Income Tax Calculator
Estimate your 2024–2025 federal income tax using current tax brackets. See your effective rate, marginal bracket, taxable income, and after-tax income.
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Estimated Federal Tax
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Effective Tax Rate —
Marginal Tax Bracket —
Taxable Income —
After-Tax Income —
How to Use This Calculator
- Enter your Gross Annual Income — total income before deductions.
- Select your Filing Status — this determines your standard deduction and bracket thresholds.
- Optionally add Additional Deductions like 401(k) or IRA contributions in More Options.
- See your estimated Federal Tax, Effective Rate, and After-Tax Income.
Formula
Taxable Income = Gross Income − Standard Deduction − Additional Deductions
Tax = Sum of (income in each bracket × bracket rate)
Effective Rate = Total Tax ÷ Gross Income × 100
Example
Example: $80,000 gross income, single filer, no additional deductions (2024).
- Standard Deduction: $14,600
- Taxable Income: $65,400
- Tax: $1,160 + $4,266 + $4,015 = $9,441
- Effective Rate: 11.8%
- Marginal Rate: 22%
Frequently Asked Questions
- For single filers in 2024: 10% up to $11,600, 12% up to $47,150, 22% up to $100,525, 24% up to $191,950, 32% up to $243,725, 35% up to $609,350, 37% above $609,350. Married filing jointly thresholds are roughly doubled.
- Your marginal rate is the rate on your last dollar of income (your tax bracket). Your effective rate is total tax ÷ total income — the average rate you pay. Most people's effective rate is significantly lower than their marginal rate.
- For 2024: Single = $14,600, Married Filing Jointly = $29,200, Head of Household = $21,900. For 2025, these increase slightly for inflation. About 87% of taxpayers take the standard deduction rather than itemizing.
- 401(k) contributions, traditional IRA contributions, and HSA contributions reduce your taxable income dollar-for-dollar. Contributing $5,000 to a 401(k) in the 22% bracket saves $1,100 in federal income tax.
- No, this calculator estimates federal income tax only. State income taxes vary widely — from 0% (TX, FL, WA, etc.) to over 13% (CA). Add your state rate on top of the federal estimate for your total income tax burden.