Income Tax Calculator
Estimate US federal income tax for a single filer using simplified 2024 tax brackets. Estimate only — not tax advice. — free, fast and private.
Example: $80,000 taxable income (single filer, simplified 2024 brackets) = about $12,653 federal tax, effective rate about 15.82%. Estimate only — not tax advice.
How to use Income Tax Calculator
- Enter your annual taxable income.
- Click Calculate to apply the simplified 2024 single-filer brackets.
- See your estimated federal tax, marginal bracket and effective rate.
- Remember this excludes state tax, deductions and credits.
Note: this tool runs in your browser. Nothing is uploaded.
Frequently Asked Questions
Is this official US tax advice?
No. It is a simplified estimate using 2024 single-filer federal brackets. It excludes the standard deduction, state tax, credits and other adjustments — consult a tax professional for real filing.
What is the difference between marginal and effective rate?
Your marginal rate is the rate on your last dollar of income. Your effective rate is total tax divided by total income, and it is always lower under progressive brackets.
Does it include state income tax?
No. State taxes vary widely and are not included in this estimate.
Is my data uploaded anywhere?
No. All calculations run in your browser and your numbers are never sent to a server.