IPTM4320 - Purchased life annuities: partial exemption scheme: exempt proportion formula
This formula applies where both the term and the amount of the annuity payments are solely dependent on the duration of human life. This is the most common kind of purchased life annuity. The amount of payment may change, but only in a specified fashion. This might be under a stepped annuity, where the payments increase by a pre-determined fraction at intervals, or, if written on two lives, might reduce on the first death.
Exempt proportion = AP x PP/AV
Where:
AP = the annuity payment
PP = purchase price of the annuity
AV = actuarial value of the annuity payments.
The actuarial value of the annuity payments is their value at the date when the first of the payments starts to accrue. It is determined
- by reference to prescribed tables of mortality, see The Income Tax (Purchased Life Annuities) Regulations 2008 (SI 2008/562)
- taking the age of the life in question in whole years at that date
- with no discount for the time value of money.
If for any reason it is not possible to determine that actuarial value by reference to the prescribed table, the value is to be determined and certified by the Government Actuary.