PSI8.2.2 - Lump Sum Benefits and Communication: Commutation Factors - General


(This archived guidance relates to HMRC discretionary practice before the 6th April 2006. For current guidance on Registered Pension Schemes see the Registered Pension Schemes Manual)

The relationship between the lump sum taken and pension given up is commonly expressed as a commutation factor. Where a scheme uses a commutation factor of 12:1 a member can have £12 cash for each £1 pension given up. We require this factor to be used for members without continued rights in order to arrive at the pension equivalent of the value of a lump sum retirement benefit for the purpose of ensuring that total benefits do not exceed Revenue limits. This applies regardless of the age or sex of the scheme member or of the rate of escalation attaching to the pension (see PSI8.2.27et seq). For other purposes schemes may use whatever cash option factors are considered appropriate. The single (12:1) factor was introduced as part of the simplification of practice changes announced in August 1991. It does not apply to members with continued rights (unless the scheme chooses to adopt it for all members regardless of the particular regime which applies to them) and most of what follows in this Section concerns these members, though the underlying general principles remain the same for all. Continued rights members not using the simplified factor of 12:1 must use a commutation factor that is properly related to the capital value of their total benefits. If it is too high insufficient pension is given up for each £1 of lump sum paid, and this could lead to excessive benefits. (Commutation factors should not be confused with annuity rates which are used by Life Offices to calculate the amount of annuity that can be bought for a given cash sum. More information about annuity rates is given in PSI20.3.4.)

Example Man aged 65, final remuneration £12,000, maximum approvable pension is £8,000, maximum allowable lump sum is £18,000. The commutation factor applied for him by his scheme is 9:1, and this, as explained in PSI8.2.12(a), is acceptable.
  1. Pension to be given up is £18,000/9 = £2,000

Benefits are thus a lump sum of £18,000 and a residual pension of £6,000.

  1. If a factor of 10:1 was used the pension to be given up would be £18,000/10 = £1,800.

Residual pension will then be £6,200. But, as explained later, 10:1 is not regarded as acceptable in these circumstances. We take the view that the total pension consists of £6,200 plus an amount given up of £2,000 as in a. above. The excessive factor has thus caused the total benefit of £8,200 to exceed the maximum approvable figure of £8,000.