Taxation of Chargeable Gains Act 1992

9 (1) If, in the case of a trustees’ disposal, there is, in addition to the qualifying beneficiary, at least one other beneficiary who, at the end of the qualifying period, has an interest in possession in the whole of the settled property or, as the case may be, in a part of it which consists of or includes the shares, securities or asset which is the subject matter of the disposal, only the relevant proportion of the gain which accrues to the trustees on the disposal shall be brought into account under paragraph 6, paragraph 7 or paragraph 8 above (as the case may require) and the balance of the gain shall, accordingly, be a chargeable gain. U.K.

(2) For the purposes of sub-paragraph (1) above, the relevant proportion is that which, at the end of the qualifying period, the qualifying beneficiary’s interest in the income of the part of the settled property comprising the shares, securities or asset in question bears to the interests in that income of all the beneficiaries (including the qualifying beneficiary) who then have interests in possession in that part.

(3) The reference in sub-paragraph (2) above to the qualifying beneficiary’s interest is a reference to the interest by virtue of which he is the qualifying beneficiary and not to any other interest he may hold.