Once an appropriate pension valuation has been obtained a formula calculates the value of the proportion of the pension to be shared.
The value of the proportion of any rights or interests which a party has or may have in any benefits under a pension arrangement as at the relevant date and which forms part of the matrimonial property by virtue of section 10(5) shall be calculated in accordance with the following formula–
A is the value of these rights or interests in any benefits under the pension arrangement which is calculated, as at the relevant date, in accordance with paragraph (2) of regulation 3 above; and
B is the period of C which falls within the period of the marriage of the parties before the relevant date and, if there is no such period, the amount shall be a zero; and
C is the period of the membership of that party in the pension arrangement before the relevant date.