Wisconsin State Income Tax Calculator

Use our Wisconsin income tax calculator to estimate your 2024 or 2023 state tax liability. Enter your Wisconsin taxable income and filing status to see tax owed, marginal rate, and effective rate.

Wisconsin State Income Tax Calculator

Estimate Wisconsin state income tax for 2024 or 2023. Enter your Wisconsin taxable income and filing status to see tax owed, marginal rate, and effective tax rate—optimized for speed, accessibility, and accuracy.

Calculator

Select filing status
Single
Married Filing Jointly
Married Filing Separately
Head of Household

Results

Tax year —
Filing status —
Taxable income $0.00
Gross WI tax (before credits) $0.00
Credits applied $0.00
Net WI tax (after credits) $0.00
Marginal rate —
Effective rate —
After-tax income $0.00

Data Source and Methodology

Authoritative data: Wisconsin Department of Revenue, “Individual Income Tax Rates and Brackets” (Tax Years 2023–2024). See: Official WI DOR Tax Rates.

All brackets and rates used here reflect those published by the Wisconsin Department of Revenue for the selected year.

Tutti i calcoli si basano rigorosamente sulle formule e sui dati forniti da questa fonte.

The Formula Explained

Progressive tax by brackets

Tax = \sum_{i=1}^{n} \left( r_i \cdot \max\{0,\ \min(I,\ U_i) - L_i \} \right)

Where I is taxable income, r_i is the marginal rate for bracket i, L_i and U_i are the lower and upper bounds of bracket i (with U_n = \infty).

\text{Marginal Rate} = r_k \quad \text{for the bracket } k \text{ in which } I \text{ falls}

\text{Effective Rate} = \dfrac{\text{Tax}}{I} \quad (\text{defined as } 0 \text{ if } I=0)
        
\text{Net Tax} = \max\left(0,\ \text{Tax} - \text{Credits}\right), \qquad
\text{After-Tax Income} = I - \text{Net Tax}

Glossary of Inputs and Outputs

  • Filing status: Your filing category (Single, Married Filing Jointly, Married Filing Separately, Head of Household). Brackets differ by status.
  • Tax year: The year whose official Wisconsin brackets are applied.
  • Wisconsin taxable income: Income after Wisconsin-specific additions, subtractions, and deductions.
  • Estimated credits: Nonrefundable Wisconsin credits you plan to claim; subtracted from gross tax.
  • Gross WI tax: Tax calculated from brackets before credits.
  • Net WI tax: Gross tax minus credits (not below $0).
  • Marginal rate: The rate that applies to your last dollar of taxable income.
  • Effective rate: Net WI tax divided by taxable income.
  • After-tax income: Taxable income minus net WI tax.

How It Works: A Step-by-Step Example

Scenario: Tax year 2024, Filing status = Single, Wisconsin taxable income I = $65,000, Credits = $200.

  1. Apply brackets (Single 2024): 3.5% up to $13,810; 4.4% $13,810–$27,630; 5.3% $27,630–$304,170; 7.65% above.
  2. Compute bracket portions:
    • 3.5% on $13,810 → $483.35
    • 4.4% on $13,820 → $608.08
    • 5.3% on $65,000 − $27,630 = $37,370 → $1,980.61
    Total gross tax ≈ $3,072.04
  3. Subtract credits: $3,072.04 − $200 = $2,872.04 (net WI tax)
  4. Marginal rate = 5.3% (because $65,000 falls in the third bracket)
  5. Effective rate ≈ $2,872.04 / $65,000 ≈ 4.42%
  6. After-tax income ≈ $65,000 − $2,872.04 = $62,127.96

Numbers rounded to the nearest cent. The example mirrors the LaTeX formula above.

Frequently Asked Questions (FAQ)

Does this include federal and payroll (FICA) taxes?

No. This calculator estimates Wisconsin state income tax only. Federal income tax, Social Security, and Medicare are not included.

What if I only know my gross salary?

