How to use the Federal Income Tax Calculator 2026
Fill in the fields on the left. Results, charts and the breakdown update instantly as you type or move a slider. Pick your country at the top of the page to switch currency.
Formula
Taxable income = gross − pre-tax contributions − deduction
2026 standard deduction: $16,100 single, $32,200 married jointly, $24,150 head of household
Tax = sum of each bracket's rate × income in that bracket
Frequently asked questions
What is the difference between marginal and effective rate?
Your marginal rate applies only to your last dollar of income. Your effective rate is total tax ÷ income, which is always lower.
Should I itemize?
Only if your itemized deductions (mortgage interest, state and local taxes, charity) exceed the standard deduction.
Results are estimates for information only and are not financial, tax or legal advice. Tax rules, interest rates and fees change, so confirm important numbers with your bank, employer or a qualified adviser. Read our disclaimer.