CiteTax
Federal Tax Calculators
Federal income tax uses a progressive bracket system — different slices of your income are taxed at different rates, but only the income within each bracket is taxed at that bracket's rate. It's a critical distinction that most tax tools skip over.
Every calculator here shows its full bracket breakdown and cites each rate to IRS Rev. Proc. 2024-61 — the official IRS document setting 2025 inflation-adjusted thresholds.
Enter your income and filing status to see exactly how the 2025 U.S. tax brackets apply — marginal rate, effective rate, and every dollar of tax shown bracket by bracket.
Open tool →Tax Bracket ExplorerSee all seven 2025 federal tax brackets in one table — where each bracket starts, ends, how wide it is, and the total tax owed at each ceiling.
Open tool →Most people misunderstand how tax brackets work. This tool shows exactly how a raise, bonus, or extra income is taxed — and why your marginal rate isn't what you actually pay.
Calculate federal tax on short-term and long-term capital gains, including the Net Investment Income Tax (NIIT) at high incomes — every threshold cited to IRS guidance.