(1)Except as otherwise expressly provided, the sums allowable as a deduction from the consideration in the computation of the gain accruing to a person on the disposal of an asset shall be restricted to—
(a)the amount or value of the consideration, in money or money’s worth, given by him or on his behalf wholly and exclusively for the acquisition of the asset, together with the incidental costs to him of the acquisition or, if the asset was not acquired by him, any expenditure wholly and exclusively incurred by him in providing the asset,
(b)the amount of any expenditure wholly and exclusively incurred on the asset by him or on his behalf for the purpose of enhancing the value of the asset, being expenditure reflected in the state or nature of the asset at the time of the disposal, and any expenditure wholly and exclusively incurred by him in establishing, preserving or defending his title to, or to a right over, the asset,
(c)the incidental costs to him of making the disposal.
(2)For the purposes of this section and for the purposes of all other provisions of this Act, the incidental costs to the person making the disposal of the acquisition of the asset or of its disposal shall consist of expenditure wholly and exclusively incurred by him for the purposes of the acquisition or, as the case may be, the disposal, being fees, commission or remuneration paid for the professional services of any surveyor or valuer, or auctioneer, or accountant, or agent or legal adviser and costs of transfer or conveyance (including stamp duty) together—
(a)in the case of the acquisition of an asset, with costs of advertising to find a seller, and
(b)in the case of a disposal, with costs of advertising to find a buyer and costs reasonably incurred in making any valuation or apportionment required for the purposes of the computation of the gain, including in particular expenses reasonably incurred in ascertaining market value where required by this Act.
(3)Except as provided by section 40, no payment of interest shall be allowable under this section.
(4)Any provision in this Act introducing the assumption that assets are sold and immediately reacquired shall not imply that any expenditure is incurred as incidental to the sale or reacquisition.