Payroll Tax Calculator
Estimate your net paycheck after all deductions including federal income tax, state income tax, Social Security, and Medicare. Enter your salary, filing status, and pre-tax deductions to see your actual take-home pay.
The difference between your gross salary and what actually hits your bank account each pay period is one of the most misunderstood numbers in personal finance. The deductions stack up fast: federal income tax withholding, state income tax, Social Security, Medicare, plus any pre-tax benefits like 401(k), health insurance, HSA, and FSA contributions.
This calculator walks gross pay through all of those deductions to produce a take-home (net) figure for each paycheck. It uses the standard federal withholding tables, federally mandated FICA rates (Social Security and Medicare), and a state rate you set. The result is close to what your real paycheck shows — usually within a few dollars per pay period, depending on your specific state's bracket structure.
Use it to plan a budget around realistic numbers, compare job offers across states with different tax rates, decide how much to contribute to a 401(k), or check whether your W-4 withholding is producing too big a tax refund (which means you're loaning the government money interest-free).
Inputs
Results
Net Pay (per paycheck)
$2,053
Gross Pay (per paycheck)
$2,885
Effective Tax Rate
21.9%
Annual Take-Home
$53,376
Paycheck Breakdown
Annual Tax Breakdown
Formula
How to use this calculator
- Enter your annual gross salary (the number on your offer letter, before any deductions).
- Choose your pay frequency. Bi-weekly (every two weeks, 26 paychecks/year) is most common in the U.S.; semi-monthly (twice a month, 24 paychecks/year) is also common for salaried employees.
- Select filing status — matches what you'll claim on your federal return.
- Enter federal allowances if your W-4 is the older 2019-and-earlier format. Newer W-4s use dependents and income adjustments directly; in that case start with 0.
- Enter your state's income tax rate. For states with no income tax (AK, FL, NV, NH, SD, TN, TX, WA, WY), enter 0.
- Enter per-paycheck pre-tax deductions: 401(k), HSA, health insurance, dental, vision, FSA. These reduce taxable income, which reduces your tax bill.
- Add any extra withholding you want taken out (W-4 line 4c). Useful if you have side income, capital gains, or want to fine-tune to avoid owing at tax time.
Worked examples
Texas vs California, same salary
$100,000 salary, single, no pre-tax deductions, bi-weekly: Texas (0% state tax): Gross/pay: $3,846 Federal + FICA: $1,034 Net: $2,812 California (top marginal 9.3% for this income): Gross/pay: $3,846 Federal + FICA + State: $1,372 Net: $2,474 The Texas job pays about $8,800/year more in take-home for the same gross. Cost of living and other taxes (property, sales) can offset this, but the paycheck difference is real.
The 401(k) tax shield
$80,000 salary, single, 22% marginal federal bracket. Without 401(k): Net per year: ≈ $58,500 With $8,000/yr 401(k) contribution: Net per year: ≈ $52,300 401(k) balance added: $8,000 "Cost" of contribution: $80,000 − $52,300 − $58,500 reduction = ≈ $6,200 You put $8,000 into retirement but only $6,200 came out of your take-home. The IRS effectively contributes $1,800 via lower withholding.
When to use this calculator
Use this calculator any time your situation changes: new job, raise, move to a different state, marriage, kids, increasing your 401(k) percentage. It's also useful when planning a budget — using net (take-home) rather than gross income gives realistic spending numbers.
Limitations: this models a standard W-2 paycheck. It doesn't handle bonuses (which are usually withheld at 22% federal supplemental rate, often higher than your marginal rate, and over-withholding gets refunded at filing), tipped wages, multi-state earnings, or municipal/local income taxes (NYC, Philadelphia, Detroit, some Ohio cities). For self-employment, use the self-employment tax calculator (covers the full 15.3% SE tax).
Common mistakes to avoid
- Treating net pay as available to spend. Net pay is gross minus tax — pre-tax deductions like 401(k) and HSA are still your money, just stashed elsewhere.
- Over-claiming allowances/dependents to maximize current paycheck. You'll owe at tax time, possibly with penalties.
- Forgetting Social Security wage base ($168,600 for 2024, indexed annually). After you cross it, the 6.2% deduction stops mid-year, raising take-home for the rest of the year.
- Ignoring the additional 0.9% Medicare tax on wages above $200,000 (single) — applies to the worker only, not the employer.
- Comparing pre-tax salary across states. Use post-tax (net) for fair comparisons, especially across states with very different tax rates.
- Not adjusting withholding after a major life change. Marriage, a child, or a new pre-tax benefit can change your tax bill substantially.
Frequently Asked Questions
Sources & further reading
- IRS Tax Withholding Estimator — Internal Revenue Service
- Form W-4 (Employee's Withholding Certificate) — Internal Revenue Service
- Topic No. 751 Social Security and Medicare Withholding Rates — Internal Revenue Service