Federal Income Tax Calculator

Federal Income Tax Calculator

Estimate your federal income tax liability with our free calculator. Understanding the progressive tax bracket system helps you plan for tax season, optimize withholdings, and make informed decisions about income, deductions, and retirement contributions.

2024 Federal Tax Brackets (Single Filers)

Tax Bracket	Income Range	Tax Rate	Tax on Lower Brackets
10%	$0 - $11,600	10%	$0
12%	$11,601 - $47,150	12%	$1,160
22%	$47,151 - $100,525	22%	$5,426
24%	$100,526 - $191,950	24%	$17,168
32%	$191,951 - $243,725	32%	$39,110
35%	$243,726 - $609,350	35%	$55,678
37%	Over $609,350	37%	$183,647

How Progressive Taxation Works

A common misconception: being in the 22% bracket doesn't mean all your income is taxed at 22%. Only income within that bracket pays 22%—lower portions pay lower rates. Someone earning $80,000 doesn't pay $17,600 (22%); they pay approximately $12,200 effective.

Federal Tax Calculator

``javascript function calculateFederalTax(income, filingStatus = 'single') { // 2024 brackets for single filers const brackets = [ { max: 11600, rate: 0.10 }, { max: 47150, rate: 0.12 }, { max: 100525, rate: 0.22 }, { max: 191950, rate: 0.24 }, { max: 243725, rate: 0.32 }, { max: 609350, rate: 0.35 }, { max: Infinity, rate: 0.37 } ];

let tax = 0; let previousMax = 0;

for (const bracket of brackets) { if (income > bracket.max) { tax += (bracket.max - previousMax) * bracket.rate; previousMax = bracket.max; } else { tax += (income - previousMax) * bracket.rate; break; } }

const effectiveRate = (tax / income * 100).toFixed(2); return { tax: tax.toFixed(2), effectiveRate: effectiveRate + '%' }; } ``

Reducing Your Federal Tax Bill

Maximize pre-tax retirement contributions (401k, traditional IRA), use HSA if eligible, claim all eligible deductions (standard or itemized), and consider tax-loss harvesting for investments. Each dollar contributed to a 401k reduces taxable income dollar-for-dollar.

Worked Through the Brackets

On $75,000 of gross income, filing single, taking the $14,600 standard deduction — so $60,400 of taxable income:

Bracket	Range	Income taxed here	Tax
10%	$0 – $11,600	$11,600	$1,160
12%	$11,600 – $47,150	$35,550	$4,266
22%	$47,150 – $100,525	$13,250	$2,915
Total			$8,341

That is a 11.1% effective rate against a 22% marginal rate. The two answer different questions: the marginal rate is what the next dollar costs, and it is the one that decides whether a 401(k) contribution or an extra shift is worth it. The effective rate is what you actually paid, and it is the one to budget against.

The Same Income, Different Sources

Source	Federal tax on it
Wages (above)	$8,341
Self-employment profit	$8,341 income tax plus $10,597 SE tax
Long-term capital gain of $10,000	$1,500 at 15%

Where income comes from changes the bill more than how much of it there is. A self-employed filer at this level pays roughly $10,597 that an employee never sees, because there is no employer paying the other half of FICA.