US Paycheck Calculator 2025-2026
Understand how much federal income tax, Social Security, and Medicare are withheld from your biweekly, weekly or monthly paycheck. This calculator applies the IRS percentage-method withholding tables from Publication 15-T to show the exact breakdown of your gross pay into deductions and net take-home. Simply enter your hourly rate, hours per week, pay frequency, and filing status (from your W-4), and the calculator annualizes your gross pay, applies the appropriate federal tax brackets for your filing status, calculates 6.2% Social Security tax (capped at $176,100 for 2025) and 1.45% Medicare tax with no cap, and shows any additional Medicare surtax if you exceed $200,000 for single filers or $250,000 for married filing jointly. The result is what you can expect in your bank account after federal tax but before any state income tax, pre-tax benefits like 401k contributions, or other withholdings. Use this tool when you want to verify your paycheck amount or plan your monthly budget. FAQs cover how the annualized withholding method works, what triggers additional Medicare tax, and why your biweekly paycheck differs from double a weekly check due to tax bracket rounding.
A $25/hr, 40 hr/week worker earns $2,000 gross per biweekly period. After federal income tax, Social Security (6.2%) and Medicare (1.45%) a single filer takes home roughly $1,689 per period. Enter your own figures below for an exact breakdown.
How to read the badges beside each field: Official figures come from a cited authority; Regional average and Illustrative assumption values are editable placeholders, so replace them with your own figure before you rely on the result.
How your paycheck is calculated
Every US paycheck deducts three categories of federal tax before you receive your net pay: federal income tax withholding (which depends on your filing status and wages), Social Security tax, and Medicare tax. None of these is optional for employees; they are withheld automatically by your employer.
Step 1: Gross pay
Gross pay for an hourly worker is simply the hourly rate multiplied by hours worked in the pay period. For a biweekly period: hourly rate x (hours per week x 2).
gross pay = hourly rate x hours per week x (52 / pay periods per year)
Step 2: Federal income tax withholding (IRS Pub 15-T, percentage method)
Your employer annualizes the gross pay (multiplies by the number of pay periods per year), applies the IRS Pub 15-T percentage-method table for your filing status to the annualized figure, then divides by pay periods to get the per-period withholding. Any extra withholding from W-4 Step 4c is added.
annualized gross = gross pay x pay periods per year taxable annual wages = annualized gross - standard deduction (built into Pub 15-T) annual federal tax = Pub 15-T percentage-method schedule applied to taxable annual wages federal withholding = (annual federal tax / pay periods) + extra withholding
The 2025 single-filer annualized withholding brackets (IRS Pub 15-T, Table for Percentage Method of Withholding):
| Annualized wage bracket | Rate |
|---|---|
| $0 to $11,925 | 10% |
| $11,925 to $48,475 | 12% |
| $48,475 to $103,350 | 22% |
| $103,350 to $197,300 | 24% |
| $197,300 to $250,525 | 32% |
| $250,525 to $626,350 | 35% |
| Above $626,350 | 37% |
Married filing jointly thresholds are double the single thresholds. Head-of-household thresholds are from IRS Pub 15-T Table 2 and are used directly in the calculator.
Step 3: Social Security and Medicare (FICA)
These flat-rate payroll taxes are applied directly to gross wages each period. Social Security stops once cumulative wages reach the annual wage base.
Social Security = gross pay x 6.2% (wages up to $176,100/year for 2025) Medicare = gross pay x 1.45% (no wage cap) Additional Medicare = max(0, cumulative wages - $200,000) x 0.9% (single)
Step 4: Net pay
net pay = gross pay - federal income tax withheld - Social Security - Medicare (- Additional Medicare if applicable)
Worked example
$25/hr, 40 hrs/week, biweekly pay, single filing status, no extra withholding, 2025.
- Gross pay = $25 x 80 hrs = $2,000.00.
