Income Tax Calculator

Estimate federal income tax, effective rate, and after-tax income.

Formula & Methodology

Tax = sum of tax owed within each bracket; effective rate = total tax / taxable income.

Worked Example

A single filer with $80,000 taxable income owes roughly $13,000 in federal tax under 2024 brackets, an effective rate near 16%.

Frequently Asked Questions

What are tax brackets?

Federal income tax is progressive: each portion of income in a bracket is taxed at that bracket's rate, so your marginal rate is not applied to your whole income.

Does this include deductions and credits?

It estimates based on the taxable income and filing status you enter. Credits reduce tax directly and are not fully modeled here.

Is this tax advice?

No. Tax law changes yearly and varies by state. Use this for rough estimates and consult a tax professional for filing.

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