Why is my effective tax rate lower than my tax bracket?

The US uses a progressive, marginal bracket system. Only the income that falls inside a given bracket is taxed at that bracket's rate — income below it was already taxed at lower rates. Your effective rate is total tax divided by total income, which blends in all those lower rates, so it's always at or below your marginal (top) bracket rate.

Will a raise put me in a higher tax bracket and reduce my take-home pay?

No. Moving into a higher bracket only means the income above that threshold is taxed at the higher rate — it never reaches back and re-taxes income you already earned at a lower rate. A raise can only increase your after-tax pay, never decrease it, under the federal income tax.

Should retirees avoid withdrawing more to stay in a lower tax bracket?

The same marginal logic applies: only the withdrawal dollars inside a higher bracket are taxed at that rate. Under-withdrawing to avoid a bracket that doesn't apply to your whole withdrawal just means living on less than you could otherwise afford. Multi-year tax planning (like Roth conversions) is a real strategy, but it manages your effective rate over time — it isn't about avoiding a single bracket.

What is included in this calculator?

Federal income tax only, using the standard deduction for the selected filing status and tax year. State taxes, FICA, credits, and itemized deductions aren't modeled here — see the Paycheck calculator for a fuller take-home breakdown.

Effective Tax Rate Calculator

See exactly how much federal tax you owe bracket by bracket, and the gap between your marginal rate and your real, effective tax rate — across filing statuses and tax years 2021–2026.

Effective tax rate

11.6%

$9,870 in federal tax on $85,000 — your marginal rate is 22%.

Marginal rate

22%

Total federal tax

$9,870

Taxable income

$68,900

Standard deduction

$16,100

Total deductions

$16,100

Tax owed by bracket

Marginal rate vs. effective rate

Marginal rate (your last dollar)22%

Effective rate (your actual average)11.6%

Your marginal rate only applies to the slice of income inside your top bracket. The shorter green bar — your effective rate — is what you actually pay across all your income.

Bracket	Rate	Income in bracket	Tax in bracket	Running total tax	Running effective rate
$0 – $12,400	10%	$12,400	$1,240	$1,240	1.8%
$12,400 – $50,400	12%	$38,000	$4,560	$5,800	8.4%
$50,400 – $105,700	22%	$18,500	$4,070	$9,870	14.3%

Why marginal and effective rates aren't the same number

"I'm in the 24% bracket" is a statement about your last dollar of income, not your whole income. Every dollar below your top bracket's threshold was taxed at the lower rates that came before it — 10%, then 12%, then 22%, and so on. Your effective rate blends all of that together, which is why it's always lower than the bracket people quote out loud.

This gap is exactly why turning down a raise, a bonus, or extra freelance income to "avoid the next bracket" almost never makes sense — and why retirees who under-withdraw from their accounts for the same reason are usually leaving money on the table.

Read the full explainer on effective vs. marginal tax rates for the complete breakdown, including the retirement-withdrawal version of this mistake.

Rules of thumb

A raise never reduces your take-home pay. The worst case is that the next dollar is taxed at your highest bracket — it's never taxed at a rate that erases the raise.
Effective rate = total tax ÷ total income. It's always at or below your marginal rate, and the gap grows wider the higher your income climbs.
Bracket thresholds move every year. The IRS adjusts them for inflation — switch the year chips above to see how 2021's brackets compare to 2026's.

FAQ

Frequently asked questions

Why is my effective tax rate lower than my tax bracket?: The US uses a progressive, marginal bracket system. Only the income that falls inside a given bracket is taxed at that bracket's rate — income below it was already taxed at lower rates. Your effective rate is total tax divided by total income, which blends in all those lower rates, so it's always at or below your marginal (top) bracket rate.
Will a raise put me in a higher tax bracket and reduce my take-home pay?: No. Moving into a higher bracket only means the income above that threshold is taxed at the higher rate — it never reaches back and re-taxes income you already earned at a lower rate. A raise can only increase your after-tax pay, never decrease it, under the federal income tax.
Should retirees avoid withdrawing more to stay in a lower tax bracket?: The same marginal logic applies: only the withdrawal dollars inside a higher bracket are taxed at that rate. Under-withdrawing to avoid a bracket that doesn't apply to your whole withdrawal just means living on less than you could otherwise afford. Multi-year tax planning (like Roth conversions) is a real strategy, but it manages your effective rate over time — it isn't about avoiding a single bracket.
What is included in this calculator?: Federal income tax only, using the standard deduction for the selected filing status and tax year. State taxes, FICA, credits, and itemized deductions aren't modeled here — see the Paycheck calculator for a fuller take-home breakdown.