Federal Income Tax Calculator (Head of Household)

Authoritative, WCAG-compliant federal income tax calculator for Head of Household filers. Estimate your 2024–2025 U.S. federal tax, taxable income, marginal bracket, and effective tax rate with transparent math and IRS-sourced data.

Federal Income Tax Calculator (Head of Household)

This professional-grade calculator estimates U.S. federal income tax for Head of Household filers. Enter your income, deductions, and dependents to see taxable income, marginal bracket, effective rate, and an estimated Child Tax Credit. Built for clarity, accessibility, and accuracy using official IRS sources.

Results

Adjusted Gross Income (AGI)
$0
Deduction used
$0
Taxable income
$0
Estimated tax before credits
$0
Estimated credits applied
$0
Estimated federal tax (after credits)
$0
Marginal tax rate
—
Effective tax rate (vs. AGI)
—

Bracket breakdown (Head of Household)

Data Source and Methodology

Authoritative sources:

  • IRS Revenue Procedure 2023-34 (Inflation Adjustments for 2024): Direct PDF
  • IRS Revenue Procedure 2024-55 (Inflation Adjustments for 2025): Direct PDF
  • IRS – Federal Income Tax Rates and Brackets: Reference page
  • IRS Publication 501 (Dependents, Standard Deduction, and Filing Information): Reference page
  • IRS Instructions for Form 1040 (Child Tax Credit & Credit for Other Dependents): Reference page

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

The Formula Explained

AGI:

AGI = max(0, Income − Adjustments)

Taxable Income:

TI = max(0, AGI − Deduction)

Progressive Tax (Head of Household):

Tax(TI) = Σ over brackets i of rate_i × max(0, min(TI, upper_i) − lower_i)

Child and Other Dependent Credits (simplified, nonrefundable):

BaseCredit = 2000 × ChildrenUnder17 + 500 × OtherDependents

Phaseout = 50 × ceil(max(0, (MAGI − 200000)) / 1000)

Credit = max(0, BaseCredit − Phaseout)

FinalTax = max(0, Tax(TI) − min(Tax(TI), Credit))

Note: This tool approximates MAGI as AGI and does not compute refundable Additional CTC, AMT, NIIT, or capital gains rates.

Glossary of Variables

  • Total annual income: Your gross taxable income from all sources.
  • Adjustments: Above-the-line adjustments (e.g., deductible traditional IRA, HSA, student loan interest).
  • AGI: Adjusted Gross Income = Income − Adjustments.
  • Standard deduction (HOH): Fixed amount reducing taxable income; higher if 65+ and/or blind.
  • Itemized deduction: Sum of eligible deductions (mortgage interest, SALT subject to cap, etc.).
  • Taxable income: AGI − Deduction (not below zero).
  • Marginal rate: The rate applied to your last dollar of taxable income.
  • Effective rate: Final tax ÷ AGI.
  • Child Tax Credit (CTC): Up to $2,000 per child under 17; phases out above $200,000 (HOH).
  • Credit for Other Dependents (ODC): $500 per qualifying dependent; same phaseout rules.

How It Works: A Step-by-Step Example

Scenario (2024): Income = $85,000; Adjustments = $3,000; Standard deduction (HOH) = $21,900; 1 qualifying child under 17; 0 other dependents.

  1. AGI = 85,000 − 3,000 = 82,000
  2. Taxable income = 82,000 − 21,900 = 60,100
  3. Apply HOH brackets (2024):
    • 10% up to 16,550 → 1,655.00
    • 12% on (60,100 − 16,550) = 43,550 → 5,226.00
    • Total pre-credit tax ≈ 6,881.00
  4. CTC base = $2,000. MAGI≈AGI=82,000 ≤ 200,000 → no phaseout → Credit = 2,000
  5. Final tax = 6,881 − min(6,881, 2,000) = 4,881
  6. Effective rate ≈ 4,881 / 82,000 ≈ 5.95%

Frequently Asked Questions

Is Head of Household always better than Single?

