Definition:Per occurrence deductible
📋 Per occurrence deductible is the portion of a covered loss that the policyholder must absorb each time a distinct occurrence triggers the insurance policy. It resets with every qualifying event, meaning the insured bears the deductible amount anew for each occurrence rather than satisfying a single threshold for the entire policy period. This structure is standard across commercial property, general liability, and many casualty lines, and it appears prominently in reinsurance contracts — particularly per occurrence excess of loss programs — where the cedent's retention functions as a deductible on each event.
⚙️ Each time an insured event occurs, the policyholder pays losses up to the deductible amount before the insurer's obligation begins. If a commercial property policy carries a $100,000 per occurrence deductible and the insured suffers two separate fire incidents during the policy year, the insured absorbs $100,000 on each fire independently. This contrasts with an aggregate deductible, which accumulates all losses until a single cumulative threshold is met. The definition of occurrence in the policy governs how losses are grouped — a critical determination when multiple losses arise from related circumstances, such as a windstorm damaging several insured locations. In jurisdictions like the United States, standard ISO policy forms define occurrence broadly, while bespoke manuscript forms in the London market or specialty lines may adopt narrower or tailored definitions.
💡 Per occurrence deductibles serve as a risk-sharing mechanism that aligns the insured's incentives with prudent loss prevention and claims management, since the insured bears meaningful first-dollar cost on every event. For insurers, the deductible eliminates small, frequent claims — often called attritional losses — from their portfolio, reducing administrative expense and allowing them to focus underwriting capacity on more severe exposures. The size of the per occurrence deductible is a key negotiating point between brokers and underwriters, directly influencing premium pricing: higher deductibles translate into lower premiums, all else being equal. Risk managers at large corporates frequently select elevated deductibles as a deliberate risk retention strategy, retaining predictable frequency losses internally while transferring catastrophic severity to the insurance market.
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