How It Works
From three numbers to a clear picture.
CompCost IQ is a free educational tool for California employers. It turns your X-Mod into plain-English dollar figures.
- 01
Enter three numbers and tap Calculate
Your current annual workers' comp premium, your current X-Mod and your new or projected X-Mod, plus your business name, your name and employee count. Optionally add class codes and payroll.
- 02
Tap Calculate to see your estimated impact
We show your estimated new annual premium, the annual dollar and percentage change, and the three-year cumulative difference if nothing else changes.
- 03
Explore a 3- or 5-year forecast (optional)
Add your own assumptions for payroll growth, rate changes and future X-Mods to compare baseline, higher-cost and lower-cost scenarios.
- 04
Review claims & renewal readiness (optional)
Enter aggregate claim totals to get a summary, a renewal checklist and questions to ask your broker.
- 05
Download or save
Preview and download a PDF report, or create a private link that expires after 30 days. No account required.
The forecast
The optional forecast carries today's premium forward year by year using the payroll growth, rate change and future X-Mod assumptions you choose. Higher- and lower-cost scenarios widen your rate assumption up and down so you can see a range. These inputs are your own assumptions — not historical data or predictions. For a worked dollar example, see "The math" on the homepage.
Assumptions
- Estimated new premium = current premium × (new X-Mod ÷ current X-Mod).
- All other rating factors (payroll, class codes, carrier rates, schedule credits/debits, fees) are assumed unchanged unless you enter an assumption.
- Forecast payroll growth and rate changes are your own assumptions and compound annually from today's premium.
- Future X-Mods default to your new X-Mod unless you enter a value. CompCost IQ does not predict X-Mods.
- Higher- and lower-cost scenarios shift your assumed rate change up and down by the scenario spread.
About X-Mods and claims
In California, the WCIRB calculates an experience modification by comparing an employer's actual losses with the losses expected for its classifications and payroll, generally over a three-year experience period. Open claim reserves count as incurred losses, so reserves that later decrease may change future experience. Because the formula also depends on expected losses, payroll and rating values, aggregate claim totals alone cannot tell you your official X-Mod.
What it isn't
Illustrative scenario only, assuming all other rating factors remain unchanged. Actual workers' compensation premiums depend on payroll, classifications, carrier rates, policy adjustments and other factors. This is not an insurance quote or an official WCIRB estimate.
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