How to use this calculator
- Enter ordinary taxable income after deductions (usd), filing status.
- Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
- Read the result with the assumptions below. Export details or save a second scenario to compare your choices.
Formula and method
Assumptions and limitations
United States; tax year 2026, effective 2026-01-01 to 2026-12-31. Enter taxable ordinary income after deductions. Excludes capital gains, qualified dividends, credits, AMT, NIIT, payroll and state taxes. Not a tax return.
Worked example
For the sample inputs shown above, us federal ordinary income tax — 2026 produces a first result of approximately 5800. The assumptions below explain what this result represents.
What the result means
Estimate US federal ordinary-income tax before credits for single or joint filing.
Common questions
How is the calculation performed?
Apply the 2026 ordinary-income marginal tax bands to taxable income after deductions.
What does the model leave out?
United States; tax year 2026, effective 2026-01-01 to 2026-12-31. Enter taxable ordinary income after deductions. Excludes capital gains, qualified dividends, credits, AMT, NIIT, payroll and state taxes. Not a tax return.
Methodology and transparency
Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.
Background reference: www.irs.gov — financial method. FinanceMath implements its own calculator.
Rule version: us-2026-v1. Effective from: 2026-01-01. Effective through: 2026-12-31.