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💰 '''Large account pricing''' is an [[Definition:Underwriting | underwriting]] and [[Definition:Actuarial science | actuarial]] methodology used by [[Definition:Insurance carrier | insurance carriers]] to develop [[Definition:Premium | premium]] rates for sizable commercial [[Definition:Policyholder | policyholders]] whose individual [[Definition:Loss experience | loss experience]] is statistically credible enough to heavily influence the price they pay for coverage. Unlike [[Definition:Small commercial insurance | small commercial]] accounts, which are typically priced using [[Definition:Manual rate | manual rates]] derived from broad class-level data, large accounts generate sufficient claims volume that their own historical losses become the dominant factor in rate development. This approach is foundational to [[Definition:Commercial insurance | commercial lines]] underwriting for major corporations, public entities, and other organizations with substantial [[Definition:Exposure | exposure]] bases.

📐 The mechanics typically begin with an [[Definition:Experience rating | experience rating]] analysis that blends the account's own loss history with expected class losses, weighted by a [[Definition:Credibility factor | credibility factor]] that reflects the volume of data. For the largest accounts, individual experience may receive 80% or more of the total credibility weighting. Actuaries adjust historical losses using [[Definition:Loss development factor | loss development factors]] to project immature claims to their ultimate values and apply [[Definition:Trend factor | trend factors]] to account for inflation and changing exposure conditions. The resulting [[Definition:Experience modification factor | experience modification]] — or a custom rating plan — then adjusts the base premium up or down relative to the manual rate. Carriers may also incorporate [[Definition:Retrospective rating | retrospective rating]] plans, [[Definition:Large-deductible program | large-deductible structures]], or [[Definition:Loss-sensitive program | loss-sensitive programs]] that tie the final premium directly to the account's actual performance during the policy period, aligning the policyholder's financial incentives with [[Definition:Loss control | loss control]] efforts.

🎯 Getting large account pricing right is a competitive imperative for carriers operating in the [[Definition:Excess and surplus lines | excess and surplus]] or admitted commercial markets. Underprice the account and the carrier absorbs adverse [[Definition:Loss ratio (L/R) | loss ratios]]; overprice it and the account moves to a competitor or opts for higher [[Definition:Self-insured retention (SIR) | self-insured retentions]]. [[Definition:Insurance broker | Brokers]] representing large accounts routinely benchmark carrier proposals, scrutinize the actuarial assumptions behind the pricing, and negotiate terms aggressively. For carriers, sophisticated [[Definition:Data analytics | data analytics]] and [[Definition:Predictive modeling | predictive modeling]] capabilities have become critical differentiators, enabling more granular segmentation and faster turnaround on complex submissions. The quality of large account pricing ultimately shapes a carrier's portfolio composition and long-term [[Definition:Underwriting profit | underwriting profitability]].

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Experience rating]]
* [[Definition:Retrospective rating]]
* [[Definition:Large-deductible program]]
* [[Definition:Manual rate]]
* [[Definition:Loss development factor]]
* [[Definition:Credibility factor]]
{{Div col end}}

Definition:Large account pricing - Revision history

PlumBot: Bot: Creating new article from JSON