Workers Comp Calculator
Estimate your workers compensation insurance premium based on your payroll, industry classification, and state. Get annual and monthly cost breakdowns.
Total annual wages for all employees
Industry classification affects the base rate
State where employees are located
Enter your payroll details, then click Calculate to estimate your workers comp premium.
How Workers Comp Premiums Are Calculated
How Workers Comp Premiums Are Calculated
Workers compensation insurance premiums are based on a formula that accounts for your payroll size, the risk level of your industry, and state-specific factors. Understanding this formula helps you budget accurately and find ways to reduce costs.
The Premium Formula
The basic workers comp premium formula is:
Premium = (Annual Payroll / 100) x Class Rate x State Multiplier
The class rate reflects the risk associated with your industry. Office workers might have a rate of $0.25 per $100 of payroll, while construction workers could be $5.00 or more. These rates are set by rating bureaus like NCCI based on historical claims data for each job classification.
State Variations
Each state has its own workers comp system and rate structure. States like California and New York tend to have higher premiums due to more generous benefit requirements and higher medical costs. States like Texas and Florida generally have lower rates. Some states are monopolistic, meaning you must buy coverage from a state fund.
Experience Modification Rate
Beyond the base calculation, your company's claims history affects your premium through the Experience Modification Rate (EMR or e-mod). An EMR of 1.0 is average. Companies with fewer claims get a rate below 1.0 (a discount), while those with more claims get a rate above 1.0 (a surcharge). A strong safety program that prevents workplace injuries is the best way to keep your EMR low and your premiums affordable.