Description: This article provides an overview of activities that should be considered by an actuary when validating a predictive model. It describes several components to consider when validating a predictive model and provides an examination of various methodologies that can be implemented in the validation process.

Description: This article aims to delve into the rationale and calculation logic of the variable fee approach (VFA) which is applied to the insurance contracts with direct participation features under IFRS 17. In actual practice, the variable fee approach can be implemented in two methods, which are from fee income or total cash flows point of view. These two methods will achieve the same outcomes but are featured with different insights and varying degree of operational ease. Detailed roll-forward steps of contractual service margin (CSM) for these two methods are elaborated in the article, along with a numerical example by using a variable universal life product to help the readers comprehend the rationale behind the variable fee approach.