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Income Tax Calculator
Estimate your US federal income tax for 2025.
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Results
Federal Income Tax
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Effective Tax Rate
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Marginal Tax Rate
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After-Tax Income
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How to use the Income Tax Calculator
Enter your annual income and filing status to estimate 2025 US federal income tax using the standard deduction.
2025 federal tax brackets (single)
10% to $11,925; 12% to $48,475; 22% to $103,350; 24% to $197,300; 32% to $250,525; 35% to $626,350; 37% above. Married filing jointly brackets are roughly double, with a $31,500 standard deduction ($15,750 single).
Marginal vs effective rate
Your marginal rate is the tax on your next dollar — the number that matters for decisions like Roth vs traditional contributions. Your effective rate (total tax ÷ income) is always lower. For per-paycheck detail, use our paycheck calculator.
Frequently Asked Questions
Your marginal rate is the tax on your next dollar earned. Your effective rate is total tax divided by total income — always lower thanks to brackets.
No — this covers federal income tax only. State taxes vary widely; use our paycheck calculators for combined estimates.