CMI_2020 consultation

The CMI typically releases an updated version of the CMI Mortality Projections Model each year and we expect to release the next version, CMI_2020, by the end of March 2021. The exceptional mortality experience during the coronavirus pandemic means that a version of CMI_2020 that takes account of mortality data for 2020 in the usual way would be likely to show substantial falls in life expectancy, which we think would be in excess of what most users of the Model would consider reasonable.

We are consulting on two proposed changes to the method for CMI_2020:

  • To address the exceptional data for 2020, we propose to modify the calibration process for the Model so that users could place more or less weight on data for individual years. For the Core version of the Model, we currently propose to place no weight on data for 2020, and full weight on other years, but we will review this in light of mortality experience for the rest of 2020.
  • Unrelated to the experience of 2020, we propose to amend the age range of the dataset that we use to calibrate the Model. The intention of this change is to avoid unrealistically low initial mortality improvements at high ages, caused by limitations in how the Model copes with large historical shifts in mortality improvements that have varied significantly by age.

Working Paper 137 seeks feedback on our proposals. The deadline for responses is 1 November 2020, and we expect to publish the results of the consultation by mid-December.

Updated 12 October 2020: We have issued illustrative software to accompany the consultation. This incorporates our proposed changes, and an illustrative dataset for 2020, consistent with Working Paper 137. The software is intended to allow users to better understand the implications of our proposals, and assist them in responding to the consultation.

Please note that:

  • The illustrative software is provided as a “beta” version on an “as is” and “own risk” basis.
  • Results from CMI_2020 will differ from those of the illustrative software.

Updated 14 December 2020: The consultation closed on 1 November 2020, and the results of the consultation were published in Working Paper 143.

The illustrative software reflects the calibration age range of 20-90 proposed in Working Paper 137. We have not updated it to reflect the revised intention, a calibration age range of 20-100, confirmed in Working Paper 143.



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    Drawing from his most recent book “The New Long Life” and his longevity research Andrew J Scott will outline how longer lives and new technologies will fundamentally reshape how we structure our lives and transform the economy. As well as looking at the agenda this will set governments and corporates he will focus on the implications for you and how you prepare your future career.

  • India Town Hall

    28 January 2021

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    IFoA Immediate Past President John Taylor would like to invite you to the Institute and Faculty of Actuaries’ (IFoA) virtual India Town Hall 2021, hosted by John Taylor with IFoA Council Member Mahidhara Davangere and IFoA Chief Executive, Stephen Mann. 

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  • Health and Care Hot Topics webinar

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    In this webinar, we have two presentations showing the latest research on the implications for life and health insurers of two key issues: genomics and pandemic risk.

    Dr Peter Joshi and Paul Timmers will share their research on how well-established underwriting processes can allow for genomics in predicting expected mortality and morbidity. They will then discuss the potential for stratified screening and personalised medicine to improve health and reduce claim costs.

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    As the world’s attention begins to turn to COP26 later this year in Glasgow, Sarah Gordon (Chief Executive, Impact Investing Institute) will share her vision for how the financial services industry can deliver for people and the planet, as well as how to encourage more investment with the intention to generate positive, measurable social and environmental impact alongside a financial return.

  • Sub-Saharan Africa Town Hall

    26 February 2021

    Spaces available

    IFoA Immediate Past President John Taylor would like to invite you to the Institute and Faculty of Actuaries’ (IFoA) virtual SSA Town Hall 2021, hosted by John Taylor with IFoA Council Members Mukami Njeru, Prosper Matiashe and IFoA Chief Executive, Stephen Mann.

  • MENAP Town Hall

    2 March 2021

    Spaces available

    IFoA Immediate Past President John Taylor would like to invite you to the Institute and Faculty of Actuaries’ (IFoA) virtual MENAP Town Hall 2021, hosted by John Taylor and IFoA Chief Executive, Stephen Mann.