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📈 '''Increased limits factor''' is a multiplicative rating element used in [[Definition:Liability insurance | liability insurance]] to adjust a base [[Definition:Premium | premium]] when coverage limits are raised above a standard or basic threshold. In [[Definition:Commercial general liability (CGL) | commercial general liability]] and other casualty lines, the base rate is typically calculated at a benchmark limit—often $100,000 per occurrence in U.S. practice—and the increased limits factor scales that rate upward to reflect the additional exposure assumed at higher [[Definition:Policy limit | policy limits]] such as $1 million or $5 million per occurrence.

⚙️ The factor is derived from [[Definition:Actuarial analysis | actuarial analysis]] of historical [[Definition:Loss distribution | loss distributions]], particularly the tail behavior of claims. Because large losses are disproportionately more uncertain and volatile than smaller ones, the factor is not linear: doubling the limit does not simply double the premium. [[Definition:Rating bureau | Rating bureaus]] like the [[Definition:Insurance Services Office (ISO) | Insurance Services Office (ISO)]] publish tables of increased limits factors by coverage type and territory, which [[Definition:Underwriter | underwriters]] may adopt, modify, or supplement with their own experience data. The factor also incorporates a [[Definition:Risk charge | risk charge]] to account for the greater variability in expected losses at higher attachment points, as well as an allowance for [[Definition:Allocated loss adjustment expense (ALAE) | allocated loss adjustment expenses]] that tend to be higher on large, complex claims.

🔍 Proper application of increased limits factors is critical for maintaining [[Definition:Rate adequacy | rate adequacy]] in casualty portfolios. If the factor understates the true cost of higher limits, an [[Definition:Insurance carrier | insurer]] systematically underprices its book and faces adverse [[Definition:Loss ratio (L/R) | loss ratios]] on severe claims. Conversely, overstating it makes the carrier uncompetitive. Regulators and [[Definition:Reinsurance | reinsurers]] both pay close attention to how companies derive and apply these factors, since they directly affect the sufficiency of [[Definition:Loss reserves | loss reserves]] and the pricing of [[Definition:Excess liability insurance | excess]] and [[Definition:Umbrella insurance | umbrella]] layers. In an era of [[Definition:Social inflation | social inflation]] and rising [[Definition:Nuclear verdict | nuclear verdicts]], revisiting the adequacy of increased limits factors has become a recurring priority for actuarial teams across the industry.

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Loss development factor (LDF)]]
* [[Definition:Rate adequacy]]
* [[Definition:Insurance Services Office (ISO)]]
* [[Definition:Excess liability insurance]]
* [[Definition:Actuarial analysis]]
* [[Definition:Social inflation]]
{{Div col end}}

Definition:Increased limits factor - Revision history

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