Certificates of insurance (COIs) are documents containing all the essential details of an insurance policy in an easily digestible, standardized format. COI is intended to prove a policy’s status, provide quick access to its coverage details, reduce exposure to risk, and protect against third-party liability. Disclaimer Our content is not in any way legal advice or binding. The information provided by might not be the official legal or full definition. Also when pursuing a specific transaction you are encouraged to conduct your own due diligence and to consult legal counsel as appropriate.