Effective Tax Rate Calculator United States

What the effective tax rate calculator does

The effective tax rate calculator shows how much of your income you actually pay in federal income tax. Many people see a top bracket of 22% or 24% and assume that rate applies to their whole salary, but it does not. The tool shows your marginal bracket and your effective rate for the 2026 tax year side by side.

Enter your gross income and filing status, and the calculator returns your taxable income, your federal tax, the bracket your last dollar falls into, and your effective rate.

Marginal rate versus effective rate

Your marginal rate is the rate on your last dollar of taxable income, the top bracket you reach. Your effective rate is your total federal tax as a percentage of your gross income. The two are rarely the same, and the gap is usually large.

Federal income tax is progressive: income is divided into bands, each taxed at its own rate. The first dollars are taxed at 10%, the next band at 12%, and so on, and only income inside a higher band is taxed at that higher rate. A single filer in the 22% bracket pays 10% on the lowest slice, 12% on the next, and 22% only on the part above the third threshold.

How the calculation works

• It subtracts the standard deduction for your filing status from your gross income to find taxable income.
• It applies the 2026 federal brackets for that status, taxing the income in each band at that band’s rate.
• It adds those amounts to get your total federal tax.
• It divides the federal tax by your gross income for your effective rate, and reports the top bracket you reached as your marginal rate.

The standard deduction comes off before any bracket applies, so part of your income is never taxed. That is one of the main reasons your effective rate sits well below your marginal bracket.

A worked example for 2026

Consider a single filer earning $80,000 in 2026. The single standard deduction is $16,100, so taxable income is $63,900. Under the 2026 single brackets, the first $12,400 is taxed at 10% ($1,240), the amount up to $50,400 at 12% ($4,560), and the rest up to $63,900 at 22% ($2,970). Total federal tax is $8,770.

That filer is in the 22% bracket, but the effective rate is $8,770 divided by $80,000, about 10.96%, half the bracket rate. Planning around the marginal bracket alone would badly overstate the tax.

Why the effective rate is the useful number

When you compare job offers, plan a budget or estimate what a raise adds, the effective rate tells you the federal share of your income. A raise that moves you into a higher bracket does not tax your earlier income at the higher rate, so your take-home pay always rises with your pay, and the effective rate rises gradually instead of jumping at each bracket.

Assumptions and limitations

This calculator estimates federal income tax only. It does not include state or local income tax, Social Security or Medicare payroll taxes, the alternative minimum tax, or credits such as the child tax credit, all of which can change your real liability. It assumes the standard deduction, not itemizing, for the filing status you choose.

The 2026 brackets and standard deductions come from IRS figures, stored as parameters and updated when they change. For a precise filing, especially with credits, itemized deductions or multiple income sources, confirm the numbers with a tax professional.

This is general information only and not financial advice.

About This Effective Tax Rate Calculator

Use this effective tax rate calculator to get an instant, accurate estimate. The figures follow official IRS guidance and every rate and threshold is kept up to date for 2026. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.