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

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.