3. In regulation 2 (interpretation) at the appropriate points in the alphabetical list insert the following definitions—
““closed tax year” means any tax year preceding the current year, and cognate expressions shall be construed accordingly;”;
““HMRC” means Her Majesty’s Revenue and Customs;”;
““qualifying payment” means a payment which becomes retrospective employment income as a relevant payment (including a notional payment);”;
““the relevant time”, in relation to retrospective employment income, has the meaning given by section 710(7) of ITEPA, as modified by subsection (7A) of that section, but subject to section 94(5)(c) of the Finance Act 2006;”;
““retrospective contributions regulations” has the meaning given by regulation 1(2) of the SSC Regulations;”;
““retrospective employment income” means payments which are retrospectively treated as payments of employment income by virtue of a retrospective tax provision;”;
““retrospective tax provision” means a provision of the Income Tax Acts charging to income tax amounts of employment income paid before the enactment containing the provision was passed;”;
““SSC Regulations” means the Social Security (Contributions) Regulations 2001(1);”.
S.I. 2001/1004: the relevant amending instruments are/ S.I. 2007/ 1056 and 1057.