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S SmartTaxCalcs

All Tax Calculators

10 free calculators, updated for the 2026 tax year.

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All Federal Tax (4) State & Local Tax (2) Self-Employment & Business (3) Tax Planning (1)
Federal Tax

Federal Income Tax Calculator

Estimate your federal income tax, effective and marginal rate, and take-home pay.

Calculate → Federal Tax

Tax Bracket Calculator

Find your marginal and effective tax rate and see every bracket.

Calculate → Federal Tax

Tax Refund Estimator

Estimate your federal tax refund or balance due before you file.

Calculate → Federal Tax

W-4 Calculator

Estimate the right paycheck withholding for your W-4.

Calculate →

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