Understanding Federal Tax Brackets
The U.S. federal income tax system uses progressive tax brackets, meaning your income is divided into portions that are each taxed at increasing rates. A common myth is that moving into a higher bracket means all your income is taxed at the higher rate. In reality, only the income within each bracket is taxed at that rate, which is why your effective tax rate is always lower than your marginal rate.
Why the Difference Matters
Understanding the gap between marginal and effective rates is crucial for financial planning. If you earn $95,000 as a single filer, your marginal rate is 22% but your effective rate is only about 14.5%. This means a $1,000 raise adds only $220 in taxes, not $1,000 multiplied by your effective rate. Never turn down a raise because it "puts you in a higher bracket".
Frequently Asked Questions
Can I end up paying more total tax than I earn by moving into a higher bracket?▾
No. Because of progressive taxation, earning more always results in more after-tax income. Moving into a higher bracket only affects the dollars within that bracket, not your entire income. Your effective rate will always be lower than your marginal rate.
How often do tax brackets change?▾
The IRS adjusts tax bracket thresholds annually for inflation using the Chained Consumer Price Index (C-CPI-U). The seven rate levels (10%, 12%, 22%, 24%, 32%, 35%, 37%) have been in effect since the 2018 tax year under the Tax Cuts and Jobs Act, but the income thresholds increase each year.
What is the difference between taxable income and gross income?▾
Gross income is your total income from all sources. Taxable income is what remains after subtracting adjustments (above-the-line deductions) and either the standard deduction or itemized deductions. Tax brackets are applied to your taxable income, not your gross income.
Why do married couples filing jointly have wider brackets?▾
The wider brackets for married filing jointly are designed to reduce the "marriage penalty," where two earners might pay more combined tax when married than when single. For most brackets, the MFJ thresholds are approximately double the single filer thresholds, though this is not perfectly consistent across all brackets.
Calclypso Editorial Team
Reviewed by certified financial professionals. Last updated: April 2026. Tax brackets reflect 2025 IRS figures. This calculator provides estimates only and should not be used as tax advice.