How US Federal Tax Brackets Work
The US uses a progressive, marginal tax bracket system — this means you don't pay one flat rate on your entire income. Instead, each portion of your income is taxed at the rate for the bracket it falls into. For example, if you're single and earn $60,000, you don't pay 22% on all $60,000 — you pay 10% on the first bracket, 12% on the next, and 22% only on the portion of income that falls within the 22% bracket. This calculator runs your exact income through every applicable bracket and sums the result.
Taxable Income vs Gross Income
Your taxable income is your gross income minus deductions (like the standard deduction) and exemptions — and tax brackets apply to this reduced number, not your full salary. That's why increasing your deductions (through retirement contributions, for example) can meaningfully lower your effective tax bill.
Effective Rate vs Marginal Rate
Your marginal rate is the rate applied to your last dollar earned (the highest bracket you reach). Your effective rate — shown in this calculator's results — is your total tax divided by your total income, and it's almost always lower than your marginal rate because of how progressive brackets work.
2026 Standard Deduction Amounts
This calculator is updated for tax year 2026 (the brackets the IRS published in Revenue Procedure 2025-32, reflecting changes from the One Big Beautiful Bill Act). If you're taking the standard deduction rather than itemizing, the 2026 amounts are $16,100 for single filers, $32,200 for married filing jointly, and $24,150 for head of household — enter the one that applies to you in the Deductions field above, or your itemized total instead if it's higher.
Important Note for Non-US Users
This calculator estimates US federal income tax only, using current published IRS bracket thresholds. It does not calculate state tax, FICA/payroll tax, or tax obligations in other countries. If you're filing taxes in the UK, Pakistan, or elsewhere, your local tax authority's rules and brackets will differ — this tool is best used as a general educational reference for understanding how progressive taxation works.