2.—(1) In section 248B of the Taxation of Chargeable Gains Act 1992(1) (calculation of relief), for subsections (1) and (2) substitute—
“(1) If the amount or value of the consideration for the disposal of the relinquished interest is equal to or less than the amount or value of the consideration for the acquired interest, the landowner, on making a claim, is to be treated for the purposes of this Act—
(a)as if the consideration for the disposal of the relinquished interest were of such amount as would secure that on the disposal neither a gain nor a loss accrues to the landowner, and
(b)as if the amount or value of the consideration for the acquired interest were reduced by the excess of the amount or value of the consideration for the disposal of the relinquished interest over the amount of the consideration which the landowner is treated as receiving under paragraph (a).
(2) Where the amount or value of the consideration for the disposal of the relinquished interest exceeds the amount or value of the consideration for the acquired interest, then if the excess (“the unexpended consideration”) is less than the amount of the gain (whether all chargeable gain or not) accruing on the disposal of the relinquished interest, the landowner on making a claim is to be treated for the purposes of this Act—
(a)as if the amount of the gain so accruing were reduced to the amount of the unexpended consideration (and, if not all chargeable gain, with a proportionate reduction in the amount of the chargeable gain), and
(b)as if the amount or value of the consideration for the acquired interest were reduced by the amount by which the gain is reduced (or, as the case may be, the amount by which the chargeable gain is proportionately reduced) under paragraph (a).”
(2) The amendment made by paragraph (1) has effect in relation to disposals on or after 1 March 2013.
1992 c. 12. Section 248B was inserted by article 8(1) of S.I. 2010/157.