What is the primary function of probable maximum loss (PMM) in underwriting and pricing?

• A. PMM determines the exact future loss for each policy.
• B. PMM estimates the worst-case loss probability to help set reserves and determine appropriate premiums.
• C. PMM sets underwriting guidelines independent of data.
• D. PMM calculates commission to agents.

Answer: (B)

Probable Maximum Loss focuses on tail risk—the largest loss that could plausibly happen to a policy or portfolio within a chosen confidence level. In underwriting and pricing, the main use is to estimate that worst‑case loss size at a given probability so the insurer can set appropriate reserves and premiums that reflect this extreme risk. This helps ensure there’s enough capital to cover large losses and that pricing accounts for those tail events. It’s not about predicting an exact future loss for each policy, it doesn’t establish underwriting guidelines independent of data, and it doesn’t relate to calculating commissions.