Approximate federal income tax using single-filer brackets.
These calculators use standard financial formulas (amortization, compound interest, marginal tax brackets) to estimate results based on the numbers you enter. They don't account for your full financial picture, and results shouldn't be treated as financial, tax, or investment advice. For decisions with real money on the line, check the numbers with a lender, accountant, or financial advisor who can see your complete situation.
US federal income tax is progressive: each dollar you earn is taxed at the rate for its bracket, not one flat rate on total income. This walks your taxable income through 2024 single-filer brackets.
Result is federal income tax only — Social Security, Medicare, state, and local taxes are all separate.
A common misconception is that moving into a higher bracket taxes your entire income at the new rate — it doesn't. Only the portion of income that falls within that bracket is taxed at the higher rate, which is why effective rates always sit well below the top marginal bracket.
On $80,000 taxable income (single filer, 2024): federal tax is $12,653.00, effective rate 15.82%, after-tax income $67,347.00.
Marginal is your last dollar's bracket (22% or 24% for middle earners). Effective is total tax divided by total income and always lower.
No. Enter your taxable income (after standard or itemized deduction) for a realistic result.
State tax, FICA, credits, retirement contributions, HSA, and many other factors change the real number. This is a first-pass estimate.
In the US federal system, no — because only the income within the new higher bracket is taxed at the higher rate, a raise can never reduce your after-tax income overall.