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Income Tax Calculator

See your federal tax, effective rate, and what’s left after the IRS.

Inputs

Updates live as you type

How it works

Federal income tax is progressive: each slice of taxable income is taxed at its bracket’s rate, so your effective rate is always lower than your top marginal rate. This uses 2025 brackets on income after your deductions. It excludes state tax and credits.

Frequently asked questions

What’s the difference between marginal and effective rate?

Your marginal rate is the rate on your last dollar — the bracket you’re in. Your effective rate is total tax divided by income, which is lower because earlier dollars were taxed at lower rates.

What deduction should I enter?

Most filers take the standard deduction — about $15,000 single or $30,000 married for 2025. Enter a larger figure only if your itemized deductions exceed that.

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