(1)In this Chapter “excluded indexed security” means a security under the terms of which the amount payable on redemption is determined by applying to the amount for which the security was issued the percentage change (if any) over the security's redemption period in—
(a)the value of chargeable assets of a particular description, or
(b)an index of the value of such assets.
(2)The fact that the terms under which the security is issued include a provision to the effect that the amount payable on its redemption must be at least a specified percentage of the amount for which it was issued only prevents it from falling within the definition in subsection (1) if that percentage exceeds 10%.
(3)Interest payable on redemption is ignored in determining for the purposes of this section the amount payable on redemption.
(4)In subsection (1) “redemption period” means—
(a)the period beginning with the date of issue and ending with the date of redemption, or
(b)a period which is or includes almost all that period and only differs from it for purposes connected with giving effect to a valuation in relation to rights or liabilities under the security.
(5)An asset is a chargeable asset for the purposes of subsection (1) if a gain accruing to a person on its disposal would be a chargeable gain for the purposes of TCGA 1992 on the assumptions specified in subsection (6).
(6)The assumptions are that—
(a)the asset is an asset of the person,
(b)the person is not entitled to the exemption conferred by section 100 of TCGA 1992 (exemption for authorised unit trusts etc.),
(c)disposal of the asset by the person would not be treated for income tax purposes as a disposal in the course of a trade, profession or vocation, and
(d)section 116(10) of TCGA 1992 is ignored (chargeable gains on subsequent disposals of qualifying corporate bonds acquired in reorganisations, conversions and reconstructions).
(7)For the purposes of this section—
(a)neither the retail prices index nor any similar general index of prices published by the government of a territory or by an agent of such a government is an index of the value of chargeable assets, and
(b)“redemption”, in relation to a security, does not include its redemption on an occasion which is to be ignored under section 431(1) (excluded occasions of redemption).