Often, yes. HOH has a larger standard deduction and wider brackets than Single. You must meet qualification rules (see IRS Pub. 501).

Does this include state taxes?

No. This tool estimates U.S. federal income tax only.

Why doesn’t my result match my paycheck?

Paycheck withholding uses IRS tables and W-4 elections. It’s designed to approximate annual tax and may differ from your final return.

Can I use itemized deductions here?

Yes. Choose “Itemized deduction” and enter your amount. The tool will compare against the standard deduction only if you select standard yourself.

What about capital gains or qualified dividends?

Not included. Those may be taxed using preferential rates and additional rules. Consider a comprehensive tax software or advisor for those cases.

Is my data saved?

No. This standalone page computes everything locally in your browser.

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)
AGI: AGI = max(0, Income − Adjustments) Taxable Income: TI = max(0, AGI − Deduction) Progressive Tax (Head of Household): Tax(TI) = Σ over brackets i of rate_i × max(0, min(TI, upper_i) − lower_i) Child and Other Dependent Credits (simplified, nonrefundable): BaseCredit = 2000 × ChildrenUnder17 + 500 × OtherDependents Phaseout = 50 × ceil(max(0, (MAGI − 200000)) / 1000) Credit = max(0, BaseCredit − Phaseout) FinalTax = max(0, Tax(TI) − min(Tax(TI), Credit)) Note: This tool approximates MAGI as AGI and does not compute refundable Additional CTC, AMT, NIIT, or capital gains rates.
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)

Federal Income Tax Calculator (Head of Household)

This professional-grade calculator estimates U.S. federal income tax for Head of Household filers. Enter your income, deductions, and dependents to see taxable income, marginal bracket, effective rate, and an estimated Child Tax Credit. Built for clarity, accessibility, and accuracy using official IRS sources.

Results

Adjusted Gross Income (AGI)
$0
Deduction used
$0
Taxable income
$0
Estimated tax before credits
$0
Estimated credits applied
$0
Estimated federal tax (after credits)
$0
Marginal tax rate
—
Effective tax rate (vs. AGI)
—

Bracket breakdown (Head of Household)

Data Source and Methodology

Authoritative sources:

  • IRS Revenue Procedure 2023-34 (Inflation Adjustments for 2024): Direct PDF
  • IRS Revenue Procedure 2024-55 (Inflation Adjustments for 2025): Direct PDF
  • IRS – Federal Income Tax Rates and Brackets: Reference page
  • IRS Publication 501 (Dependents, Standard Deduction, and Filing Information): Reference page
  • IRS Instructions for Form 1040 (Child Tax Credit & Credit for Other Dependents): Reference page

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

The Formula Explained

AGI:

AGI = max(0, Income − Adjustments)

Taxable Income:

TI = max(0, AGI − Deduction)

Progressive Tax (Head of Household):

Tax(TI) = Σ over brackets i of rate_i × max(0, min(TI, upper_i) − lower_i)

Child and Other Dependent Credits (simplified, nonrefundable):

BaseCredit = 2000 × ChildrenUnder17 + 500 × OtherDependents

Phaseout = 50 × ceil(max(0, (MAGI − 200000)) / 1000)

Credit = max(0, BaseCredit − Phaseout)

FinalTax = max(0, Tax(TI) − min(Tax(TI), Credit))

Note: This tool approximates MAGI as AGI and does not compute refundable Additional CTC, AMT, NIIT, or capital gains rates.

Glossary of Variables

  • Total annual income: Your gross taxable income from all sources.
  • Adjustments: Above-the-line adjustments (e.g., deductible traditional IRA, HSA, student loan interest).
  • AGI: Adjusted Gross Income = Income − Adjustments.
  • Standard deduction (HOH): Fixed amount reducing taxable income; higher if 65+ and/or blind.
  • Itemized deduction: Sum of eligible deductions (mortgage interest, SALT subject to cap, etc.).
  • Taxable income: AGI − Deduction (not below zero).
  • Marginal rate: The rate applied to your last dollar of taxable income.
  • Effective rate: Final tax ÷ AGI.
  • Child Tax Credit (CTC): Up to $2,000 per child under 17; phases out above $200,000 (HOH).
  • Credit for Other Dependents (ODC): $500 per qualifying dependent; same phaseout rules.

