Workers Compensation Premium Calculator
Last updated: July 2026
Estimate workers compensation premium from payroll, class rate and experience modifier.
Estimated annual workers comp premium
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- Manual premium before modifier: —
- Premium after experience modifier: —
- Effective cost per $100 payroll: —
On this page
Quick summary: Estimate workers compensation premium from payroll, class rate and experience modifier. Enter realistic assumptions and compare more than one scenario before making a financial or insurance decision.
Read the complete guide
What this calculator estimates
Estimate workers compensation premium from payroll, class rate and experience modifier. It is designed for fast planning and comparison in the United States. The output is an estimate, not a binding quote, tax determination, insurance offer, valuation or professional recommendation.
How to use it
Enter values from your payroll records, insurance quote, budget or financial statements. Keep time periods and rates consistent. Select Calculate, review the headline result and supporting figures, then change one assumption at a time to test another scenario.
How the calculation works
Manual premium equals payroll divided by $100 times the class rate. The result is multiplied by the experience modifier, then fees are added.
Important limitations
Actual premiums depend on class codes, state rules, carrier pricing, audits, minimum premiums, discounts and assessments.
Frequently asked questions
Is the result exact?
No. It is a planning estimate based on the values entered.
Can I compare different scenarios?
Yes. Change one input at a time so you can see which assumption changes the result.
Does the calculator store my inputs?
The calculation runs in the browser and does not require an account. Avoid entering unnecessary confidential information.