Tax Calculator — Free Income Tax Estimator

Free federal income tax calculator with 2024 US brackets, bracket breakdown, and filing status options. Estimate your tax liability — 100% client-side. 100% serverless.

🔒 100% Private
Completely Free
🌐 Runs in Browser
📦 Export Ready

Tax Calculator — Free Income Tax Estimator

Tool Workspace

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  1. Enter Income — Your taxable income amount.
  2. Select Filing Status — Single, Married Filing Jointly, or Head of Household.
  3. Calculate — See total tax, effective rate, marginal rate, and after-tax income.
  4. View Breakdown — Detailed bracket-by-bracket tax calculation.

Tax Calculator — Estimate Your Federal Tax

The Tax Calculator estimates your US federal income tax using 2024 brackets. Enter your taxable income and filing status to see total tax, effective rate, marginal rate, and a detailed bracket-by-bracket breakdown.

Understanding Tax Brackets

The US uses a progressive tax system. Your income is taxed at increasing rates as it moves through each bracket. The first dollars are taxed at 10%, and only income above higher thresholds is taxed at higher rates.

2024 Federal Tax Brackets (Single)

  • 10% — $0 to $11,600
  • 12% — $11,601 to $47,150
  • 22% — $47,151 to $100,525
  • 24% — $100,526 to $191,950
  • 32% — $191,951 to $243,725
  • 35% — $243,726 to $609,350
  • 37% — $609,351+

Privacy

All calculations run in your browser. No income data is transmitted.

Frequently Asked Questions

Which tax brackets are used?

The calculator uses 2024 US federal income tax brackets for all three filing statuses: Single, Married Filing Jointly, and Head of Household.

What is effective vs marginal tax rate?

Your marginal rate is the rate on your last dollar of income. Your effective rate is total tax divided by total income — it's always lower because earlier income is taxed at lower rates.

Does it include state taxes?

No. This calculator covers federal income tax only. State taxes vary widely. Use the Salary Calculator for combined federal/state estimates.

Is my data safe?

Yes. All calculations run 100% in your browser. No income data is transmitted.