Understanding Claims-Made Policies: A Law Firm Owner's Guide

Claims-made insurance policies are the standard structure for legal malpractice coverage, but their mechanics confuse many attorneys. Unlike occurrence-based policies that cover events happening during the policy period regardless of when the claim is filed, claims-made policies cover claims that are first made and reported during the policy period. This distinction has significant practical implications for law firms, and understanding it is essential to ensuring you have the coverage you think you have.

Claims-Made vs. Occurrence: The Fundamental Difference

An occurrence policy covers any incident that occurs during the policy period, even if the claim is not filed until years later. A workers compensation policy is a common example. If an employee is injured in 2025, the 2025 policy responds even if the claim is not filed until 2027.

A claims-made policy works differently. It covers claims that are first made against you and reported to the insurer during the policy period. The timing of the underlying event matters only in relation to your retroactive date. A malpractice claim filed in 2026 for an error committed in 2024 would be covered by your 2026 policy, as long as 2024 falls on or after your retroactive date, not by your 2024 policy.

This structure means your current in-force policy is your protection. If you let your coverage lapse, you lose the ability to report claims even for errors committed years ago during periods when you were insured.

The Retroactive Date Explained

The retroactive date, also called the prior acts date, is the earliest date from which your claims-made policy will cover alleged errors. When you first purchase malpractice insurance, your retroactive date is typically set to the policy inception date. As you renew year after year, your retroactive date should remain the same while your policy period advances. Over time, this creates a growing window of coverage.

For example, an attorney who first purchased malpractice insurance on January 1, 2020, and has renewed continuously should have a retroactive date of January 1, 2020, on their 2026 policy. This means the 2026 policy covers claims arising from work performed from January 1, 2020, through the end of the 2026 policy period.

Never agree to a policy that advances your retroactive date. If a carrier moves your retroactive date forward at renewal, it effectively excludes coverage for work performed during the eliminated period. This is a significant red flag and should prompt a conversation with your broker.

Prior Acts Coverage

Prior acts coverage refers to the protection your current policy provides for work done in previous years, back to your retroactive date. When you switch carriers, the new carrier's willingness to provide prior acts coverage by matching your retroactive date is critical. Most reputable carriers will match your retroactive date as standard practice, but some may try to advance it, particularly if your claims history or risk profile has changed.

If you are a lateral hire joining a new firm, the firm's policy should cover your prior acts back to an appropriate retroactive date. Discuss this with the firm's managing partner and insurance broker before you start, because gaps in prior acts coverage for lateral hires are a common and dangerous oversight.

The Extended Reporting Period

An Extended Reporting Period, commonly called a tail, is an option to extend the time during which you can report claims after your claims-made policy expires. The tail does not extend your coverage period; it extends the reporting window. Claims covered under a tail must still arise from work performed between your retroactive date and the end of your last regular policy period.

Most policies include a basic automatic ERP of 30 to 60 days at no additional cost. This provides a short window to report claims that arise just after your policy expires. For longer protection, you can purchase a supplemental ERP, which can extend the reporting period for one year, three years, five years, or indefinitely.

Real-World Scenarios

Consider this scenario. Attorney Smith has maintained continuous malpractice coverage since 2018. Her current policy runs from January 1 to December 31, 2026, with a retroactive date of March 15, 2018. In October 2026, she receives a demand letter alleging she made an error in a real estate closing she handled in April 2021. She reports the claim to her carrier during her 2026 policy period. The alleged error occurred after her retroactive date. The claim is covered.

Now consider a different scenario. Attorney Jones had malpractice coverage from 2019 through 2023 but did not renew for 2024 and 2025 because he was taking time off from practice. He obtains new coverage starting January 1, 2026, with a retroactive date of January 1, 2026. In March 2026, a former client sues him for an error made in 2022. The 2022 error predates his current retroactive date and his previous coverage has expired. The claim is not covered by any policy. Had Jones maintained continuous coverage or purchased a tail from his prior carrier, he would have been protected.

Key Takeaways for Law Firm Owners

Never let your claims-made coverage lapse without purchasing a tail or obtaining replacement coverage with a matching retroactive date. Verify your retroactive date at every renewal and immediately flag any attempt to advance it. Report potential claims and circumstances that might give rise to claims promptly, because late reporting can jeopardize coverage. Understand that your current in-force policy is your protection for all prior work back to your retroactive date. When hiring lateral attorneys, ensure the firm's policy covers their prior acts. And budget for tail coverage as part of your long-term financial planning, because eventually every attorney needs it.