What is a statement to the insurer by the insured that ensures the validity of the insurance policy?

A warranty is a statement or promise made by the insured that is part of the insurance contract, and it ensures the validity of the insurance policy. This statement must be true and can pertain to specific facts about the risk being insured, the insured's qualifications, or certain conditions being met. If a warranty is breached (i.e., if any information provided by the insured is found to be false), this can allow the insurer to void the policy or deny a claim.

In contrast, a guarantee typically refers to a broader promise or assurance, which is not specific to the insurance context. An affidavit is a sworn statement but does not necessarily attach to insurance validity. A declaration provides basic information about the insured and the coverage but does not carry the same binding obligations or conditions as a warranty does.