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給与明細・手取り給料計算機 — 無料オンライン計算ツール | HomeCalcPro

給与明細・手取り給料計算機の即時・高精度シミュレーションと計算式。

Paycheck & Withholding Parameters

Currency
$
$
$/check
$

Net Paycheck Formula

Transparent mathematical methodology explained in plain English.

Net Pay = Gross Pay - (Federal Tax + FICA + State Tax + Pre-Tax + Post-Tax Deductions)

Calculates periodic take-home pay by subtracting mandatory federal income taxes, FICA (6.2% Social Security + 1.45% Medicare), state income taxes, and optional payroll benefits from gross earnings.

Variables Explained:

  • Gross Pay: Total earnings for the pay period before any deductions.
  • Federal Tax: IRS progressive marginal income tax withholding.
  • FICA: Social Security (6.2% up to annual cap) and Medicare (1.45%).
  • State Tax: State-level progressive or flat income tax withholding.
Real Project Example

$75,000 Annual Salary Paid Bi-Weekly in California

Calculating bi-weekly net take-home pay for a single filer with $250/check pre-tax 401(k).

Sample Project Inputs:
Gross Salary:$75,000/yr
Pay Frequency:Bi-Weekly (26 Checks)
State:California
401(k):$250/check
Step-by-Step Calculation:
  1. Gross pay per check: $75,000 / 26 = $2,884.62.
  2. Pre-tax deduction (401k): $250.00 -> Taxable gross: $2,634.62.
  3. Estimated federal income tax: ~$268.30 per check.
  4. FICA: Social Security (6.2%) = $178.85, Medicare (1.45%) = $41.83.
  5. State tax estimate (CA ~6.5% effective): ~$171.25 per check.
  6. Total deductions per paycheck: $268.30 + $178.85 + $41.83 + $171.25 + $250.00 = $910.23.
  7. Net take-home pay: $2,884.62 - $910.23 = $1,974.39.
Calculated Answer:$1,974.39 net take-home pay per bi-weekly paycheck (~$51,334 annually).
Verified Calculation StandardsE-E-A-T Verified

Formulas calibrated against Standard Compound Amortization Algebraic Models & Truth in Lending (TILA) Formula Standards. Calculations are computed 100% client-side in your browser for absolute data privacy.

Knowledge Base

よくある質問 (FAQ): 給与明細・手取り給料計算機

Click any question below to expand quick answers, formulas, and expert tips.

What is the difference between gross pay and net pay?

Gross pay is your total earned income before any withholdings, while net pay (take-home pay) is the actual amount deposited into your bank account after all taxes and benefits are deducted.

How do pre-tax deductions save money on taxes?

Pre-tax deductions (such as traditional 401(k) and health insurance premiums) reduce your taxable income before federal and state taxes are calculated, lowering your overall tax liability.

建築基準および安全に関する注意事項: Estimates are based on standard federal tax brackets and statutory state withholding benchmarks. Actual withholding may vary depending on individual W-4 elections and local municipal taxes.