Federal Income Tax Calculator

Calculate your federal income tax liability using 2025 tax brackets, standard or itemized deductions, and see your effective and marginal tax rates.

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Frequently Asked Questions

What are the 2025 federal income tax brackets?
For 2025 the seven brackets for single filers are 10% (up to $11,925), 12% ($11,925-$48,475), 22% ($48,475-$103,350), 24% ($103,350-$197,300), 32% ($197,300-$250,525), 35% ($250,525-$626,350), and 37% (above $626,350). Married filing jointly thresholds are roughly double.
What is the difference between marginal and effective tax rate?
Your marginal rate is the percentage applied to the last dollar of income. Your effective rate is the total tax divided by total income, and it is always lower than your marginal rate because earlier portions of income are taxed at lower brackets.
Should I take the standard deduction or itemize?
Take whichever is larger. For 2025, the standard deduction is $15,000 (single), $30,000 (married joint), or $22,500 (head of household). If your mortgage interest, state taxes, and charitable contributions exceed that, itemizing saves more.
Does this calculator include state taxes or FICA?
No. This calculator estimates federal income tax only. Use the State Tax Estimate calculator for state taxes and the Salary After Tax calculator for a combined picture including FICA.

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