Wisconsin taxable income differs from gross salary due to state-specific adjustments and deductions. For a paycheck-level estimate, use a paycheck calculator and the state’s withholding tables.

Why is my effective rate lower than my marginal rate?

Wisconsin uses progressive brackets. Only the top portion of your income is taxed at your marginal rate; earlier portions are taxed at lower rates.

Are credits refundable here?

No. The tool subtracts nonrefundable credits from your gross tax, never below zero.

Which tax years are supported?

2024 and 2023. We update the tool when the Department of Revenue publishes new official values.

How precise is this estimate?

It applies official brackets to your provided Wisconsin taxable income. Your final return may differ based on additional adjustments, credits, and rounding rules.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
Progressive tax by brackets Tax = \sum_{i=1}^{n} \left( r_i \cdot \max\{0,\ \min(I,\ U_i) - L_i \} \right) Where I is taxable income, r_i is the marginal rate for bracket i, L_i and U_i are the lower and upper bounds of bracket i (with U_n = \infty). \text{Marginal Rate} = r_k \quad \text{for the bracket } k \text{ in which } I \text{ falls} \text{Effective Rate} = \dfrac{\text{Tax}}{I} \quad (\text{defined as } 0 \text{ if } I=0) \text{Net Tax} = \max\left(0,\ \text{Tax} - \text{Credits}\right), \qquad \text{After-Tax Income} = I - \text{Net Tax}
Variables and units
  • T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Full original guide (expanded)

Wisconsin State Income Tax Calculator

Estimate Wisconsin state income tax for 2024 or 2023. Enter your Wisconsin taxable income and filing status to see tax owed, marginal rate, and effective tax rate—optimized for speed, accessibility, and accuracy.

Calculator

Select filing status
Single
Married Filing Jointly
Married Filing Separately
Head of Household

Results

Tax year —
Filing status —
Taxable income $0.00
Gross WI tax (before credits) $0.00
Credits applied $0.00
Net WI tax (after credits) $0.00
Marginal rate —
Effective rate —
After-tax income $0.00

Data Source and Methodology

Authoritative data: Wisconsin Department of Revenue, “Individual Income Tax Rates and Brackets” (Tax Years 2023–2024). See: Official WI DOR Tax Rates.

All brackets and rates used here reflect those published by the Wisconsin Department of Revenue for the selected year.

Tutti i calcoli si basano rigorosamente sulle formule e sui dati forniti da questa fonte.

The Formula Explained

Progressive tax by brackets

Tax = \sum_{i=1}^{n} \left( r_i \cdot \max\{0,\ \min(I,\ U_i) - L_i \} \right)

Where I is taxable income, r_i is the marginal rate for bracket i, L_i and U_i are the lower and upper bounds of bracket i (with U_n = \infty).

\text{Marginal Rate} = r_k \quad \text{for the bracket } k \text{ in which } I \text{ falls}

\text{Effective Rate} = \dfrac{\text{Tax}}{I} \quad (\text{defined as } 0 \text{ if } I=0)
        
\text{Net Tax} = \max\left(0,\ \text{Tax} - \text{Credits}\right), \qquad
\text{After-Tax Income} = I - \text{Net Tax}

Glossary of Inputs and Outputs

  • Filing status: Your filing category (Single, Married Filing Jointly, Married Filing Separately, Head of Household). Brackets differ by status.
  • Tax year: The year whose official Wisconsin brackets are applied.
  • Wisconsin taxable income: Income after Wisconsin-specific additions, subtractions, and deductions.
  • Estimated credits: Nonrefundable Wisconsin credits you plan to claim; subtracted from gross tax.
  • Gross WI tax: Tax calculated from brackets before credits.
  • Net WI tax: Gross tax minus credits (not below $0).
  • Marginal rate: The rate that applies to your last dollar of taxable income.
  • Effective rate: Net WI tax divided by taxable income.
  • After-tax income: Taxable income minus net WI tax.

How It Works: A Step-by-Step Example

Scenario: Tax year 2024, Filing status = Single, Wisconsin taxable income I = $65,000, Credits = $200.

