Formula
Subtract the standard deduction and entered extra deductions from annual income, then apply the marginal federal tax brackets to the remaining taxable income.
US federal tax estimate
US Federal Income Tax Calculator
Estimate federal income tax from income, filing status and deductions. State income tax, payroll tax and credits are separate.
Estimated federal tax
Enter values to calculate Calculation basis date: May 17, 2026. IRS 2026 standard deductions and marginal rate schedule.Calculation Basis and Official Sources
Calculation basis date: May 17, 2026. Uses the 2026 IRS federal tax rate schedule and standard deduction amounts.
- IRS - 2026 federal tax rate schedule and standard deductions
- IRS - Federal income tax rates and brackets
Before filing or planning tax payments, confirm with IRS tools, official forms, a CPA, enrolled agent or qualified tax adviser.
Formula and Interpretation
How to read it
This shows a federal tax estimate, not a refund or amount due. Withholding, credits, payments, penalties and state tax are separate.
This calculator and its examples are for general information and rough estimation only. They are not legal, tax, accounting, payroll, lending, mortgage, investment, insurance, medical or other professional advice.
Rates, bands, thresholds, deductions, credits, local rules, employer settings, lender terms, product rules and personal facts can change. We do not guarantee that the calculations are accurate, complete, current or suitable for your situation.
US note: this page is not legal, tax, accounting, payroll, lending, mortgage, employment, insurance or financial advice. Check IRS, SSA, state agencies, your employer, lender, CPA, attorney or qualified adviser before acting.
Before You Rely on the Result
Practical examples
Estimate federal tax for a single filer with 90,000 USD of income.
Switch to married filing jointly to see how brackets and the standard deduction change.
Add extra deductions only if you have a planning assumption beyond the standard deduction.
What this includes
- Federal marginal tax estimate
- Standard deduction by selected filing status
- Effective federal rate estimate
What this does not include
- Credits, AMT, capital gains and net investment income tax
- Self-employment tax and payroll taxes
- State, city and local income taxes
When to check official sources
Use IRS instructions and a qualified tax adviser before filing, paying estimates or making tax elections.