Income Tax Calculator
Estimate your 2024 US federal income tax using current brackets
Standard deduction: $14,600
How Tax Brackets Work
The US uses a progressive tax system — you pay a lower rate on the first dollars earned and a higher rate only on income above each threshold. Only the income within each bracket is taxed at that rate.
Guide
How it works
This calculator uses 2024 US federal tax brackets. It applies the standard deduction unless you enter higher itemized deductions.
⚠️ This is an estimate only. State taxes, FICA, credits, and other factors are not included. Consult a tax professional for filing.
What is the difference between effective and marginal tax rate?expand_more
Your marginal rate is the rate on your last dollar earned. Your effective rate is total tax divided by total income — usually much lower than marginal.
What is the standard deduction?expand_more
A flat amount the IRS lets you deduct without itemizing. In 2024 it's $14,600 for single filers and $29,200 for married filing jointly.
Does this include state taxes?expand_more
No — this only estimates federal income tax. State tax rates vary significantly by state.
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