Free Online US Federal Tax Calculator

Why use US Federal Tax Calculator

• Bracket-by-bracket breakdown shows exactly how much of your income is taxed at each rate -demystifying the marginal vs. effective tax confusion.
• Covers all four filing statuses (single, married filing jointly, married filing separately, head of household) with 2026 thresholds.
• Instantly compares standard vs. itemized deduction so you can see which option saves more before committing.
• Freelancers and side-hustlers can estimate quarterly tax obligations by dividing the annual estimate by four.

How it works

The calculator applies the US progressive tax bracket system for the selected filing status. Your gross income is first reduced by either the standard deduction or your itemized amount, yielding taxable income. That taxable income is then split across brackets -for a single filer in 2026, the first $11,925 is taxed at 10%, the next portion up to $48,475 at 12%, and so on through seven brackets up to 37%. Tax owed in each bracket equals the width of that bracket times its rate. The calculator sums those amounts for total federal tax, then divides by gross income to produce your effective rate. Take-home pay is gross income minus total tax. State taxes, FICA, and credits are not included -this is a federal-only estimate.

About this tool

Estimate your US federal income tax with this free tax calculator. Enter your filing status, gross income, and deduction type to see your estimated take-home pay, total tax owed, effective tax rate, and a bracket-by-bracket breakdown of how your income is taxed. Based on 2026 federal tax brackets with standard deduction amounts for all filing statuses. The calculator shows exactly how much of your income falls into each bracket so you can understand your marginal vs effective tax rate -a distinction that trips up most people. The US progressive tax system applies increasing rates to successive portions of your income: 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Your effective rate is the total tax divided by gross income, and it is always lower than your top marginal bracket. This calculator handles the math so you do not have to look up bracket thresholds and compute each slice manually. Freelancers use it to estimate quarterly payments. Employees use it when evaluating a raise or bonus to see how much actually reaches their pocket. Job seekers comparing offers across states can pair it with a cost-of-living check to make smarter decisions. Unlike tax prep software that requires account creation and upsells premium tiers, this tool runs entirely in your browser with no login, no email, and no data leaving your device. It is not a replacement for professional tax preparation -it does not account for state taxes, credits, AMT, or self-employment tax -but it gives you a fast, clear federal estimate whenever you need one. This tool provides estimates for educational purposes only and does not constitute tax advice.

How to use US Federal Tax Calculator

1. Select filing status. Choose single, married filing jointly, married filing separately, or head of household.
2. Enter income. Input your gross annual income.
3. Choose deduction. Select standard or itemized deduction.
4. View breakdown. See your take-home pay, total tax, and bracket-by-bracket breakdown.

Use cases

• A freelance web developer estimating quarterly tax payments by plugging in projected annual income to see the federal liability before dividing by four.
• A recent college graduate entering their first full-time salary to understand how much of each paycheck goes to federal taxes versus take-home pay.
• A married couple comparing their tax bill when filing jointly versus separately to decide which status saves them more money.
• A side-hustler adding their 9-to-5 salary and Etsy shop revenue together to see which marginal bracket their extra income falls into.
• A retiree entering their pension and Social Security income to estimate whether they will owe federal taxes or stay below the threshold.