How It Works: A Step-by-Step Example

Scenario (2024): Income = $85,000; Adjustments = $3,000; Standard deduction (HOH) = $21,900; 1 qualifying child under 17; 0 other dependents.

  1. AGI = 85,000 − 3,000 = 82,000
  2. Taxable income = 82,000 − 21,900 = 60,100
  3. Apply HOH brackets (2024):
    • 10% up to 16,550 → 1,655.00
    • 12% on (60,100 − 16,550) = 43,550 → 5,226.00
    • Total pre-credit tax ≈ 6,881.00
  4. CTC base = $2,000. MAGI≈AGI=82,000 ≤ 200,000 → no phaseout → Credit = 2,000
  5. Final tax = 6,881 − min(6,881, 2,000) = 4,881
  6. Effective rate ≈ 4,881 / 82,000 ≈ 5.95%

Frequently Asked Questions

Is Head of Household always better than Single?

Often, yes. HOH has a larger standard deduction and wider brackets than Single. You must meet qualification rules (see IRS Pub. 501).

Does this include state taxes?

No. This tool estimates U.S. federal income tax only.

Why doesn’t my result match my paycheck?

Paycheck withholding uses IRS tables and W-4 elections. It’s designed to approximate annual tax and may differ from your final return.

Can I use itemized deductions here?

Yes. Choose “Itemized deduction” and enter your amount. The tool will compare against the standard deduction only if you select standard yourself.

What about capital gains or qualified dividends?

Not included. Those may be taxed using preferential rates and additional rules. Consider a comprehensive tax software or advisor for those cases.

Is my data saved?

No. This standalone page computes everything locally in your browser.

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)
AGI: AGI = max(0, Income − Adjustments) Taxable Income: TI = max(0, AGI − Deduction) Progressive Tax (Head of Household): Tax(TI) = Σ over brackets i of rate_i × max(0, min(TI, upper_i) − lower_i) Child and Other Dependent Credits (simplified, nonrefundable): BaseCredit = 2000 × ChildrenUnder17 + 500 × OtherDependents Phaseout = 50 × ceil(max(0, (MAGI − 200000)) / 1000) Credit = max(0, BaseCredit − Phaseout) FinalTax = max(0, Tax(TI) − min(Tax(TI), Credit)) Note: This tool approximates MAGI as AGI and does not compute refundable Additional CTC, AMT, NIIT, or capital gains rates.
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

Federal Income Tax Calculator (Head of Household)

This professional-grade calculator estimates U.S. federal income tax for Head of Household filers. Enter your income, deductions, and dependents to see taxable income, marginal bracket, effective rate, and an estimated Child Tax Credit. Built for clarity, accessibility, and accuracy using official IRS sources.

Results

Adjusted Gross Income (AGI)
$0
Deduction used
$0
Taxable income
$0
Estimated tax before credits
$0
Estimated credits applied
$0
Estimated federal tax (after credits)
$0
Marginal tax rate
—
Effective tax rate (vs. AGI)
—

Bracket breakdown (Head of Household)

Data Source and Methodology

Authoritative sources:

  • IRS Revenue Procedure 2023-34 (Inflation Adjustments for 2024): Direct PDF
  • IRS Revenue Procedure 2024-55 (Inflation Adjustments for 2025): Direct PDF
  • IRS – Federal Income Tax Rates and Brackets: Reference page
  • IRS Publication 501 (Dependents, Standard Deduction, and Filing Information): Reference page
  • IRS Instructions for Form 1040 (Child Tax Credit & Credit for Other Dependents): Reference page

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

The Formula Explained

AGI:

AGI = max(0, Income − Adjustments)

