The valuation of defined benefit interest in family law is a difficult and complicated feature of the Family law (Superannuation) Regulations 2001.
The family law valuation of almost all common defined benefit interests is based on the general principle of:
Fund multiple x Number of Years x Current Salary x Present value Discount
This can, for example been in the formula for the valuation of lump sum defined benefit interest in the growth phase:
ABM x Salary x Fy+m
ABM: is accrued benefit multiple (fund multiple x years service)
Salary: being salary for superannuation purposes at date of valuation
Fy+m: being the present value discount based on the number of years to retirement.
The family law value of a defined benefit interest will increase over time because of the effect of the three factors: