Introduction
Your marginal tax rate is the tax rate on your last dollar of income. It is not the rate you pay on all your money. The U.S. uses a progressive tax system, so your income is split into slices called tax brackets. Each slice is taxed at its own rate.
This marginal tax rate calculator shows you both key numbers. It gives your marginal rate (the rate on your top dollar) and your effective tax rate (your total tax divided by your total income). The effective rate is almost always lower than the marginal rate.
Pick your tax year (2024, 2025, or 2026), choose your filing status, and type in your taxable income. You can also add extra income, like a bonus or a raise, to see how much of it goes to tax. The tool shows your total federal tax, your take-home pay, a bracket-by-bracket table, charts, and a step-by-step math breakdown.
All bracket numbers come straight from official IRS revenue procedures. This calculator covers federal income tax only. It does not include state tax, Social Security, or Medicare.
How to use our Marginal Tax Rate Calculator
Enter your tax year, filing status, and taxable income, and the calculator shows your marginal tax rate, effective tax rate, total federal tax, and income kept after tax, plus a bracket-by-bracket breakdown.
Tax Year: Pick 2024, 2025, or 2026. Each year uses its own IRS tax brackets, so your results change when you switch years.
Filing Status: Choose how you file: Single, Married Filing Jointly, Married Filing Separately, Head of Household, or Qualifying Surviving Spouse. Your status sets the income range for each tax bracket.
Annual Taxable Income: Type your taxable income for the year. This is your income after deductions, not your full paycheck total. Commas are added as you type.
Additional Income (Optional): Add a bonus, raise, or one-time windfall to see how extra money is taxed. The calculator shows your new tax bracket and the tax on that extra income. Leave it blank if you don't need it.
Click Calculate to see your results, or Reset to start over with the default numbers.
What Is a Marginal Tax Rate?
Your marginal tax rate is the rate you pay on your last dollar of income. The U.S. federal income tax is progressive. That means your income is cut into slices called tax brackets, and each slice is taxed at its own rate. The rate on your top slice is your marginal rate.
How Tax Brackets Really Work
A common myth is that moving into a higher bracket taxes all of your income at that higher rate. That is not true. Only the money above the bracket line is taxed at the higher rate. The rest keeps its lower rates.
Say you are single in 2026 with $85,000 of taxable income. The first $12,400 is taxed at 10%. The money from there up to $50,400 is taxed at 12%. The rest, up to $85,000, is taxed at 22%. So your marginal rate is 22%, but you do not pay 22% on the whole $85,000.
Marginal Rate vs. Effective Tax Rate
- Marginal tax rate: the rate on your next (or last) dollar. It shows the tax cost of extra income.
- Effective tax rate: your total tax divided by your total taxable income. It is your true average rate, and it is always lower than your marginal rate.
Use your marginal rate to make choices about new money. Use your effective rate to see your overall tax load.
Taxable Income and Filing Status
Brackets apply to taxable income, not your paycheck total. Taxable income is your gross income minus the standard deduction (or itemized deductions) and other write-offs, like pre-tax 401(k) or HSA money. So your taxable income is usually much smaller than what you earn.
Your filing status also matters. Single, Married Filing Jointly, Married Filing Separately, Head of Household, and Qualifying Surviving Spouse each have their own bracket lines. Joint filers get wider brackets, so the same income can land in a lower rate.
Why Your Marginal Rate Matters
Knowing your marginal rate helps you plan real money moves:
- See how much of a bonus, raise, or side job you actually keep.
- Find the true value of a deduction. A $1,000 deduction saves $220 at a 22% marginal rate.
- Choose between a traditional or Roth retirement account.
- Time income or a Roth conversion to stay under a bracket line.
- Plan the sale of an investment or property.
Things to Keep in Mind
These brackets cover federal ordinary income tax only. They do not include Social Security and Medicare (FICA) taxes, state or local income tax, the lower rates on long-term capital gains and qualified dividends, or credits like the Child Tax Credit. Phase-outs of credits and benefits can also push your real tax cost on extra income above your bracket rate. Bracket lines are adjusted each year for inflation by the IRS, so the same income can fall in a lower bracket next year.