(1) Section 604A of the Principal Act is amended -

(a) in subsection (2) -

(i) in paragraph (a) -

(I) by the insertion of ", notwithstanding any provision in the Capital Gains Tax Acts fixing the amount of the consideration deemed to be received on a disposal or given on acquisition" after "which",

(II) in subparagraph (i), by the substitution of "purchased" for "acquired", and

(III) in subparagraph (ii), by the substitution of "purchased" for "acquired",

and

(ii) in paragraph (b), by the substitution of "purchased" for "acquired",

(b) in subsection (2A), by the substitution of "purchased" for "acquired", and

(c) in subsection (4)(a), by the substitution of "purchased" for "acquired".

(2) Subsection (1) shall be deemed to have effect in relation to disposals made on or after 1 January 2018.