attractive for retired veterans.
• 401(k), IRA, and private pension distributions — taxable: Distributions from traditional 401(k) plans, traditional IRAs, and most private employer pensions are taxable in Wisconsin at the regular bracket rates (3.5%–7.65%). Wisconsin does not offer a blanket private retirement income exclusion. Most retirees with significant 401(k) withdrawals fall in the 5.3% bracket.

Wisconsin Form 1 is used to file the annual Wisconsin income tax return, due April 15 — the same as the federal deadline. An automatic extension to October 15 is available, but taxes owed must be paid by April 15.

Wisconsin Tax Credits and Deductions

Wisconsin offers several notable credits and deductions that can reduce your annual state tax liability beyond the standard deduction and personal exemptions.

• Wisconsin Earned Income Tax Credit (EITC): Wisconsin offers its own EITC, calculated as a percentage of the federal EITC based on the number of qualifying children. For 2026: up to 4% of the federal EITC for 1 qualifying child, up to 11% for 3 or more qualifying children. While this is a smaller match than some other states, it is refundable — eligible families receive it even if it exceeds their Wisconsin tax liability. Families with multiple children benefit the most from this credit.
• Wisconsin EdVest / Tomorrow's Scholar 529 deduction:Contributions to Wisconsin's EdVest or Tomorrow's Scholar 529 college savings plans are deductible from Wisconsin taxable income, up to $3,860 per beneficiary per taxpayer in 2026 ($1,930 for married filing separately). A family with two children in 529 plans could deduct up to $7,720 from Wisconsin taxable income — saving roughly $409 in state tax at the 5.3% bracket. This is one of the more generous 529 deductions nationally.
• Wisconsin Homestead Credit: Low-to-moderate-income Wisconsin homeowners and renters may qualify for the Homestead Credit, a refundable credit against Wisconsin income tax or property taxes. Particularly valuable for retirees and low-income earners with high housing costs relative to income.
• Retirement income exemptions: As noted above, Social Security, WRS pensions, railroad retirement, and military retirement are all exempt — effectively acting as large income exclusions for qualifying retirees.
• Standard deduction phase-out awareness: Pre-tax contributions to 401(k) and IRA accounts that reduce Wisconsin income also slow the standard deduction phase-out, providing a compounded benefit for earners near the phase-out range.

How to Reduce Your Wisconsin Annual Tax Liability

• Maximize traditional 401(k) contributions— the 2026 limit is $23,500 ($31,000 if 50+). At Wisconsin's 5.3% bracket + 22% federal, every $1,000 contributed saves about $273 in combined income taxes.
• Wisconsin EdVest 529 contributions— one of the most generous 529 deductions nationally: contributions to Wisconsin's EdVest or Tomorrow's Scholar plans are deductible from Wisconsin income up to $3,860 per beneficiary per taxpayer (2026). A family with two children in 529 plans could deduct up to $7,720 from Wisconsin taxable income.
• Health Savings Account (HSA) — $4,300 (self-only) or $8,550 (family) in 2026. Reduces Wisconsin taxable income and avoids FICA when contributed through payroll.
• Understand the standard deduction phase-out — contributions that reduce your Wisconsin AGI (such as 401(k) or IRA contributions) also slow the standard deduction phase-out, providing a double benefit. For earners near the phase-out threshold, each dollar contributed to pre-tax accounts is worth more than just the bracket rate.
• Wisconsin Homestead Credit — low-to-moderate-income Wisconsin homeowners and renters may qualify for the homestead credit, which provides a refundable credit against Wisconsin income tax or property taxes. This is particularly valuable for retirees and low-income earners.

Tax Disclaimer

This calculator provides estimates for informational purposes only. It is not tax advice. Wisconsin state brackets, standard deduction phase-out thresholds, exemption amounts, and federal rules change annually. Consult a qualified Wisconsin-licensed CPA or tax professional for your specific situation.