In an insurance policy, the deductible is the amount of expenses that must be paid out of pocket before an insurer will pay any expenses. In general usage, the term deductible may be used to describe one of several types of clauses that are used by insurance companies as a threshold for policy payments.
Deductibles are typically used to deter large number of trivial claims that a consumer can be reasonably expected to bear the cost of. By restricting its coverage to events that are significant enough to incur large costs, the insurance firm expects to pay out slightly smaller amounts much less frequently, incurring much higher savings. As a result, insurance premiums are typically cheaper when they involve higher deductibles.
Deductibles are normally provided as clauses in an insurance policy that dictate how much of an insurance-covered expense is borne by the policyholder. They are normally quoted as a fixed quantity and is a part of most policies covering losses to the policy holder. The insurer then becomes liable for claimable expenses that exceed this amount (subject to the maximum sum claimable indicated in the contract). Depending on the policy, the deductible may apply per covered incident, or per year. For policies where incidences are not easy to delimit (for example health insurance), the deductible is typically applied per year.