Know exactly what you owe — and exactly why.

Enter your income and filing status to see exactly how the 2026 U.S. tax brackets apply — marginal rate, effective rate, and every dollar of tax shown bracket by bracket.

See all seven 2026 federal tax brackets in one table — where each bracket starts, ends, how wide it is, and the total tax owed at each ceiling.

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.

See exactly how much tax a Roth IRA conversion triggers — bracket by bracket, with a stacking visualization showing where converted dollars land in the 2026 federal tax schedule.

State income tax calculators for all 50 states and DC — select your state to see its bracket structure and compute your liability, with each rate cited to the state revenue department.

Compare 2026 state income tax across all 50 states and DC for your income level — effective rates ranked lowest to highest, every figure cited to each state's revenue department.

Estimate how much federal tax will be withheld from your paycheck based on your W-4 elections — IRS Publication 15-T Percentage Method, every step shown.

See exactly what's withheld from a bonus check — the flat 22% federal supplemental rate, Social Security, and Medicare — versus the tax the bonus actually adds at filing, bracket by bracket.

See your complete 2026 tax picture in one place — federal income tax, Social Security, Medicare, and state income tax combined into a single effective rate and take-home pay figure.

See every tax deduction on your paycheck — federal income tax withholding, Social Security, Medicare, and state income tax — calculated line by line for your pay frequency and W-4 settings.

Calculate exactly how much a 401(k), HSA, Traditional IRA, or SEP-IRA contribution saves you in taxes — federal income tax savings, FICA savings where applicable, and net cost after all savings.

Calculate Schedule SE self-employment tax on net self-employment income, including the deductible half — cited to IRS Schedule SE instructions and current FICA rates.

Calculate your quarterly estimated tax payments using the safe harbor method — shows the annual and per-quarter amounts with IRS due dates and underpayment threshold cited.