Effective vs. Marginal Tax Rate Calculator
See your true average federal tax rate compared to your marginal bracket, with a bracket-by-bracket breakdown of exactly how your tax is built up.
| Bracket | Income in bracket | Tax from bracket |
|---|
How effective and marginal rates are calculated
Effective rate = Total tax ÷ Total taxable income
Because federal tax brackets are marginal, each bracket's rate only applies to the slice of income that falls within it — not your entire income. Your effective rate blends all those slices into one average number, which is why it's always lower than (or equal to) your marginal rate.
Federal tax owed: $8,334. Marginal rate: 22% (the bracket covering $48,475–$103,350, which contains the last dollar of this income). Effective rate: $8,334 ÷ $61,000 = 13.66%.
Even though this filer is "in the 22% bracket," they pay an average of only 13.66% across their whole taxable income — because the first $48,475 was taxed at just 10% and 12%.
Using the MFJ brackets: $23,850 × 10% = $2,385, plus ($96,950 − $23,850) × 12% = $8,772, plus ($150,000 − $96,950) × 22% = $11,671. Total federal tax: $22,828.
Marginal rate: 22% (same top bracket as the single filer above). Effective rate: $22,828 ÷ $150,000 = 15.22% — higher than the single filer's 13.66% even at the same marginal rate, because the MFJ filer's income fills up more of each lower bracket in dollar terms before reaching the top slice.
2025 federal income tax brackets
| Rate | Single | Married filing jointly |
|---|---|---|
| 10% | $0–$11,925 | $0–$23,850 |
| 12% | $11,925–$48,475 | $23,850–$96,950 |
| 22% | $48,475–$103,350 | $96,950–$206,700 |
| 24% | $103,350–$197,300 | $206,700–$394,600 |
| 32% | $197,300–$250,525 | $394,600–$501,050 |
| 35% | $250,525–$626,350 | $501,050–$751,600 |
| 37% | above $626,350 | above $751,600 |
Why this distinction matters
- For side income and bonuses: use your marginal rate — that's the rate any additional dollar will actually be taxed at.
- For understanding your overall burden: use your effective rate — it reflects what you actually paid relative to your income.
- For raises: moving into a higher bracket never reduces your take-home pay, since only the income above the new threshold is taxed at the higher rate.
- For comparing filing statuses: the same marginal rate can carry a different effective rate, as the MFJ example above shows — bracket width, not just the top rate, determines the average.
Frequently asked questions
What's the difference between effective and marginal tax rate?
Marginal is the rate on your last dollar earned; effective is your total tax divided by total taxable income — always lower under a progressive system.
Why is my effective rate lower than my tax bracket?
Only the income within each bracket is taxed at that bracket's rate — your top slice, not all your income, is taxed at the marginal rate.
Does a raise that pushes me into a higher bracket lower my take-home pay?
No — only the income above the new threshold is taxed at the higher rate. A raise never reduces after-tax income.
Which rate should I use for financial decisions?
Marginal rate for the tax impact of extra income; effective rate for your overall tax burden.
Do state income taxes work the same way?
Some states use progressive brackets like the federal system; others charge one flat rate (making effective and marginal identical); some have no income tax at all.
How does the standard deduction affect these rates?
Brackets apply to taxable income, which is already after the deduction — so your effective rate on gross income is even lower than on taxable income alone.
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Note: Federal tax only using 2025 brackets; excludes state income tax, credits, and the additional Medicare/NIIT surtaxes. Not tax advice. Last reviewed: September 2026.