Taxable Income:

TI = max(0, AGI − Deduction)

Progressive Tax (Head of Household):

Tax(TI) = Σ over brackets i of rate_i × max(0, min(TI, upper_i) − lower_i)

Child and Other Dependent Credits (simplified, nonrefundable):

BaseCredit = 2000 × ChildrenUnder17 + 500 × OtherDependents

Phaseout = 50 × ceil(max(0, (MAGI − 200000)) / 1000)

Credit = max(0, BaseCredit − Phaseout)

FinalTax = max(0, Tax(TI) − min(Tax(TI), Credit))

Note: This tool approximates MAGI as AGI and does not compute refundable Additional CTC, AMT, NIIT, or capital gains rates.

Glossary of Variables

  • Total annual income: Your gross taxable income from all sources.
  • Adjustments: Above-the-line adjustments (e.g., deductible traditional IRA, HSA, student loan interest).
  • AGI: Adjusted Gross Income = Income − Adjustments.
  • Standard deduction (HOH): Fixed amount reducing taxable income; higher if 65+ and/or blind.
  • Itemized deduction: Sum of eligible deductions (mortgage interest, SALT subject to cap, etc.).
  • Taxable income: AGI − Deduction (not below zero).
  • Marginal rate: The rate applied to your last dollar of taxable income.
  • Effective rate: Final tax ÷ AGI.
  • Child Tax Credit (CTC): Up to $2,000 per child under 17; phases out above $200,000 (HOH).
  • Credit for Other Dependents (ODC): $500 per qualifying dependent; same phaseout rules.

How It Works: A Step-by-Step Example

Scenario (2024): Income = $85,000; Adjustments = $3,000; Standard deduction (HOH) = $21,900; 1 qualifying child under 17; 0 other dependents.

  1. AGI = 85,000 − 3,000 = 82,000
  2. Taxable income = 82,000 − 21,900 = 60,100
  3. Apply HOH brackets (2024):
    • 10% up to 16,550 → 1,655.00
    • 12% on (60,100 − 16,550) = 43,550 → 5,226.00
    • Total pre-credit tax ≈ 6,881.00
  4. CTC base = $2,000. MAGI≈AGI=82,000 ≤ 200,000 → no phaseout → Credit = 2,000
  5. Final tax = 6,881 − min(6,881, 2,000) = 4,881
  6. Effective rate ≈ 4,881 / 82,000 ≈ 5.95%

Frequently Asked Questions

Is Head of Household always better than Single?

Often, yes. HOH has a larger standard deduction and wider brackets than Single. You must meet qualification rules (see IRS Pub. 501).

Does this include state taxes?

No. This tool estimates U.S. federal income tax only.

Why doesn’t my result match my paycheck?

Paycheck withholding uses IRS tables and W-4 elections. It’s designed to approximate annual tax and may differ from your final return.

Can I use itemized deductions here?

Yes. Choose “Itemized deduction” and enter your amount. The tool will compare against the standard deduction only if you select standard yourself.

What about capital gains or qualified dividends?

Not included. Those may be taxed using preferential rates and additional rules. Consider a comprehensive tax software or advisor for those cases.

Is my data saved?

No. This standalone page computes everything locally in your browser.

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)
AGI: AGI = max(0, Income − Adjustments) Taxable Income: TI = max(0, AGI − Deduction) Progressive Tax (Head of Household): Tax(TI) = Σ over brackets i of rate_i × max(0, min(TI, upper_i) − lower_i) Child and Other Dependent Credits (simplified, nonrefundable): BaseCredit = 2000 × ChildrenUnder17 + 500 × OtherDependents Phaseout = 50 × ceil(max(0, (MAGI − 200000)) / 1000) Credit = max(0, BaseCredit − Phaseout) FinalTax = max(0, Tax(TI) − min(Tax(TI), Credit)) Note: This tool approximates MAGI as AGI and does not compute refundable Additional CTC, AMT, NIIT, or capital gains rates.
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).