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💲 '''Composite rate''' is a single, blended [[Definition:Premium | premium]] rate that combines multiple risk factors, coverage elements, or exposure categories into one figure, rather than breaking them out individually. In [[Definition:Insurance | insurance]], composite rating is commonly used in [[Definition:Group health insurance | group health]] and [[Definition:Workers' compensation insurance | workers' compensation]] contexts, where an employer receives one rate per employee or per unit of exposure instead of separate rates for each age band, job classification, or coverage tier. The approach simplifies billing, budgeting, and administration, making it particularly appealing for mid-size and large accounts where granular rating would create unwieldy complexity.

📐 To construct a composite rate, an [[Definition:Actuary | actuary]] or [[Definition:Underwriter | underwriter]] takes the individual rates that would apply to each subgroup — for example, different age or gender cohorts in a health plan — and blends them using the actual or expected distribution of the insured population. The result is a weighted average that, when applied uniformly across the group, produces approximately the same total [[Definition:Premium | premium]] as individually rated components would. Because the rate depends on the specific composition of the group, it must be recalculated at [[Definition:Renewal | renewal]] when the group's demographics or risk profile shifts. In [[Definition:Commercial property insurance | commercial property]] and [[Definition:Commercial general liability insurance (CGL) | general liability]] lines, a composite rate may also describe a single per-unit price that bundles property and liability exposures into one charge per location or per revenue dollar.

🎯 From a practical standpoint, composite rating trades precision for simplicity — and that trade-off has regulatory implications. Some states require [[Definition:Insurance carrier | carriers]] to file and justify their composite methodologies with the [[Definition:State insurance department | state insurance department]], ensuring that the blending process does not result in unfairly discriminatory pricing that subsidizes high-risk groups at the expense of low-risk ones. For [[Definition:Insurance broker | brokers]] advising employer clients, understanding how a composite rate was built is essential when comparing quotes across carriers, since two seemingly similar composite figures can mask very different assumptions about the group's underlying risk. Transparency in composite rate construction also supports better [[Definition:Risk management | risk management]] conversations, helping clients understand which factors are driving their costs.

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Experience rating]]
* [[Definition:Manual rate]]
* [[Definition:Group health insurance]]
* [[Definition:Workers' compensation insurance]]
* [[Definition:Rate filing]]
* [[Definition:Premium]]
{{Div col end}}

Definition:Composite rate - Revision history

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