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📐 '''Loss conversion factor''' is a multiplier used in [[Definition:Retrospective rating | retrospectively rated]] [[Definition:Insurance policy | insurance programs]] to load the insured's actual [[Definition:Incurred loss | incurred losses]] with an allowance for [[Definition:Loss adjustment expense (LAE) | loss adjustment expenses]], effectively converting "pure" losses into a figure that reflects the insurer's full cost of handling those claims. Commonly encountered in large-account [[Definition:Workers' compensation insurance | workers' compensation]] and [[Definition:General liability insurance | general liability]] programs, the factor is stipulated in the [[Definition:Retrospective rating plan | retrospective rating plan]] endorsement and typically ranges from roughly 1.05 to 1.20, depending on the [[Definition:Line of business | line of business]] and the insurer's expense assumptions.

⚙️ In a retrospective rating plan, the [[Definition:Premium | premium]] the insured ultimately pays is tied to its own loss experience during the policy period, subject to minimum and maximum premium boundaries. The formula multiplies the insured's [[Definition:Incurred loss | incurred losses]] by the loss conversion factor before adding a [[Definition:Basic premium | basic premium]] charge and applying a [[Definition:Tax multiplier | tax multiplier]]. By embedding [[Definition:Allocated loss adjustment expense (ALAE) | ALAE]] and sometimes a share of [[Definition:Unallocated loss adjustment expense (ULAE) | ULAE]] into the factor, the insurer avoids billing these costs separately and keeps the retrospective adjustment calculation streamlined. The specific factor is typically negotiable: a [[Definition:Risk manager | risk manager]] with a sophisticated [[Definition:Claims management | claims management]] operation that controls defense costs may secure a lower conversion factor than an account where litigation spending is less predictable.

💰 Even a few hundredths of a point on the loss conversion factor can translate into material premium differences for a large insured carrying millions of dollars in losses through the retrospective formula. Savvy [[Definition:Insurance broker | brokers]] benchmark the factor across competing carriers and historical policy periods, treating it as a key negotiation lever alongside the [[Definition:Basic premium | basic premium]] and the maximum/minimum premium constraints. Beyond individual account negotiations, the factor also matters to [[Definition:Actuary | actuaries]] performing [[Definition:Reserve | reserve]] analyses on retrospectively rated books, since it determines how much of the booked premium fluctuates with developing loss experience. A factor set too low under-recovers the insurer's handling costs; set too high, it drives the insured toward alternative risk-transfer mechanisms like [[Definition:Captive insurance company | captives]] or [[Definition:Large deductible program | large-deductible programs]].

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Retrospective rating]]
* [[Definition:Loss adjustment expense (LAE)]]
* [[Definition:Basic premium]]
* [[Definition:Experience modification rate (EMR)]]
* [[Definition:Large deductible program]]
* [[Definition:Captive insurance company]]
{{Div col end}}

Definition:Loss conversion factor - Revision history

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