(1) Where the terms of a transfer of property direct that the income arising from the property shall be accumulated either wholly or in part during a period longer than—
(a) the life of the transferor, or
(b) a period of eighteen years from the date of the transfer,
such direction shall, save as hereinafter provided, be void to the extent to which the period during which the accumulation is directed exceeds the longer of the aforesaid periods, and at the end of such allowed period the property and the income thereof shall be disposed of as if the period during which the accumulation was directed to be made had elapsed.
(2) This section shall not affect any direction for accumulation for the purpose of—
(i) the payment of the debts of the transferor or any other person taking any interest under the transfer; or
(ii) the provision of portions for children or remoter issue of the transferor or of any other person taking any interest under the transfer; or
(iii) the preservation or maintenance of the property transferred,
and such direction may be made accordingly.
Legal Commentary & Landmark Judgments: Section 17
Directions requiring the indefinite accumulation of property rents, interest, or income conflict with economic utility and the fundamental principle of immediate beneficial enjoyment.
The statute incorporates three vital exceptions where accumulation beyond the statutory term remains valid: provisions for the payment of the transferor's debts, provisions for raising portions for children or descendants, and directions for the preservation or maintenance of the transferred property.
In commercial trusts and private family endowments, directions to accumulate income for minor beneficiaries are valid up to the statutory ceiling (transferor's life or 18 years). Once the threshold is breached, the income cannot be capitalized and must be distributed to the beneficiaries currently entitled.