What this paycheck calculator does
This tool estimates your US take-home pay per paycheck — what actually lands in your bank account after federal withholding — for any pay frequency and filing status. Enter your gross pay (annual or per-paycheck), pick how often you're paid, add any pre-tax 401(k), HSA or health-premium deductions, and it returns your net pay alongside a full breakdown of federal income tax, Social Security and Medicare.
It models the federal side only: IRS federal income tax withholding plus FICA (Social Security and Medicare). State and local income tax are not included, so your real paycheck may be a bit smaller unless you live in a no-income-tax state. If you're trying to convert an hourly rate to a salary first, start with the Hourly to Salary Calculator and bring the annual figure back here.
How the calculation works
Payroll software doesn't tax each paycheck in isolation — it annualizes your pay, computes the full-year tax, then divides it back across your pay periods. This calculator follows the same IRS Publication 15-T Percentage Method for Automated Payroll Systems (Worksheet 1A) for 2026:
- Annualize gross pay: annual figure, or per-paycheck × pay periods per year (52 / 26 / 24 / 12).
- Federal income tax: subtract pre-tax 401(k) and cafeteria-plan deductions, subtract the standard-deduction adjustment ($12,900 MFJ, else $8,600), then look the result up in your filing-status bracket schedule.
- Social Security: 6.2% of wages up to the $184,500 (2026) wage base.
- Medicare: 1.45% of all wages, plus 0.9% Additional Medicare Tax on wages above $200,000.
- Net: gross minus federal tax, Social Security, Medicare and every pre-tax deduction, divided by your pay periods.
Worked example
These numbers are produced by the same engine that powers the calculator above, so the article can never drift from the math. A single filer earning $65,000 paid biweekly with a 5% traditional 401(k):
| Step ($65,000 · Single · biweekly · 5% 401k) | Amount |
|---|---|
| Annual gross pay | $65,000.00 |
| Traditional 401(k) at 5% (pre-tax, FIT only) | − $3,250.00 |
| Wages subject to federal income tax | $61,750.00 |
| Standard-deduction adjustment (Single) | − $8,600.00 |
| Adjusted annual wage (bracket lookup) | $53,150.00 |
| Federal income tax withheld (annual) | $5,230.00 |
| Social Security 6.2% (on full gross) | $4,030.00 |
| Medicare 1.45% (on full gross) | $942.50 |
| Net pay per year | $51,547.50 |
| Net pay per biweekly paycheck (÷ 26) | $1,982.60 |
2026 federal withholding brackets by filing status
These are the IRS Publication 15-T Standard Withholding Rate Schedules for 2026 — the exact tables this calculator's engine looks up after your annualized wages are reduced by pre-tax deductions and the standard-deduction adjustment. They're withholding brackets used by payroll systems, not the individual income-tax brackets you'll see when you file Form 1040.
| Single or Married Filing Separately (std-deduction adjustment $8,600.00 already subtracted) | ||
|---|---|---|
| Adjusted annual wage | Base tax | + Rate over bracket start |
| $0 – $7,500.00 | $0.00 | 0% |
| $7,500.00 – $19,900.00 | $0.00 | 10% |
| $19,900.00 – $57,900.00 | $1,240.00 | 12% |
| $57,900.00 – $113,200.00 | $5,800.00 | 22% |
| $113,200.00 – $209,275.00 | $17,966.00 | 24% |
| $209,275.00 – $263,725.00 | $41,024.00 | 32% |
| $263,725.00 – $648,100.00 | $58,448.00 | 35% |
| $648,100.00+ | $192,979.25 | 37% |
| Married Filing Jointly (std-deduction adjustment $12,900.00 already subtracted) | ||
|---|---|---|
| Adjusted annual wage | Base tax | + Rate over bracket start |
| $0 – $19,300.00 | $0.00 | 0% |
| $19,300.00 – $44,100.00 | $0.00 | 10% |
| $44,100.00 – $120,100.00 | $2,480.00 | 12% |
| $120,100.00 – $230,700.00 | $11,600.00 | 22% |
| $230,700.00 – $422,850.00 | $35,932.00 | 24% |
| $422,850.00 – $531,750.00 | $82,048.00 | 32% |
| $531,750.00 – $788,000.00 | $116,896.00 | 35% |
| $788,000.00+ | $206,583.50 | 37% |
| Head of Household (std-deduction adjustment $8,600.00 already subtracted) | ||
