An amount the insurer will deduct from the loss before paying up to its policy limits. Most property insurance policies contain a per-occurrence deductible provision that stipulates that the deductible amount specified in the policy declarations will be subtracted from each covered loss in determining the amount of the insured's loss recovery. Usually, the amount of the deductible is not subtracted from policy limits.
Definition provided by the International Risk Management Institute (IRMI) Glossary of Insurance.