US Income Tax Brackets Explained
A raise never pushes your whole income into a higher tax rate. How marginal brackets actually work.
Last updated: 2026-07-20
One of the most common tax myths is that earning more can leave you with less because a raise "bumps you into a higher bracket." That's not how it works — and understanding why can ease a lot of anxiety.
Brackets are marginal
The US uses a progressive system: only the income within each bracket is taxed at that bracket's rate. A raise that crosses into a higher bracket is taxed at the higher rate only on the portion above the threshold — never on your whole income.
Marginal vs effective rate
- Marginal rate — the rate on your last dollar earned (your top bracket).
- Effective rate — your total tax divided by total income, always lower than the marginal rate.
Deductions come first
Before brackets apply, the standard deduction (or itemized deductions) and pre-tax contributions reduce your taxable income. That's why your taxable income is usually well below your gross pay. Estimate your federal and state tax with the calculators below.