Single, $100,000 gross income
- Taxable income
- $83,900.00
- Deduction used
- $16,100.00
- Effective rate
- 13.17%
- Marginal bracket
- 22%
This simplified federal estimate excludes state tax, payroll tax, capital gains, AMT, phaseouts, and many credits.
Income Tax Calculator
Use this free income tax calculator to estimate 2026 U.S. federal income tax, taxable income, effective rate, and marginal bracket from income and filing status.
Formula steps Estimate limits shown Examples included Private history
Formula steps
- Start with $100,000 gross ordinary income.
- Subtract $16,100.00 deduction to estimate taxable income.
- Apply 2026 U.S. federal ordinary income tax brackets by filing status.
- Subtract credits you entered after bracket tax is calculated.
How to use the income tax calculator
- Enter the requested dollar amounts, rates, terms, tax settings, or contribution details.
- Use rates as percentages, such as 6.5 for 6.5%, and check whether a field asks for a monthly or annual amount.
- Press the calculate button to see the answer, supporting metrics, and formula steps.
- Use the result as a planning estimate only, then copy it if the assumptions look right.
Common uses
Estimate 2026 U.S. federal ordinary income tax for planning.
Compare filing statuses with the standard deduction or a custom deduction.
See taxable income, estimated federal tax, effective rate, and marginal bracket.
Use a transparent estimate before checking IRS forms or a tax professional.
Examples
Estimated federal ordinary income tax
Larger standard deduction and joint brackets
Taxable-income estimate
Frequently asked questions
Quick answers about formulas, rates, payment assumptions, estimate limits, examples, and private in-browser history.
What can I use the Income Tax Calculator for?
Use it for quick planning, comparison, and what-if estimates before you check exact numbers with a lender, tax professional, payroll provider, or financial adviser.
How does the Income Tax Calculator calculate the result?
The calculator subtracts the selected deduction from gross income, applies the 2026 U.S. federal ordinary income tax brackets, then subtracts credits you enter.
Is this financial, tax, or legal advice?
This is a simplified federal income tax estimate only. It does not calculate state tax, payroll tax, capital gains, AMT, deductions, credits, phaseouts, penalties, withholding, or filing advice.
Are my finance inputs private?
Yes. The calculator runs in your browser tab. Recent answers stay only on the page while you use it and are not sent to a server.