Finance Calculators

Tax Bracket Calculator

Estimate total federal income tax owed and your effective and marginal tax rates using progressive tax brackets.

Estimated total tax —

Effective tax rate —

Marginal tax rate —

About the Tax Bracket Calculator

Progressive tax systems apply increasing rates to different slices ("brackets") of income — only the income within each bracket is taxed at that bracket's rate, not your entire income.

Formula: Total Tax = ∑ (income within each bracket × that bracket's rate)

This calculator uses simplified 2024 US single-filer federal brackets (10% to 37%) for illustration. Your effective rate (total tax ÷ income) is always lower than your marginal rate (the rate on your last dollar earned) because of this tiered structure.