  1. Apply brackets (Single 2024): 3.5% up to $13,810; 4.4% $13,810–$27,630; 5.3% $27,630–$304,170; 7.65% above.
  2. Compute bracket portions:
    • 3.5% on $13,810 → $483.35
    • 4.4% on $13,820 → $608.08
    • 5.3% on $65,000 − $27,630 = $37,370 → $1,980.61
    Total gross tax ≈ $3,072.04
  3. Subtract credits: $3,072.04 − $200 = $2,872.04 (net WI tax)
  4. Marginal rate = 5.3% (because $65,000 falls in the third bracket)
  5. Effective rate ≈ $2,872.04 / $65,000 ≈ 4.42%
  6. After-tax income ≈ $65,000 − $2,872.04 = $62,127.96

Numbers rounded to the nearest cent. The example mirrors the LaTeX formula above.

Frequently Asked Questions (FAQ)

Does this include federal and payroll (FICA) taxes?

No. This calculator estimates Wisconsin state income tax only. Federal income tax, Social Security, and Medicare are not included.

What if I only know my gross salary?

Wisconsin taxable income differs from gross salary due to state-specific adjustments and deductions. For a paycheck-level estimate, use a paycheck calculator and the state’s withholding tables.

Why is my effective rate lower than my marginal rate?

Wisconsin uses progressive brackets. Only the top portion of your income is taxed at your marginal rate; earlier portions are taxed at lower rates.

Are credits refundable here?

No. The tool subtracts nonrefundable credits from your gross tax, never below zero.

Which tax years are supported?

2024 and 2023. We update the tool when the Department of Revenue publishes new official values.

How precise is this estimate?

It applies official brackets to your provided Wisconsin taxable income. Your final return may differ based on additional adjustments, credits, and rounding rules.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
Progressive tax by brackets Tax = \sum_{i=1}^{n} \left( r_i \cdot \max\{0,\ \min(I,\ U_i) - L_i \} \right) Where I is taxable income, r_i is the marginal rate for bracket i, L_i and U_i are the lower and upper bounds of bracket i (with U_n = \infty). \text{Marginal Rate} = r_k \quad \text{for the bracket } k \text{ in which } I \text{ falls} \text{Effective Rate} = \dfrac{\text{Tax}}{I} \quad (\text{defined as } 0 \text{ if } I=0) \text{Net Tax} = \max\left(0,\ \text{Tax} - \text{Credits}\right), \qquad \text{After-Tax Income} = I - \text{Net Tax}
Variables and units
  • T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Wisconsin State Income Tax Calculator

Estimate Wisconsin state income tax for 2024 or 2023. Enter your Wisconsin taxable income and filing status to see tax owed, marginal rate, and effective tax rate—optimized for speed, accessibility, and accuracy.

Calculator

Select filing status
Single
Married Filing Jointly
Married Filing Separately
Head of Household

Results

Tax year —
Filing status —
Taxable income $0.00
Gross WI tax (before credits) $0.00
Credits applied $0.00
Net WI tax (after credits) $0.00
Marginal rate —
Effective rate —
After-tax income $0.00

Data Source and Methodology

Authoritative data: Wisconsin Department of Revenue, “Individual Income Tax Rates and Brackets” (Tax Years 2023–2024). See: Official WI DOR Tax Rates.

All brackets and rates used here reflect those published by the Wisconsin Department of Revenue for the selected year.

Tutti i calcoli si basano rigorosamente sulle formule e sui dati forniti da questa fonte.

The Formula Explained

Progressive tax by brackets

Tax = \sum_{i=1}^{n} \left( r_i \cdot \max\{0,\ \min(I,\ U_i) - L_i \} \right)

Where I is taxable income, r_i is the marginal rate for bracket i, L_i and U_i are the lower and upper bounds of bracket i (with U_n = \infty).

