Paycheck Calculator

Gross pay per period

grossPay = annualSalary / payPeriods

= $65,000 / 26 periods/year

= $2,500.00

$65,000 annual salary paid over 26 biweekly periods. This is your pre-tax starting point before any deductions, taxes, or withholding.

IRS Publication 15 (Employer's Tax Guide) — pay period definitions

Federal taxable wages

taxableWages = grossPay − preTaxDeductions

= $2,500.00 − $255.00

= $2,245.00

Pre-tax deductions (401k, health insurance, HSA) reduce your taxable wages dollar-for-dollar before brackets are applied. Your $255.00/period in pre-tax deductions saves approximately —/period in federal tax at your 12% marginal bracket.

IRC §125 (cafeteria plans), §401(k), §223 (HSA) — pre-tax treatment per IRS Pub 15-B

Federal income tax withholding

Annualize taxable wages → apply 2024 brackets → divide by pay periods

Annual taxable ≈ $58,370 → marginal bracket: 12% → $5,020.40/yr ÷ 26

= $193.09/period (7.7% effective federal rate)

Your effective federal rate (7.7%) is lower than your marginal bracket (12%) because lower income tiers are taxed at lower rates first. Only income in the top bracket faces the marginal rate — everything below pays less.

IRS Publication 15-T (2024 withholding tables); IRC §1 rate schedules; Rev. Proc. 2023-34

Social Security tax

SS = min(annualGross, $168,600) × 6.2% / periods

= min($65,000, $168,600) × 6.2% / 26

= $155.00/period

Social Security tax applies to gross pay — not taxable wages. Pre-tax 401k and health deductions do NOT reduce FICA. Your income is below the $168,600 SS wage base, so you pay SS on all wages.

IRC §3101; IRS Notice 2023-75 — 2024 SS wage base $168,600; SS rate 6.2%

Medicare tax

Medicare = grossPay × 1.45%

= $2,500.00 × 1.45%

= $36.25/period (no wage cap)

Unlike Social Security, Medicare has no wage base cap — you pay 1.45% on every dollar of gross income. High earners (over $200,000 single / $250,000 married) face an additional 0.9% Additional Medicare Tax not modeled here.

IRC §3101(b); IRC §3102(f) Additional Medicare Tax — IRS Publication 15

State income tax

stateTax = taxableWages × stateTaxRate

= $2,245.00 × 5%

= $112.25/period (4.5% effective state rate)

State tax is modeled as a flat rate on your federal taxable wages (after pre-tax deductions). Actual state rules vary — some states use graduated brackets, different deductions, or no income tax at all. This is an estimate for planning purposes.

Net pay

net = gross − preTax − federal − SS − Medicare − state − postTax

= $2,500.00 − $255.00 − $193.09 − $155.00 − $36.25 − $112.25 − $10.00

= $1,738.41 take-home (69.5% of gross)

69.5% of your gross pay reaches your bank account. The other 30.5% goes to: federal tax 7.7%, FICA 7.6%, state 4.5%, pre-tax deductions 10.2%, post-tax deductions 0.4%.

Annual projection

annualNet = netPay × payPeriods

= $1,738.41 × 26

= $45,198.60/year · $12,911.40 total taxes · 19.9% effective rate

Your annual tax burden: federal $5,020.40, SS $4,030.00, Medicare $942.50, state $2,918.50. Total $12,911.40 in taxes on $65,000 gross — a 19.9% effective overall rate.

IRS Publication 15 — annualization method for withholding

Pre-tax deduction tax savings

savings = preTaxDeductions × marginalRate

= $255.00/period × 12% marginal

= ≈ $30.60/period ($795.60/year) in federal tax avoided

Your pre-tax deductions reduce taxable income before the 12% bracket applies. If you increased pre-tax contributions — say, more to your 401k — the government would fund 12% of that increase through reduced withholding. The actual tax savings are already built into your net pay.

IRC §125 cafeteria plan tax treatment; §401(k) pre-tax contribution rules

Daily and hourly take-home equivalent

daily = annualNet / workDays · hourly = annualNet / 2,080

= $45,198.60 / 260 work days · / 2,080 work hours

= $173.84/day · $21.73/hour (effective take-home rate)

After all taxes and deductions, you effectively earn $21.73/hour — your true hourly take-home rate. This is useful for deciding whether a purchase is "worth" X hours of your time.