(1) Subject to subsection (2) and except where otherwise expressly provided, this Part shall have effect as respects instruments executed on or after 15 June 2000.

(2) Subsection (1) shall not apply as respects any instrument executed on or before 31 July 2001, where -

(a) the effect of the application of subsection (1) would be to increase the duty otherwise chargeable on the instrument, and

(b) the instrument contains a statement in such form as the Commissioners may specify, certifying that the instrument was executed solely in pursuance of a contract which was evidenced in writing prior to 15 June 2000.

(3) The furnishing of an incorrect certificate for the purposes of subsection (2) shall be deemed to constitute the delivery of an incorrect statement for the purposes of section 1078 of the Taxes Consolidation Act, 1997.