\text{Marginal Rate} = r_k \quad \text{for the bracket } k \text{ in which } I \text{ falls}

\text{Effective Rate} = \dfrac{\text{Tax}}{I} \quad (\text{defined as } 0 \text{ if } I=0)
        
\text{Net Tax} = \max\left(0,\ \text{Tax} - \text{Credits}\right), \qquad
\text{After-Tax Income} = I - \text{Net Tax}

Glossary of Inputs and Outputs

  • Filing status: Your filing category (Single, Married Filing Jointly, Married Filing Separately, Head of Household). Brackets differ by status.
  • Tax year: The year whose official Wisconsin brackets are applied.
  • Wisconsin taxable income: Income after Wisconsin-specific additions, subtractions, and deductions.
  • Estimated credits: Nonrefundable Wisconsin credits you plan to claim; subtracted from gross tax.
  • Gross WI tax: Tax calculated from brackets before credits.
  • Net WI tax: Gross tax minus credits (not below $0).
  • Marginal rate: The rate that applies to your last dollar of taxable income.
  • Effective rate: Net WI tax divided by taxable income.
  • After-tax income: Taxable income minus net WI tax.

How It Works: A Step-by-Step Example

Scenario: Tax year 2024, Filing status = Single, Wisconsin taxable income I = $65,000, Credits = $200.

  1. Apply brackets (Single 2024): 3.5% up to $13,810; 4.4% $13,810–$27,630; 5.3% $27,630–$304,170; 7.65% above.
  2. Compute bracket portions:
    • 3.5% on $13,810 → $483.35
    • 4.4% on $13,820 → $608.08
    • 5.3% on $65,000 − $27,630 = $37,370 → $1,980.61
    Total gross tax ≈ $3,072.04
  3. Subtract credits: $3,072.04 − $200 = $2,872.04 (net WI tax)
  4. Marginal rate = 5.3% (because $65,000 falls in the third bracket)
  5. Effective rate ≈ $2,872.04 / $65,000 ≈ 4.42%
  6. After-tax income ≈ $65,000 − $2,872.04 = $62,127.96

Numbers rounded to the nearest cent. The example mirrors the LaTeX formula above.

Frequently Asked Questions (FAQ)

Does this include federal and payroll (FICA) taxes?

No. This calculator estimates Wisconsin state income tax only. Federal income tax, Social Security, and Medicare are not included.

What if I only know my gross salary?

Wisconsin taxable income differs from gross salary due to state-specific adjustments and deductions. For a paycheck-level estimate, use a paycheck calculator and the state’s withholding tables.

Why is my effective rate lower than my marginal rate?

Wisconsin uses progressive brackets. Only the top portion of your income is taxed at your marginal rate; earlier portions are taxed at lower rates.

Are credits refundable here?

No. The tool subtracts nonrefundable credits from your gross tax, never below zero.

Which tax years are supported?

2024 and 2023. We update the tool when the Department of Revenue publishes new official values.

How precise is this estimate?

It applies official brackets to your provided Wisconsin taxable income. Your final return may differ based on additional adjustments, credits, and rounding rules.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
Progressive tax by brackets Tax = \sum_{i=1}^{n} \left( r_i \cdot \max\{0,\ \min(I,\ U_i) - L_i \} \right) Where I is taxable income, r_i is the marginal rate for bracket i, L_i and U_i are the lower and upper bounds of bracket i (with U_n = \infty). \text{Marginal Rate} = r_k \quad \text{for the bracket } k \text{ in which } I \text{ falls} \text{Effective Rate} = \dfrac{\text{Tax}}{I} \quad (\text{defined as } 0 \text{ if } I=0) \text{Net Tax} = \max\left(0,\ \text{Tax} - \text{Credits}\right), \qquad \text{After-Tax Income} = I - \text{Net Tax}
Variables and units
  • T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
Formulas

(Formulas preserved from original page content, if present.)

Version 0.1.0-draft
Citations

Add authoritative sources relevant to this calculator (standards bodies, manuals, official docs).

Changelog
  • 0.1.0-draft — 2026-01-19: Initial draft (review required).