Per-Claim vs Aggregate Limits
Per-claim limits define the maximum the insurer will pay for any single claim, while the aggregate limit caps the total the insurer will pay for all claims during the policy period. Understanding how these two limits interact is essential for sizing coverage appropriately, especially for firms that may face multiple claims in a single year.
Per-Claim Limits
Advantages
- Each claim gets the full per-claim limit, ensuring adequate coverage for individual matters
- Protects against catastrophic single-claim exposure without worrying about other claims reducing availability
- Easier to evaluate whether limits are sufficient by analyzing the firm's largest potential single exposure
- Higher per-claim limits signal financial responsibility to clients and referral partners
Disadvantages
- A high per-claim limit does not protect against the cumulative impact of many smaller claims
- Firms may over-focus on per-claim limits while neglecting the aggregate, which is the true ceiling
Best for: Firms whose primary concern is ensuring sufficient coverage for any individual claim, particularly those handling high-value matters where a single claim could be substantial.
Aggregate Limits
Advantages
- Defines the total available coverage for the entire policy period across all claims
- Provides a clear picture of the firm's maximum insurance protection for budgeting and risk management
- Higher aggregate-to-per-claim ratios (such as 2:1 or 3:1) provide a cushion for multiple claims
Disadvantages
- If the aggregate is too low relative to per-claim limits, one or two claims can exhaust total coverage
- A 1:1 aggregate-to-per-claim ratio means a single claim could consume all available coverage for the year
- Once the aggregate is exhausted, the firm is uninsured for the remainder of the policy period
Best for: Firms that want to ensure adequate total coverage across multiple potential claims in a policy year, particularly those in higher-volume practice areas where frequency is a concern.
Verdict
Per-claim and aggregate limits work together and should not be evaluated in isolation. Most firms should target at least a 2:1 aggregate-to-per-claim ratio to provide a meaningful buffer against multiple claims. A $1M/$1M policy means one claim wipes out all coverage for the year, while a $1M/$3M policy can handle multiple claims, so pay close attention to both numbers when sizing your coverage.
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