- Annualized gross = $2,000 x 26 = $52,000. The IRS Pub 15-T percentage method first subtracts the standard deduction built into the withholding tables ($15,750 single, 2025), leaving taxable annual wages of $36,250. Tax = 10% on the first $11,925 ($1,192.50) plus 12% on the next $24,325 ($2,919.00) = $4,111.50 for the year. Per-period = $4,111.50 / 26 = $158.13.
- Social Security = $2,000 x 6.2% = $124.00.
- Medicare = $2,000 x 1.45% = $29.00.
- Total deductions = $158.13 + $124.00 + $29.00 = $311.13.
- Net take-home = $2,000.00 - $311.13 = $1,688.87.
These figures use the 2025 IRS Pub 15-T percentage-method tables and the SSA 2025 wage base. State and local income taxes, pre-tax benefit deductions (401k, health insurance) and post-tax deductions are not included; they would reduce taxable wages and increase take-home pay.
Why this estimate can run higher than your actual withholding
The most common surprise with any paycheck estimate is that the federal income tax line looks larger here than the amount your employer actually withholds. This tool annualizes your gross pay and runs it straight through the 2025 percentage-method brackets, so it does not subtract the standard deduction that the real IRS Publication 15-T tables build in ($15,000 for a single filer in 2025). Read the federal figure as a conservative ceiling, then expect your true withholding to sit a little lower once that deduction and any W-4 Step 3 credits are applied.
Two more quirks trip people up. Social Security stops for the year once your wages cross $176,100, then restarts every January, so a high earner can watch take-home jump mid-year and drop again in the new year. The 0.9% Additional Medicare surtax works differently: your employer must start withholding it the moment your pay with that one employer passes $200,000, ignoring your filing status entirely, so a married couple can have too much withheld and reconcile it on Form 1040.
Finally, the post-2020 W-4 no longer uses allowances. If your paycheck looks off, the fix is usually Step 4 (other income, deductions, or extra withholding), not a mythical allowance count. Use the extra-withholding field here to model that change before you file a fresh W-4 with your payroll department.
Frequently asked questions
How is federal income tax withheld from my paycheck?
Your employer annualizes your per-period gross pay, applies the IRS Pub 15-T percentage-method tables for your filing status to get an annual tax figure, then divides by the number of pay periods per year. Any additional per-period withholding you request is added on top. The result is withheld each payday.
What is Social Security tax and who pays it?
Social Security (OASDI) is 6.2% of your gross wages up to the annual wage base ($176,100 for 2025). Your employer matches that 6.2%. Once your cumulative wages exceed the base, no further Social Security tax is withheld for the rest of the year.
What is Additional Medicare Tax?
Employees pay an extra 0.9% Medicare surtax on wages above $200,000 (single filers) or $250,000 (married filing jointly) per year. Employers withhold it once cumulative wages to that employee pass $200,000 in a calendar year, regardless of filing status. Any under- or over-withholding is reconciled on your Form 1040.
Why does my biweekly paycheck differ from my weekly paycheck doubled?
The federal income tax tables are progressive and are applied to an annualized figure. Biweekly pay is annualized over 26 periods, weekly over 52. Because the annualized gross is the same in both cases (rate x hours x 52 weeks), the per-period federal tax should be the same. Small differences can arise from rounding. Social Security and Medicare are flat percentages of gross, so they scale exactly with period size.
Official sources
- Federal withholding tables (2025): IRS Publication 15-T, Percentage Method Tables for Automated Payroll Systems.
- FICA rates and Social Security wage base: IRS Tax Topic 751, Social Security and Medicare Withholding Rates.
- 2025 Social Security wage base ($176,100): Social Security Administration, 2025 COLA Facts Sheet.
- Additional Medicare Tax (0.9%): IRS, Questions and Answers for the Additional Medicare Tax.
Reviewed by the CalculatorHub team, edited by James Graham, 12 June 2026. See our methodology. General information only, not financial or tax advice. Consult a tax professional for advice specific to your situation.