Claims-Made vs Occurrence Insurance: Key Differences

Every liability insurance policy has a coverage trigger, which is the mechanism that determines when coverage applies to a claim. The two primary trigger types are claims-made and occurrence. Understanding how each trigger works is essential because choosing the wrong type, or failing to manage your coverage transitions properly, can leave you with devastating gaps in protection.

An occurrence policy covers events that happen during the policy period, regardless of when the claim is eventually filed. If you have an occurrence policy in effect during 2026 and an incident occurs in June 2026, that incident is covered even if the injured party does not file a lawsuit until 2028 or later. The coverage trigger is when the incident occurred, not when the claim was made. This makes occurrence policies simpler to understand and manage.

A claims-made policy covers claims that are first made and reported during the policy period. For a claim to be covered, two conditions must be met: the incident must have occurred on or after the policy's retroactive date, and the claim must be filed and reported while the policy is active. If either condition is not met, the claim is not covered. Claims-made policies are more complex than occurrence policies but are standard in several types of professional liability insurance.

The primary advantage of occurrence policies is their simplicity and permanence. Once an occurrence policy is in effect for a given period, the coverage for events during that period never expires. You do not need tail coverage, prior acts coverage, or careful management of retroactive dates. If an incident happens during your policy period, it is covered regardless of when the claim is eventually filed, even decades later.

This permanence makes occurrence policies the preferred choice for most general liability, commercial auto, and workers' compensation coverage. These types of claims are often straightforward in terms of timing, with claims filed relatively soon after the incident. Occurrence coverage eliminates any concern about timing gaps and provides lasting protection.

The downside of occurrence policies is that they tend to cost more than comparable claims-made policies, particularly in the early years. This is because the carrier assumes open-ended risk for events that occur during the policy period. The carrier must reserve for potential future claims that may not be filed for years, which increases the cost of the coverage.

Occurrence policies are standard for general liability, commercial auto, workers' compensation, and commercial property insurance. They are the industry standard for these coverage types because the timing of claims is generally predictable and the administrative simplicity benefits both carriers and policyholders.

Claims-made policies have a significant advantage in initial cost. First-year premiums for claims-made policies are typically 40 to 60 percent lower than comparable occurrence policies because the carrier's exposure is limited to claims filed during the policy period. However, premiums increase each year as the policy matures and the retroactive date creates an expanding window of potential claims. By the fifth year, premiums for a mature claims-made policy are roughly comparable to occurrence coverage.

Claims-made policies require careful management of retroactive dates and continuity of coverage. Your retroactive date establishes the earliest date from which incidents are covered. When you first purchase a claims-made policy, your retroactive date is typically the policy inception date. If you maintain continuous coverage without any gaps or changes to your retroactive date, your protection builds over time as each renewal year extends coverage for a longer historical period.

The major risk with claims-made policies is what happens when coverage ends. If you cancel your policy, switch carriers without maintaining your retroactive date, or allow a gap in coverage, you lose protection for incidents that occurred during prior policy periods. To maintain coverage after a claims-made policy ends, you need tail coverage (extended reporting period), which allows you to report claims for a specified period after the policy ends. Tail coverage can be expensive, often costing 150 to 250 percent of the final annual premium.

Claims-made policies are standard for professional liability, directors and officers liability, employment practices liability, and cyber liability. These types of claims often involve long delays between the incident and the filing of a claim, making claims-made coverage the industry standard.

If you have a claims-made policy and need to switch carriers, careful management is essential to avoid coverage gaps. The preferred approach is to have your new carrier offer prior acts coverage with a retroactive date that matches your original policy's retroactive date. This means the new carrier picks up coverage for incidents dating back to when you first obtained claims-made coverage, creating seamless continuity.

Not all carriers are willing to offer prior acts coverage, and some may only agree to a retroactive date that matches the new policy's inception date. If this happens, you need tail coverage from your old carrier to protect against claims arising from incidents that occurred during the prior coverage period. Without either prior acts coverage or tail coverage, you have a gap for claims arising from past incidents.

When retiring or closing your business, tail coverage is essential if you had claims-made coverage. Claims can be filed years after your business closes, and without tail coverage, you have no protection. Many carriers offer retirement tails at discounted rates, and some include automatic tail provisions if the policy is canceled for certain reasons. Review your policy's tail provisions before you need them.

If you are purchasing claims-made coverage for the first time, understand that the cost will increase annually as your policy matures. Budget for these increases and factor the total cost of ownership, including potential future tail coverage, into your decision. CPK Insurance can help you model the long-term costs of claims-made versus occurrence coverage for your specific situation.

For most businesses, the choice between claims-made and occurrence is determined by industry practice and carrier availability rather than personal preference. General liability, commercial auto, and workers' compensation are almost exclusively written on an occurrence basis. Professional liability, D&O, EPLI, and cyber liability are almost exclusively written on a claims-made basis. You typically do not have a choice for these standard coverage types.

Where you do have a choice, consider your long-term plans. If you expect to maintain continuous coverage for many years, claims-made policies may offer cost savings in the early years while providing adequate protection over time. If you anticipate changing carriers frequently, occurrence policies are simpler and eliminate the risk of coverage gaps during transitions.

Regardless of which type you have, understanding your policy's trigger mechanism is critical. Know your retroactive dates, understand your tail coverage options, and communicate with your agent before making any changes to your claims-made coverage. A few minutes of proactive planning can prevent devastating gaps in protection.

CPK Insurance advises all clients on the implications of their policy trigger types and helps manage transitions to prevent gaps. If you have questions about your current coverage or are considering changes, contact us for a review.