Professional Liability Insurance
Tail Coverage (Extended Reporting Period) Explained
Tail Coverage (Extended Reporting Period) Explained — what contractors need to know to protect against professional liability claims.
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The Coverage That Protects You After Your Policy Ends
Professional liability insurance (also called Errors & Omissions or E&O) protects contractors when a client claims your professional advice, design input, or project management decisions caused them financial harm. It covers legal defense costs and settlements — gaps that general liability leaves wide open.
What Tail Coverage Does
Tail coverage — formally called an Extended Reporting Period (ERP) — extends the window for reporting claims after a claims-made professional liability policy ends. Without tail coverage, any claim filed after your policy cancels is uninsured, even if the underlying work was done while coverage was active.
When You Need Tail Coverage
Purchase tail coverage when: you cancel your professional liability policy and stop doing professional services work; you switch carriers (unless the new carrier backdates your retroactive date); you retire or close your business; or your insurer non-renews your policy. Any of these scenarios leaves past work exposed without a tail.
How Long Should the Tail Be?
Professional liability claims can surface 5–10 years after project completion. A 3-year tail covers the majority of claims that typically emerge. A 5-year tail provides more complete protection. Unlimited tails are available from some carriers at higher cost. The right length depends on the complexity and scale of your past projects.
How Much Does Tail Coverage Cost?
Tail coverage is typically priced at 150–200% of your final annual premium as a one-time charge. A $3,000 annual policy generates a $4,500–$6,000 tail cost. This is a one-time payment — not annual — that provides coverage for the full tail period.
Tail vs. Prior Acts Coverage
When switching carriers, you have two options: purchase a tail from the departing carrier, or ask the new carrier to include prior acts coverage (backdating the retroactive date). Prior acts is often more cost-effective than purchasing a tail. Work with your agent to evaluate both options when changing insurers.