Marginal Tax Rate Calculator (Tax Year 2025)
See your 2025 marginal and effective federal tax rates using the 2025 brackets.
How the marginal tax rate calculator (tax year 2025) works
It applies the 2025 brackets to your taxable income to identify your marginal rate (the tax on your next dollar) and your effective rate (your average across all income), useful when filing in 2026.
Worked example: with taxable income of $80,000, the marginal tax rate calculator (tax year 2025) shows marginal tax rate of 22%.
- Total federal tax
- $12,514
- Marginal rate
- 22%
- Effective rate
- 15.6%
- Tax on next $1,000
- $220
The formula
Marginal rate = the 2025 bracket containing your taxable income; effective rate = total 2025 tax ÷ taxable income.
Results are estimates for educational purposes and are not financial advice. Confirm exact figures with your lender, plan administrator or advisor.
Questions about the marginal tax rate calculator (tax year 2025)
What are the 2025 marginal rates?
The same seven rates as recent years — 10, 12, 22, 24, 32, 35 and 37% — with the 37% rate beginning at $626,350 (single) or $751,600 (joint) of taxable income.
Why is my effective rate lower than my bracket?
Because the early brackets tax your first dollars at 10% and 12%; only the top slice reaches your marginal rate, so the average is always lower.
Does the marginal rate include FICA?
No — this is the federal income tax bracket only. Payroll taxes (Social Security and Medicare) and any state tax are on top of it.
Is the Marginal Tax Rate Calculator (Tax Year 2025) free to use?
Yes. Every calculator on FinCalculators is completely free, with no sign-up, login or paywall. You can run as many scenarios as you like.
- 2026 & 2025 Federal Income Tax Brackets — All seven rates and thresholds by filing status, 2026 and 2025, plus capital-gains breakpoints.