|---|---|---|
| Adjusted annual wage | Base tax | + Rate over bracket start |
| $0 – $15,550.00 | $0.00 | 0% |
| $15,550.00 – $33,250.00 | $0.00 | 10% |
| $33,250.00 – $83,000.00 | $1,770.00 | 12% |
| $83,000.00 – $121,250.00 | $7,740.00 | 22% |
| $121,250.00 – $217,300.00 | $16,155.00 | 24% |
| $217,300.00 – $271,750.00 | $39,207.00 | 32% |
| $271,750.00 – $656,150.00 | $56,631.00 | 35% |
| $656,150.00+ | $191,171.00 | 37% |
How each deduction is taxed
Pre-tax deductions don't all behave the same way. This is the reference that explains why your Roth contribution and a traditional 401(k) hit your paycheck so differently:
| Deduction | Federal income tax | Social Security / Medicare | Note |
|---|---|---|---|
| Traditional 401(k) | Reduces (pre-tax) | No — still taxed | Deferral is in W-2 Boxes 3 & 5 |
| HSA (via cafeteria plan) | Reduces (pre-tax) | Reduces (pre-tax) | Section 125 — most tax-advantaged |
| Health insurance premium | Reduces (pre-tax) | Reduces (pre-tax) | Section 125 cafeteria plan |
| Roth 401(k) | No | No | Post-tax — not modeled here |
Assumptions and limitations
This is a withholding estimate for tax year 2026, not a tax-return calculation. It assumes a 2020-or-later Form W-4 with the Step 2 checkbox unchecked, no dependent credits (Step 3) and no other-income or extra-withholding entries (Step 4). Key limitations:
- Federal only — no state or local income tax, no state disability/unemployment insurance.
- No post-tax deductions (Roth 401(k), garnishments) and no employer 401(k) match (a match doesn't affect take-home pay).
- Per-period figures divide the annual amounts evenly; a real paystub may differ slightly at year-end as Social Security nears its cap.
- Your final refund or balance due on Form 1040 depends on total income, credits and deductions this tool doesn't model. To gauge a raise's impact, pair it with the Salary Hike Calculator.
Frequently asked questions
How is federal income tax withheld from my paycheck calculated?+
This calculator uses the IRS Publication 15-T Percentage Method for Automated Payroll Systems (Worksheet 1A) — the same method most payroll software uses. Your gross pay is annualized, pre-tax deductions are subtracted, a standard-deduction adjustment is applied, and the result is looked up in the IRS's annual bracket schedule for your filing status. The tentative annual withholding is then divided evenly across your pay periods. This is a withholding estimate, not your final tax liability — your actual refund or amount owed is determined when you file Form 1040.
Why does my 401(k) contribution lower my federal tax but not my Social Security or Medicare tax?+
Traditional 401(k) contributions are pre-tax for federal income tax purposes — the IRS excludes them from Box 1 wages on your W-2, so they reduce the wages used to calculate federal withholding. However, the IRS still counts them as Social Security and Medicare (FICA) wages (Boxes 3 and 5 include the deferral). So increasing your 401(k) percentage lowers your federal income tax withholding but leaves your Social Security and Medicare tax unchanged.
Do HSA contributions and health insurance premiums reduce my taxes?+
Yes — when contributed through an employer's Section 125 cafeteria plan (the typical payroll deduction), HSA contributions and your share of health insurance premiums are pre-tax for both federal income tax AND FICA (Social Security and Medicare). That makes them more tax-advantaged than a traditional 401(k), which only reduces federal income tax wages, not FICA wages.
What is the Social Security wage base and how does it affect my paycheck?+
The Social Security wage base is the maximum amount of earnings subject to the 6.2% Social Security tax in a given year — $184,500 for 2026. Once your year-to-date wages exceed that amount, Social Security tax stops being withheld for the rest of the year, and your take-home pay increases slightly (though Medicare tax, which has no cap, continues). This calculator applies the cap automatically based on your annualized gross pay.
