Income Tax Calculator

Free income tax calculator for US federal taxes (2024). Select your filing status, enter gross income, and see estimated taxes across all brackets. Includes FICA (Social Security + Medicare), effective and marginal tax rates, and monthly after-tax income. Disclaimer: estimates only, consult a tax professional.

Disclaimer

This is an estimate only based on 2024 US Federal tax brackets. It does not constitute tax advice. State and local taxes are not included. Consult a qualified tax professional for your actual tax situation.

Filing Status

Annual Gross Income ($)

Deduction

Enter your annual gross income above to estimate your federal income tax and FICA taxes.

2024 Federal Tax Brackets — Single

Rate	Taxable Income Range
10%	$0 – $11,600
12%	$11,600 – $47,150
22%	$47,150 – $100,525
24%	$100,525 – $191,950
32%	$191,950 – $243,725
35%	$243,725 – $609,350
37%	$609,350 – and above

Standard Deduction: $14,600 · SS Wage Base: $168,600 · Medicare Surcharge Threshold: $200,000

Important: This calculator provides estimates based on 2024 US Federal tax brackets and standard FICA rates. It does not account for state/local taxes, tax credits (e.g., Child Tax Credit, EITC), capital gains, self-employment tax, AMT, or other tax situations. This is not tax advice. Always consult a qualified tax professional for your specific situation.

How to Use Income Tax Calculator

1Select your filing status (Single, MFJ, MFS, HOH).
2Enter your annual gross income.
3View estimated federal tax, FICA, effective rate, and take-home pay.
4Compare tax at different income levels.

Frequently Asked Questions

How are federal income taxes calculated?▾

The US uses progressive tax brackets. You pay 10% on the first portion of income, 12% on the next, 22% on the next, and so on. Only income within each bracket is taxed at that rate.

What is the difference between marginal and effective tax rate?▾

Your marginal tax rate is the rate on your last dollar of income (your highest bracket). Your effective rate is total tax divided by total income — always lower than your marginal rate.

What is FICA tax?▾

FICA includes Social Security tax (6.2% on income up to $168,600) and Medicare tax (1.45% on all income, plus 0.9% surcharge on income over $200,000).

Is this a substitute for professional tax advice?▾

No. This calculator provides estimates based on simplified federal brackets only. It does not include state taxes, credits, or deductions beyond the standard deduction. Always consult a qualified tax professional.

About Income Tax Calculator

NexTool's Income Tax Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.