Section RD 21(1)(a): replaced, on 1 April 2019, by section 207(1) of the Taxation (Annual Rates for 2017–18, Employment and Investment Income, and Remedial Matters) Act 2018 (2018 No 5).
Section RD 21(3): amended, on 1 April 2019, by section 207(2) of the Taxation (Annual Rates for 2017–18, Employment and Investment Income, and Remedial Matters) Act 2018 (2018 No 5).
Section RD 21(3): amended (with effect on 1 April 2008 and applying for the 2008–09 and later income years), on 30 March 2017, by section 263(1) of the Taxation (Annual Rates for 2016–17, Closely Held Companies, and Remedial Matters) Act 2017 (2017 No 14).
Section RD 21 list of defined terms employer monthly schedule: repealed, on 1 April 2019, by section 207(3)(b) of the Taxation (Annual Rates for 2017–18, Employment and Investment Income, and Remedial Matters) Act 2018 (2018 No 5).
Section RD 21 list of defined terms employment income information: inserted, on 1 April 2019, by section 207(3)(a) of the Taxation (Annual Rates for 2017–18, Employment and Investment Income, and Remedial Matters) Act 2018 (2018 No 5).