Tax Calculator

A federal income tax calculator estimates your US federal tax liability based on your annual income, filing status, and deductions. It applies the 2024 federal tax brackets to calculate your tax, effective rate, and marginal bracket.

The US uses a progressive tax system, meaning different portions of your income are taxed at different rates. Understanding your marginal bracket (the rate on your last dollar of income) versus your effective rate (overall percentage paid) is essential for financial planning and evaluating the true impact of additional income.

This calculator supports Single, Married Filing Jointly, and Head of Household filing statuses with the option to apply the 2024 standard deduction. It provides a quick estimate of your federal tax obligation to help with budgeting and tax planning throughout the year.

1. Enter your annual income — Your total gross income for the year.
2. Select filing status — Choose Single, Married Filing Jointly, or Head of Household.
3. Choose deduction — The standard deduction is applied by default. Uncheck if you plan to itemize.
4. Review results — See taxable income, federal tax amount, effective rate, and marginal bracket.

Federal tax is calculated using progressive brackets. Each bracket applies only to income within that range:

Tax = sum of (income in each bracket x bracket rate)

For Single filers (2024): 10% on first $11,600, 12% on $11,601-$47,150, 22% on $47,151-$100,525, 24% on $100,526-$191,950, 32% on $191,951-$243,725, 35% on $243,726-$609,350, 37% on $609,351+.

Effective Tax Rate = Total Tax / Gross Income x 100