The Income Support (General) Regulations 1987

Deduction of tax and contributions for self-employed earners

39.—(1) The amount to be deducted in respect of income tax under regulation 38 (1) (b) (i), (3) (b) (i) or (9) (a) (i) (calculation of net profit of self-employed earners) shall be calculated on the basis of the amount of chargeable income and as if that income were assessable to income tax at the basic rate of tax less only the personal relief to which the claimant is entitled under sections 8 (1) and (2) and 14 (1) (a) and (2) of the Income and Corporation Taxes Act 1970 (personal relief)(1) as is appropriate to his circumstances; but, if the period determined under regulation 30 (calculation of earnings of self-employed earners) is less than a year, the amount of the personal relief deductible under this paragraph shall be calculated on a pro rata basis.

(2) The amount to be deducted in respect of social security contributions under regulation 38(1)(b)(i), (3)(b)(ii) or (9)(a)(ii) shall be the total of—

(a)the amount of Class 2 contributions payable under section 7 (1) or, as the case may be, (4) of the Social Security Act(2) except where the claimant’s chargeable income is less than the amount for the time being specified in section 7 (5) of that Act(3) (small earnings exception); and

(b)the amount of Class 4 contributions (if any) which would be payable under section 9 of that Act(4) (contributions recoverable under Taxes Acts) in respect of profits or gains equal to the amount of that income.

(3) In this regulation “chargeable income” means—

(a)except where sub-paragraph (b) applies, the earnings derived from the employment less any expenses deducted under paragraph (3) (a) or, as the case may be, (4) of regulation 38;

(b)in the case of employment as a child minder, one-third of the earnings of that employment.