Known Loss Doctrine
A legal principle that bars coverage for losses the insured knew about or should have known about before the policy was purchased.
What It Is
The known loss doctrine is a fundamental insurance principle that prevents an insured from obtaining coverage for a loss that has already occurred or is substantially certain to occur at the time the insurance is purchased. The doctrine is rooted in the basic concept that insurance transfers the risk of uncertain future events, and a loss that is already known is not an insurable risk.
The known loss doctrine applies differently across lines and policy types. In claims-made professional liability and D&O policies, it manifests through the application question asking whether the insured is aware of any circumstances that could give rise to a claim. An affirmative answer may result in a prior-acts exclusion or a specific exclusion for the known matter. In occurrence-based policies, the doctrine may bar coverage if the insured purchased the policy knowing that damage was already occurring.
The standard for knowledge varies. Some policies and jurisdictions require actual knowledge, meaning the insured specifically knew about the loss. Others apply a constructive knowledge standard, meaning the insured should have known based on available information. The timing of knowledge is also critical: knowledge acquired after policy inception generally does not trigger the known loss doctrine.
Why It Matters for Brokers
Brokers encounter the known loss doctrine most frequently when placing or renewing professional liability, D&O, and cyber policies. Application questions about known circumstances must be answered honestly, and brokers should counsel clients that disclosing a known matter may result in an exclusion for that matter but preserves coverage for everything else. Failing to disclose a known matter and later filing a claim can result in policy rescission, voiding all coverage retroactively.
Real-World Example
A company applies for D&O coverage and the CFO is aware that the SEC has informally inquired about the company's revenue recognition practices but has not issued a formal investigation notice. The application asks about known circumstances. The broker advises full disclosure. The carrier issues the policy with a specific exclusion for any claim arising from the SEC inquiry. Six months later, the SEC opens a formal investigation costing $1.2M in defense. The specific exclusion applies, and this matter is not covered. However, an unrelated securities class action filed the same year is fully covered. Had the CFO not disclosed the SEC inquiry, the carrier could have rescinded the entire policy, leaving both matters uncovered.
Common Mistakes
- 1Advising clients to minimize or omit known circumstances on applications to avoid exclusions, risking policy rescission that eliminates all coverage.
- 2Not understanding that the known loss doctrine differs between occurrence and claims-made policies in its application and consequences.
How brokerageaudit.com Handles This
brokerageaudit.com's Submission Intake module highlights known-loss questions on applications and provides guidance to brokers on how to counsel clients about disclosure obligations. The system tracks disclosed matters and the resulting policy exclusions, ensuring brokers can immediately identify whether a new claim relates to a previously disclosed and excluded matter.