CMI Model 2025 benchmarking survey results
Working Paper 206 contains an anonymised summary of the fourth CMI Mortality Projections Model benchmarking survey, which asked insurer and reinsurer Subscribers about their use of the Model. We were pleased to receive responses from 24 Subscribers, including 17 insurers and 7 reinsurers.
- CMI_2023 was the most commonly used Model version at 31 December 2024 and CMI_2022 was the most commonly used Model version at 31 December 2023.
- Of those respondents who indicated a likely model version for use at 31 December 2025, CMI_2024 is expected to be the most commonly used by number of books, while CMI_2023 is expected to be the most commonly used when weighted by liability.
- We asked respondents to provide an indication of their best estimate view of the specific impact of the pandemic on the trend component of life expectancy. The liability-weighted average impact was a 1.1% fall in life expectancy.
- The paper also contains information on parameters used, life expectancies, and differences between insurers and reinsurers and between longevity and mortality protection books of business.
The Committee hosted a webinar on 18 November 2025 to discuss the results of the 2025 benchmarking survey. A link to the recording of the webinar is available in this document.
These outputs are available to Authorised Users only.
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