AY vs C/AY

judyohjudyoh
in W-03-Data

Is there a difference between accident year data aggregation and calendar/accident year aggregation? Are these terms used interchangeably? What is the purpose of using the term C/AY over AY? Is it C/AY because the premiums are coming from a given CY but the losses are coming from the accidents resulting from a given AY (which is the same as CY)?

Comments

  • GrahamGraham

    Where are you seeing the term "calendar/accident year aggregation". If I know the context, I can provide a better answer. In any case however:

    • Accident year data is data that is organized according to when the accident occurred (but that doesn't necessarily mean a triangle of data.)
    • If accident year data is organized into a triangle however, then the development periods are essentially calendar years so that might be what you're referring to.

    And as you alluded to: Premiums are always "calendar year" because premiums are not associated with an accident. All policyholders pay premiums whether they have an accident or not.

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