8 Payment of contributions and amount of regular contributions
1 Regular contributions shall be paid to the Secretary of State at intervals of one month.
2 Payment of regular contributions under paragraph (1) shall be effected by deduction by the contributor’s employer of the appropriate amounts from the contributor’s salary and such deductions shall commence to be made from the salary in respect of the first whole pay period falling after the date on which the employer receives authorisation to make these deductions and be remitted to the Secretary of State within 7 days after their deduction.
3 The total of contributions paid in any tax year must not exceed the lesser of (A-B-C) and D, where—
A is 15 per cent of the person’s salary for that year,
B is the total of any contributions paid by him in the year to another approved scheme,
C is the total of the contributions paid by him in the year under the 1988 Regulations, except contributions paid pursuant to a demand under regulation C16(2) of the 1988 Regulations, and
D is the amount which would be likely to provide benefits of the largest amounts allowed by regulation 14 and the Schedule.