Hi Em ,
many thanks on this.
just one more question with regards to csm. in general when we say release of [something] eg reserves we mean: reserves(t+1)-reserves(t).
So i was expecting that the release of the csm would be similarly csm(t+1)-csm(t) that goes to p&l as profit (or loss).
instead i see sth like: -(csm(t)+csm(t)*i) * amortisation_factor. are these equivalent ?
For a General Model (GM), a simplified roll-forward of the CSM for a sample group of contracts would like the following:
CSM(T+1) = CSM(T)
(+) Effect of NB
(+) interest accretion
(*)
(+/-) Changes in BEL+RA related to future service
(-) CSM amortisation
(*)
The items followed by
(*) are those which will be reflected in the P&L (CSM accretion as 'insurance finance income or expenses' and CSM amortisation as a component of 'insurance revenue').
The impact of the other components on the
total insurance liabilities is zero, and this is why these are not released to the P&L. As an example, let's say we changed operating assumptions for the valuation of BEL + RA. Assume the impact of this change is X.
Now:
BEL + RA impact: + X
CSM impact: - X (
changes in BEL+RA related to future service)
Total liability change = 0 = Total P&L impact
Similar to the effect of NB: at inception, the CSM is set to ensure no net gain/loss. So for a profitable group the NB CSM is, by definiton, set to -(NB BEL + NB RA), which gives the total liability (and P&L) impact of 0.
The above is just to illustrate the ideas, in practice things get more messy than this. Examples:
- if an increase in BEL/RA related to future service is greater than the CSM balance, any excess will flow to the P&L as a loss because the CSM cannot be lower than 0
- if you issue NB which is onerous (i.e. BEL + RA > 0 as inception), you'll report a loss immediately, and so there will be a non-zero effect of NB on the P&L.
M.