Free Financial Calculators

Powered by a comprehensive tax engine covering all 50 states + DC. No login required.

Tax Filing

Tax Refund Estimator

Estimate your federal and state tax refund or amount owed. Full bracket calculation with credits, deductions, FICA, and withholding.

Tax Brackets

Tax Bracket Calculator

See exactly which 2026 federal and state tax brackets your income falls in. Visualize progressive brackets with marginal and effective rates.

Payroll

Paycheck Calculator

Calculate your take-home pay after federal, state, Social Security, and Medicare taxes. See your net pay per paycheck and annually.

Withholding

W-4 Withholding Optimizer

Stop giving the IRS an interest-free loan. We compute your exact tax and tell you what to put on your W-4 to keep more per paycheck.

Retirement

401(k) Contribution Optimizer

Find your optimal 401(k) contribution. Maximize employer match, compare Roth vs Traditional, and see tax savings at every level.

Retirement

RMD Calculator

Calculate Required Minimum Distributions from IRAs and 401(k)s. Uses IRS Uniform Lifetime Table with SECURE 2.0 start ages.

Retirement

Roth Conversion Break-Even

See exactly when a Roth conversion pays off. Models tax cost today vs. tax-free growth, including IRMAA surcharges and state taxes.

Medicare

IRMAA Medicare Surcharge Calculator

Find your Medicare Part B & Part D surcharges based on income. See each IRMAA cliff and how much you'd save by staying below it.

State Taxes

State Tax Comparison

Compare state income taxes side by side. Enter your income and see the exact difference between any two states — all 50 + DC.

Investments

Capital Gains Tax Calculator

Calculate tax on investment gains with proper bracket stacking. Includes NIIT (3.8%), qualified dividends, short-term gains, and state taxes.