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📋 '''Short rate cancellation''' is a method of calculating the [[Definition:Return premium | return premium]] owed to a [[Definition:Policyholder | policyholder]] when an [[Definition:Insurance policy | insurance policy]] is cancelled before its natural expiration date, under which the insurer retains a larger share of the original [[Definition:Premium | premium]] than a simple pro rata calculation would produce. The additional retention — sometimes called the short rate penalty or short rate factor — compensates the insurer for the fixed costs of [[Definition:Policy acquisition costs | policy acquisition]], [[Definition:Underwriting | underwriting]], and administration that were incurred when the policy was issued and cannot be recovered merely because coverage was terminated early. This cancellation method is most commonly applied when the policyholder initiates the cancellation, as opposed to cancellations initiated by the insurer, which are typically handled on a [[Definition:Pro rata cancellation | pro rata]] basis.

⚙️ The mechanics vary by market and product line, but short rate cancellation generally works through a published table or formula that specifies the percentage of the annual premium the insurer is entitled to retain based on the fraction of the policy period that has elapsed. For example, if a policyholder cancels a twelve-month [[Definition:Property insurance | property insurance]] policy after three months, a pro rata calculation would refund 75% of the annual premium, whereas a short rate table might allow the insurer to retain approximately 35% of the total premium, refunding only 65%. In the United States, short rate tables have historically been included in filed policy forms and are subject to review by state [[Definition:Insurance regulator | insurance regulators]]; in other markets, the penalty may be expressed as a flat administrative charge or a percentage surcharge applied to the earned portion. [[Definition:Commercial insurance | Commercial lines]] contracts often specify the applicable cancellation method explicitly within the policy language or in the declarations page.

💡 From a business standpoint, short rate cancellation exists because the economics of writing a policy are front-loaded: [[Definition:Broker | brokerage]] commissions, policy issuance costs, and the initial [[Definition:Risk assessment | risk assessment]] effort all occur at inception, and these expenditures are not proportionally recoverable if the policy is cut short. Without a short rate mechanism, insurers would face adverse selection — policyholders could bind coverage during high-risk periods and cancel once the exposure diminishes, effectively obtaining below-cost protection. Consumer protection considerations, however, place limits on how steep the penalty can be, and regulators in many jurisdictions require that the short rate schedule be disclosed to the insured at the time of purchase. In practice, the trend in many personal lines markets has moved toward pro rata cancellation or modest flat fees, particularly as digital [[Definition:Policy administration system | policy administration systems]] reduce the marginal cost of policy processing, though short rate provisions remain common in specialty and commercial segments.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Pro rata cancellation]]
* [[Definition:Return premium]]
* [[Definition:Earned premium]]
* [[Definition:Unearned premium]]
* [[Definition:Policy cancellation]]
* [[Definition:Minimum earned premium]]
{{Div col end}}

Definition:Short rate cancellation - Revision history

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