Income Tax Calculator
Free online Income Tax Calculator.
Calculator
How to Use
- Enter the required values
- Click Calculate to see the result
- Review the detailed output
Formula
Tax = Sum of (income in bracket x bracket rate). 2024 brackets: 10%, 12%, 22%, 24%, 32%, 35%, 37%. Effective rate = Total Tax / Total Income. Marginal = rate on last dollar.
Example Calculations
Single Filer
Input: $75,000 annual income, single, standard deduction
Result: Federal tax: $9,548, Effective rate: 12.7%
Married Filing
Input: $150,000, married jointly, 2 children
Result: Federal tax: $17,890, Effective rate: 11.9%
Self-Employed
Input: $100,000 net self-employment income
Result: Income tax: $14,370 + SE tax: $14,130 = $28,500 total
About This Calculator
Free online income tax calculator. Calculate instantly in your browser with our easy-to-use tool. No sign-up required.
Our income tax calculator is free, easy to use, and provides instant results. All calculations are performed in your browser for privacy and speed.
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Frequently Asked Questions
How is US income tax calculated?
Progressive system with rates 10-37% across brackets. Effective rate is typically lower than marginal.
Marginal vs effective rate?
Marginal = rate on last dollar. Effective = total tax / total income, usually lower.
Tax deduction vs credit?
Deduction reduces taxable income. Credit directly reduces tax bill. $1K credit saves $1K.
Standard deduction?
Fixed amount reducing taxable income. 2024: $14,600 single, $29,200 married filing jointly.
How do tax brackets work?
Different rates apply to different income portions. Being in 22% bracket does not mean all income taxed at 22%.