The Act codifies a number of technical but conceptually distinct ideas that determine whether future interests are valid. The main concepts are perpetuity period, measuring lives, wait and see, special versus general powers of appointment, options and pre-emption rights, determinable interests, accumulations, non-charitable purpose trusts, and judicial reformation.
Perpetuity period. The perpetuity period is the temporal limit within which contingent interests must vest or fail. The Act allows the instrument to specify a perpetuity period in years, but limits that to the lesser of the period specified and 80 years from the date the disposition takes effect (s 6(1)). If an instrument specifies a fixed vesting date instead of a number of years, the intervening years are treated as the period specified (s 6(3)). If no period is determined under the Act, the period is the one established by the rule against perpetuities as affected by the Act (s 6(4)).
Measuring lives. Where the perpetuity period is not fixed under the instrument, the Act provides a hierarchy of lives to be used to measure the period for “wait and see” and related rules. These include persons specified in the instrument, the settlor or donor, persons to whom the disposition is made (including members and potential members of classes), spouses treated as lives in being under s 7, and parents or grandparents in some limited circumstances (s 9(5)-(6)).
Wait and see. The Act adopts a wait and see rule, meaning that certain dispositions are treated as valid until it is demonstrated that vesting must occur after the applicable period. This applies to dispositions that would otherwise be void for remoteness, to conferrals of general powers exercisable by will only, and to other powers or rights, subject to particular conditions and the separate rules in s 11 and s 15 (s 9(1)-(4)).
Powers of appointment. A power of appointment is treated as a special power for perpetuity purposes unless (a) the instrument expressly limits exercise to one person AND (b) that person could exercise it during their lifetime in such a way as to vest the whole interest in themselves immediately without consent or other conditions, except formalities (s 8(1)). Where a power confined to exercise by will only is concerned, it is treated as general for remoteness purposes if it would have been so treated if exercisable by deed (s 8(2)).
Options and pre-emption rights. The Act differentiates options to acquire interests in land and personal property. Certain lease-descriptive options to acquire reverting interests for valuable consideration are excluded from the rule against perpetuities if limited to the lessee and expiring within one year of lease termination (s 15(1)). Other long options to acquire land are void if exercisable beyond statutory maxima, generally 21 years where price is pegged to market value at exercise (s 15(2)(a)), or six years for options where price is not so regulated (s 15(2)(b)). Options to acquire personal property capable of specific performance are void if exercisable beyond 21 years (s 15(4)). Void options are not enforceable and provide no contractual remedy or restitution (s 15(5)).
Determinable interests and rights of entry. The statute applies the rule against perpetuities to possibilities of reverter on determinable fees and resulting trusts on the determination of other determinable interests, with the effect that if the determinable interest does not determine within the perpetuity period it becomes absolute after that period (s 16(1)-(2)). Similar treatment applies to rights of entry for condition broken, subject to a limited transitional exception for dispositions made under a prior Conveyancing Act period (s 16(3)-(4)).
Accumulations and superannuation. The Act limits accumulations so that the power to accumulate income is valid only if the disposition of the accumulated income is or may be valid (s 22(1)). It expressly exempts superannuation, pensions and related funds for employees and certain profession-based funds from the rule against perpetuities so they are not rendered void by it (s 17(1)-(2)).
Non-charitable purpose trusts. The rule that non-charitable purpose trusts are void for remoteness remains in place by default, but the Act applies ss 6 and 9 to such trusts so that their property may be applied for purposes of the trust during the perpetuity period (s 18).
Judicial reformation and relief. The Act provides for declaratory relief as to validity (s 23), mandatory reforming powers to effect the general intentions where a disposition conflicts solely with the rule against perpetuities (s 24), and vesting orders when reformation is refused but a resulting trust has arisen (s 25). The Supreme Court may admit extrinsic evidence and apply “liberal rules of construction” in reforming dispositions (s 24(3)(a)-(b)).
These concepts interact to create a statutory architecture that modifies common law technicalities, offers drafting levers for longer control, preserves certain commercial options, and gives courts instruments to reform or vest property to effect general intentions, within limits the Act prescribes.