646Meaning of “net relevant earnings”
(1)Subject to subsections (3) to (7) below, in this Chapter “net relevant earnings”, in relation to an individual, means the amount of his relevant earnings for the year of assessment in question, less the amount of any deductions within subsection (2) below which fall to be made from the relevant earnings in computing for the purposes of income tax his total income for that year.
(2)Deductions are within this subsection if they are—
(a)deductions which but for section 74(m), (p) or (q) could be made in computing the profits or gains of the individual;
(b)deductions made by virtue of section 198, 201 or 332(3);
(c)deductions in respect of relief under Schedule 9 to the [1981 c. 35.] Finance Act 1981 (stock relief);
(d)deductions in respect of losses or capital allowances, being losses or capital allowances arising from activities profits or gains of which would be included in computing relevant earnings of the individual or the individual’s wife or husband.
(3)For the purposes of this section, an individual’s relevant earnings shall be taken to be those earnings before giving effect to any capital allowances, other than deductions allowable in computing profits or gains, but after taking into account the amounts on which charges fall to be made under the 1968 Act (including the enactments which under this Act or the 1970 Act are to be treated as contained in Part I of the 1968 Act); and in subsections (4) and (5) below, references to income (other than references to total income) shall be construed similarly.
(4)In the case of an individual’s partnership profits, the amount to be included in arriving at his net relevant earnings shall be his share of the partnership income (estimated in accordance with the Income Tax Acts) after making from it any such deductions in respect of—
(a)payments made by the partnership;
(b)relief given to the partnership under Schedule 9 to the [1981 c. 35.] Finance Act 1981; or
(c)capital allowances falling to be made to the partnership,
as would be made in computing the tax payable in respect of that income.
(5)Where, in a year of assessment for which an amount is deducted or set off under section 639(1) against the net relevant earnings of an individual—
(a)a deduction in respect of such a loss or allowance of the individual as is mentioned in subsection (2)(d) above falls to be made in computing the total income of the individual or the individual’s wife or husband; and
(b)the deduction or part of it falls to be so made from income other than relevant earnings;
the amount of the deduction made from that other income shall be treated as reducing the individual’s net relevant earnings for subsequent years of assessment in accordance with subsection (6) below.
(6)The deduction shall be made so far as possible from the individual’s net relevant earnings for the first of the subsequent years of assessment (whether or not he is entitled to relief under section 639(1) for that year), and then, so far as it cannot be so made, from those of the next year, and so on.
(7)An individual’s net relevant earnings for any year of assessment shall be computed without regard to any deduction or set off under section 639(1) which falls to be made for that year in respect of the individual or the individual’s wife of husband.