Your marginal rate is the tax on your next dollar. Your effective rate is the share of your income that actually goes to tax. They are almost never the same number, and mixing them up is the source of most bracket myths.
By Amara Taylor
Quick answer: The marginal tax rate is the rate on the top slice of your taxable income, which is the bracket you are “in.” The effective tax rate is your total tax divided by your income. Because each bracket taxes only its own slice, the effective rate is always lower than the marginal rate once you pass the first bracket.
| Term | What it tells you | How to find it |
|---|---|---|
| Marginal rate | What the next dollar of taxable income costs, and what a deduction saves | Look up your taxable income in the brackets for your filing status |
| Effective rate | The average share of your income paid as tax | Total tax divided by taxable income, or by total income |
People quote the effective rate against different bases. Dividing by taxable income gives a higher figure than dividing by total income, because the deduction shrinks the first number. When you compare effective rates, check which one is being used.
A single filer earns $60,000 in 2026 and takes the standard deduction of $16,100. Taxable income is $43,900.
| Step | Amount |
|---|---|
| 10% on the first $12,400 | $1,240 |
| 12% on the next $31,500 ($12,400 to $43,900) | $3,780 |
| Federal income tax | $5,020 |
| Marginal rate | 12% |
| Effective rate on taxable income ($5,020 ÷ $43,900) | 11.4% |
| Effective rate on total income ($5,020 ÷ $60,000) | 8.4% |
This filer is in the 12% bracket, yet only 8.4 cents of each dollar earned goes to federal income tax. The first $12,400 of taxable income was taxed at 10%, and the deduction meant the first $16,100 of pay was not taxed at all. The figures use the IRS 2026 brackets and standard deduction.
Only the dollars above a bracket line are taxed at the higher rate. Suppose a single filer has taxable income of $50,000 and gets a $1,000 raise. The 12% bracket ends at $50,400 for 2026, so $400 of the raise is taxed at 12% and $600 at 22%.
That is $48 plus $132, or $180 of added tax on a $1,000 raise. The filer keeps $820 after federal income tax, and the tax on the first $50,000 does not change. Crossing a bracket line never reaches back to tax earlier dollars at the new rate. Payroll taxes and benefits that phase out at certain income levels are separate, and they can change the picture.
The marginal rate is the number to use when you are deciding whether to change your income or deductions. A $5,000 contribution to a traditional IRA lowers taxable income by $5,000. For someone whose top dollars are taxed at 22% that saves $1,100 in federal income tax. For someone in the 12% bracket the saving is $600. The same logic applies in reverse: extra freelance income of $5,000 adds tax at your marginal rate, not at your average rate.
The effective rate is the better number for budgeting and for comparing yourself with someone else. It answers “what share of my income goes to federal income tax?”
Find your bracket and the tax in each one, or calculate your total tax and effective rate.
Open the tax bracket calculatorPrefer a full estimate? Try the income tax calculator, or read how to choose between the standard and itemized deduction.
This guide is general information, not tax advice. Sources: IRS Rev. Proc. 2025-32, IRS federal income tax rates and brackets. Figures last checked October 8, 2026. See our editorial standards.
Last updated: October 8, 2026 · Written by Amara Taylor, Content Lead, Anchor AI Tools.