Cost Calculator AI
Business & StartupPayroll Liability

Payroll Cost Calculator

Calculate recurring employer payroll liabilities per pay period (weekly, bi-weekly, semi-monthly, monthly) including FICA taxes, SUTA, workers comp, and processing fees.

Pay Run Cycle & Wages

Employer Tax Rates & Software Fees

Employer Payroll Liability Formula

Period Total = Gross Wages + (Gross × (FICA % + SUTA % + Workers Comp %)) + Processing Fee; Annual Total = Period Total × Pay Periods
  • FICA Tax: Mandatory 6.2% Social Security (up to annual cap) + 1.45% Medicare (uncapped) = 7.65%.
  • SUTA: State Unemployment Tax Act rates varying by employer experience rating.
  • Pay Periods: Weekly (52), Bi-Weekly (26), Semi-Monthly (24), or Monthly (12).

Step-by-Step Worked Example

Scenario: Running a bi-weekly payroll with $20,000 in gross wages, 10% employer taxes, 1.0% workers comp, and $50 software fee

Calculation Steps:

  1. Employer Taxes Per Period = $20,000 × 0.10 = $2,000
  2. Workers Comp + Software = $200 + $50 = $250
  3. Total Employer Cost Per Period = $20,000 + $2,000 + $250 = $22,250
  4. Annual Gross Wages = $20,000 × 26 = $520,000 / year
  5. Total Annual Employer Payroll Expense = $22,250 × 26 = $578,500 / year
Result: Employer cost is $22,250 per bi-weekly period ($578,500 annually), requiring $2,250 in employer taxes and fees above gross wages each cycle.

How to Use This Calculator

  1. 1Enter total gross employee wages for the pay period.
  2. 2Select your company pay schedule frequency.
  3. 3Enter your specific employer FICA, SUTA, and workers comp insurance rates.

Assumptions & Limitations

  • Calculations represent employer-side obligations and exclude employee withholding deductions.
  • Does not constitute official legal or tax filing calculations.

Frequently Asked Questions

What is the employer share of FICA taxes?

Employers must match employee contributions dollar-for-dollar: 6.2% for Social Security (up to statutory wage thresholds) and 1.45% for Medicare, totaling 7.65%.

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