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📊 '''Rate-making''' is the actuarial and analytical process by which [[Definition:Insurance carrier | insurance carriers]] determine the [[Definition:Premium | premiums]] they will charge for a given line of coverage. Sometimes hyphenated to distinguish it from its closed-form variant "ratemaking," the term refers to the same disciplined exercise: translating [[Definition:Loss experience | loss experience]], [[Definition:Exposure | exposure]] data, [[Definition:Expense loading | expense loads]], and profit targets into a price that is adequate, not excessive, and not unfairly discriminatory — the three standards most [[Definition:State insurance regulator | state regulators]] apply when reviewing rates.

⚙️ The process typically begins with collecting historical [[Definition:Claims data | claims data]] and adjusting it for [[Definition:Loss development | loss development]], [[Definition:Trend factor | trend]], and changes in [[Definition:Policy terms and conditions | policy terms]]. [[Definition:Actuary | Actuaries]] then calculate a [[Definition:Pure premium | pure premium]] — the expected cost of losses per unit of exposure — and layer on provisions for [[Definition:Underwriting expense | underwriting expenses]], [[Definition:Reinsurance | reinsurance]] costs, and a reasonable [[Definition:Profit margin | profit margin]]. In lines subject to [[Definition:Prior approval | prior approval]] regulation, the resulting rate filing must be submitted to the relevant [[Definition:Department of insurance (DOI) | department of insurance]] before it can take effect, whereas [[Definition:File and use | file-and-use]] or [[Definition:Use and file | use-and-file]] states allow quicker market deployment.

💡 Getting rate-making right is foundational to an insurer's financial health. Rates set too low erode [[Definition:Surplus | surplus]] and invite [[Definition:Insolvency | insolvency]] risk; rates set too high drive away policyholders and attract regulatory scrutiny. The discipline also shapes competitive strategy — carriers that leverage advanced [[Definition:Predictive analytics | predictive analytics]] or [[Definition:Telematics | telematics]] data in their rate-making processes can segment risk more precisely, win profitable business, and avoid [[Definition:Adverse selection | adverse selection]]. As [[Definition:Insurtech | insurtech]] platforms accelerate data availability, rate-making is evolving from periodic batch exercises into near-continuous calibration cycles.

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Ratemaking]]
* [[Definition:Rating bureau]]
* [[Definition:Loss ratio (L/R)]]
* [[Definition:Actuarial science]]
* [[Definition:Rating plan]]
* [[Definition:Predictive modeling]]
{{Div col end}}

Definition:Rate-making - Revision history

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