Calculator
Tax Percentage Calculator
Calculate your effective tax rate — the share of your total income that goes to taxes.
Inputs
Effective rate = total tax ÷ total income.
FAQ
About this calculator
What's the difference between effective and marginal rate?
Effective rate is the average across your whole income. Marginal rate is what you'd pay on the next dollar earned. The marginal rate is almost always higher.
Should I include FICA?
It depends what you're measuring. For "total federal taxes as a share of income", include both. For "federal income tax effective rate", use only income tax.
What counts as income?
For an apples-to-apples rate, use the same income figure consistently — either gross, AGI, or taxable. Most people use gross income.
Educational only: Verify figures and consult a tax professional before filing.