What is the Additional Medicare Tax and when does it apply?+
An extra 0.9% Medicare tax applies to wages above $200,000 in a calendar year, on top of the standard 1.45% Medicare rate. Employers must withhold this additional amount once an employee's wages cross $200,000, regardless of filing status — even though the individual liability threshold on your tax return can differ ($250,000 for married filing jointly, $125,000 for married filing separately, $200,000 for everyone else). This calculator models the employer withholding rule.
Does this calculator include state or local income tax?+
No — this calculator is federal-only. State and local income tax withholding vary significantly (some states have no income tax at all, others have progressive brackets or flat rates, and many cities add their own local tax). Your actual take-home pay will typically be lower than shown here once state/local withholding is factored in, unless you live in a no-income-tax state.
How does pay frequency (weekly, biweekly, semimonthly, monthly) affect my results?+
Your annual federal tax, Social Security and Medicare are calculated once from your annualized gross pay, then divided evenly by the number of pay periods per year: weekly = 52, biweekly = 26, semimonthly = 24, monthly = 12. Your annual take-home pay is the same regardless of frequency, but the per-paycheck amount differs — for example, a biweekly paycheck (26/year) will be a smaller dollar amount than a semimonthly paycheck (24/year) for the same annual salary, since it's split more ways.
What's the difference between entering my gross pay as 'annual' vs 'per paycheck'?+
Both options describe the same income, just entered differently for convenience. If you know your annual salary, enter it with the 'Annual' toggle. If you only know what shows up on a single paycheck before deductions, switch to 'Per paycheck' and the calculator will annualize it using your selected pay frequency (gross per period × pay periods per year) before computing taxes.
How does filing status change my withholding?+
Filing status determines which IRS bracket schedule and standard-deduction adjustment apply. Married Filing Jointly has the widest brackets and the largest standard-deduction adjustment ($12,900), so a given income is taxed less per dollar than the same income filed as Single. Head of Household sits between Single and MFJ. Married Filing Separately uses the same schedule as Single. Selecting the correct status is one of the biggest levers on your withholding estimate.
Is this the same as the amount I'll owe or get refunded when I file my tax return?+
No. This calculator estimates paycheck withholding, not your final tax liability. Your actual liability on Form 1040 depends on your total income for the year, credits (like the Child Tax Credit or Earned Income Tax Credit), other income sources, itemized vs. standard deduction, and any W-4 adjustments (extra withholding, dependents, other income) not modeled here. If your withholding differs from your actual liability, you'll get a refund or owe the difference when you file.
Why is my take-home pay lower than my gross pay divided evenly?+
Take-home pay is gross pay minus federal income tax withholding, Social Security (6.2%), Medicare (1.45%, plus 0.9% above $200,000), and any pre-tax deductions you've entered (401(k), HSA, health premiums). Together these can reduce a paycheck by 15–35% or more depending on income level and filing status, before even accounting for state tax, which this calculator does not include.
Does increasing my 401(k) contribution reduce my take-home pay dollar-for-dollar?+
Not quite — it reduces it by less than a dollar for each dollar contributed, because the contribution also lowers your federal income tax withholding. For example, a $100 increase in 401(k) contributions typically reduces take-home pay by somewhere between $70 and $90, depending on your marginal federal bracket, because you’re saving on tax you’d otherwise pay on that $100. Try adjusting the 401(k) percentage in the calculator to see the effect on your own numbers.
What are the 2026 federal withholding brackets used by this calculator?+
This calculator uses the IRS Publication 15-T (2026) Standard Withholding Rate Schedules — three tables (Single/MFS, Married Filing Jointly, Head of Household), each with a base tax and marginal rate per income band after the standard-deduction adjustment is subtracted. These are withholding brackets, built into payroll software, and are slightly different from the individual tax brackets you'll see on Form 1040 at filing time. The full tables are reproduced below the worked example on this page.
Disclaimer
Sources
- IRS Publication 15-T (2026) — Federal Income Tax Withholding Methods, Percentage Method Worksheet 1A
- IRS Topic no. 751 — Social Security and Medicare Withholding Rates
- IRS Topic no. 560 — Additional Medicare Tax
- IRS FAQ — Are Retirement Plan Contributions Subject to Withholding for FICA, Medicare or Federal Income Tax?
- Social Security Administration — Contribution and Benefit Base
Formula and data last reviewed by the TheCalculatorHive team on 8 July 2026. Figures are for general information, not professional advice.
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