OpenChainGraph Suite · ART-339 · US Payroll Compliance

Gross-to-Net Payroll Calculator

FICA (Social Security 6.2% up to the 2025 $176,100 wage base, Medicare 1.45% uncapped, Additional Medicare Tax 0.9% on cumulative wages over $200,000), pretax deduction ordering, and net pay for a single pay period. Consumes ART-338 Federal Withholding Calculator's output as its federal_withholding_per_period input.

IRC 3101/3121 SSA 2025 Wage Base FICA Federal Only

🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.

⚠ Federal FICA and net pay only. Not tax advice. State/local withholding and state disability/unemployment employee contributions are out of scope for this tool.

Pay & YTD Tracking

Gross wages this pay period ($)

Federal withholding this period ($)

From ART-338 Federal Withholding Calculator, or your own figure.

YTD FICA wages before this period ($)

Cumulative FICA-taxable wages already paid this calendar year.

Deductions

Pretax 401(k) / HSA / Section 125 ($)

Reduces both FICA wages and federal-taxable wages.

Post-tax deductions ($)

Roth deferrals, garnishments, after-tax premiums. Reduces net pay only.

FICA Detail

Execution Hash (SHA-256)