Income Tax Estimator
Get a quick estimate of your federal income tax liability. Enter your income, filing status, and deductions to see your tax bill, effective rate, and marginal bracket. View a breakdown of how your income is taxed across each bracket.
The U.S. federal income tax is a progressive bracket system: your first dollars are taxed at the lowest rate, and successive dollars are taxed at rates that step up as income rises. The result is that your "tax bracket" is not the rate you pay on all of your income — it's just the rate on your last dollar.
This calculator walks income through the IRS brackets for your filing status, applies the standard or itemized deduction, and produces three numbers most people actually care about: total federal tax owed, effective rate (total tax ÷ total income), and marginal rate (the bracket your last dollar falls in). It also shows a stacked breakdown of how each bracket contributes to the total.
The federal tax code is large and full of credits, surcharges, and special rules. This is a planning estimator, not a tax filing tool. It models the basic income-tax structure under current rates; it does not handle the Alternative Minimum Tax, Net Investment Income Tax, self-employment tax, capital-gains preferential rates, or most credits (Child Tax Credit, EITC, education credits). For actual filing, use IRS-approved software or a tax professional.
Inputs
Freelance, investment, rental income, etc.
401(k), HSA, student loan interest, etc.
Only used if standard deduction is off
Results
Federal Tax
$8,341.00
Effective Rate
11.1%
Marginal Rate
22%
Monthly Take-Home
$5,554.92
Income Allocation
Tax by Bracket
Bracket Breakdown
| Bracket | Rate | Taxable Amount | Tax |
|---|---|---|---|
| $0 - $11,600 | 10.00% | $11,600.00 | $1,160.00 |
| $11,600 - $47,150 | 12.00% | $35,550.00 | $4,266.00 |
| $47,150 - $100,525 | 22.00% | $13,250.00 | $2,915.00 |
| $100,525 - $191,950 | 24.00% | $0.00 | $0.00 |
| $191,950 - $243,725 | 32.00% | $0.00 | $0.00 |
| $243,725 - $609,350 | 35.00% | $0.00 | $0.00 |
| $609,350+ | 37.00% | $0.00 | $0.00 |
Formula
How to use this calculator
- Choose your filing status. Married Filing Jointly has the widest brackets; Single is the narrowest. Head of Household is for unmarried filers who pay more than half the cost of a home for a qualifying dependent.
- Enter your gross W-2 income (Box 1 of your W-2). This is your wages before any taxes are withheld.
- Enter "other income" if you have freelance, investment, rental, or other non-wage income. This calculator treats all of it as ordinary income, which is conservative — capital gains and qualified dividends are usually taxed at lower rates.
- Enter above-the-line deductions: traditional 401(k) and IRA contributions, HSA contributions, student loan interest (up to a cap), self-employment tax deduction, and similar adjustments that reduce AGI.
- Choose standard or itemized deduction. Most filers benefit from the standard deduction; itemizing is usually worthwhile only if you have large mortgage interest, state/local taxes (capped at $10K), or charitable giving.
- Review the bracket breakdown. The marginal rate tells you the tax cost of one more dollar earned; the effective rate tells you the share of your income that actually goes to the IRS.
Worked examples
Single filer, $75K gross
Gross income: $75,000 401(k) contribution: $6,000 (above-the-line) Standard deduction (2025): $15,000 AGI: $69,000 Taxable income: $54,000 Federal tax: ≈ $6,217 Effective rate: ≈ 9.0% of gross Marginal rate: 22% The 401(k) contribution saved roughly $1,320 in tax (22% of $6,000) while also adding to retirement.
Married couple, $180K gross, one kid in college
Filing: MFJ Gross income: $180,000 (combined) Above-the-line: $20,000 (401(k)) Standard deduction (2025): $30,000 Taxable income: $130,000 Federal tax: ≈ $17,820 Effective rate: ≈ 9.9% Marginal rate: 22% This estimate excludes the American Opportunity Credit, which could be worth up to $2,500 for the student.
High-earner, marginal vs effective
Single filer, $300,000 gross, $30,000 401(k) contribution AGI: $270,000 Taxable income: $255,000 Federal tax: ≈ $58,470 Effective rate: ≈ 19.5% Marginal rate: 32% Even at the 32% marginal bracket, the effective rate is under 20% — a consequence of the progressive bracket structure. Marketing that quotes "your tax rate" usually means marginal; financial planning should use effective.
When to use this calculator
Use this calculator when planning rather than filing: estimating quarterly payments for self-employment income, deciding between Roth and traditional retirement contributions, modeling the impact of a raise or job change, or sanity-checking your paycheck withholding before the year ends.
It is not a tax preparation tool. It doesn't compute state income tax (rates and rules vary by state), payroll taxes (Social Security and Medicare, totaling 7.65% on wages up to the SS wage base), or any credits beyond the standard/itemized deduction. The IRS Withholding Estimator at irs.gov is a better tool for adjusting W-4 forms; tax software like TurboTax or FreeTaxUSA is the right tool for actual filing.
For a fuller picture of total tax burden, combine this with a state tax calculator and add 7.65% of wages (up to the Social Security wage base) for FICA.
Common mistakes to avoid
- Confusing marginal and effective rates. A 22% marginal bracket does NOT mean 22% of all your income goes to tax — it means 22% of your last dollar. Effective rate is what you actually pay.
- Forgetting that pre-tax 401(k) and HSA contributions lower AGI. People often estimate tax on gross W-2 income and miss the reduction.
- Itemizing when the standard deduction is higher. The 2017 tax law roughly doubled the standard deduction, so the majority of filers no longer benefit from itemizing.
- Treating all income as ordinary. Long-term capital gains and qualified dividends are taxed at 0%, 15%, or 20% (much lower than ordinary brackets). This calculator overstates tax for high investment income.
- Ignoring state income tax. States range from 0% (TX, FL, WA, NV, AK, SD, WY, TN, NH) to 13%+ (CA top marginal). State tax can rival federal for high earners in high-tax states.
- Forgetting tax credits. Credits like the Child Tax Credit ($2,000/child), EITC, and education credits directly subtract from tax owed and can dramatically reduce the final bill.
Frequently Asked Questions
Sources & further reading
- Federal income tax rates and brackets — Internal Revenue Service
- Standard deduction amounts — Internal Revenue Service
- IRS Tax Withholding Estimator — Internal Revenue Service
- Federal tax brackets and rates explainer — Tax Foundation