Workers Comp Calculator
Estimate workers' compensation insurance premium based on payroll, classification code, and experience modification factor.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Workers Comp Calculator
This calculator estimates your annual workers' compensation premium based on payroll, class code rate, experience modification, and optional state multiplier.
- Enter Annual Payroll ($) – Input your total annual payroll in dollars (e.g., 500000). Use whole numbers or decimals.
- Enter Class Code Rate (per $100) – Input the rate for your industry class code (e.g., 3.5). This is the rate per $100 of payroll.
- Enter Experience Modification Factor – Input your E-Mod (typically between 0.5 and 2.0, e.g., 1.0). This adjusts premium based on your claims history.
- Enter State Multiplier (optional) – If applicable, input a state-specific multiplier (e.g., 1.0). Leave blank to default to 1.0.
- Click "Calculate Premium" – The estimated annual premium will appear below, along with the calculation steps.
Formula: Premium = (Payroll / 100) × Class Code Rate × Experience Mod × State Multiplier
All inputs must be non-negative numbers. The Experience Mod must be between 0.5 and 2.0.
Previous Results
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Frequently Asked Questions
Workers' comp insurance provides medical benefits and wage replacement to employees injured on the job.
Premium = (Annual Payroll / 100) × Class Code Rate × Experience Modification Factor × State Multiplier.
It's a multiplier based on your company's past claim history; a factor below 1.0 indicates fewer claims than average.
