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Income Tax Calculator

Progressive tax bracket estimate with effective and marginal rates.

Estimate federal-style income tax using a simplified progressive bracket system, and see your effective rate alongside the marginal rate.

Nadia Almasri By Nadia Almasri
Published Last reviewed 1 min read

Inputs

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Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Tax is the sum across brackets: Σ (income_in_bracket × bracket_rate). Effective rate is total tax / total income. Marginal rate is the rate of the highest bracket reached.

In depth

Estimate federal-style income tax using a simplified progressive bracket system, and see your effective rate alongside the marginal rate.

Frequently asked questions

No. It uses a simplified progressive bracket structure for illustration. Real returns include credits, state tax, payroll tax, and situational adjustments — consult a tax professional for filing.