SCHEDULES
SCHEDULE 2 Schedule 2 to the Social Security Contributions and Benefits Act 1992: Levy of Class 4 Contributions with Income Tax
Method of computing profits or gains
2
Subject to the following paragraphs, Class 4 contributions shall be payable in respect of the full amount of all profits or gains of any relevant trade, profession or vocation chargeable to income tax under Case I or II of Schedule D, F1subject to deduction for any allowance—
(a)
the amount of which falls to be given by way of discharge or repayment of income tax under section 141 of the Act of 1990; and
(b)
which arises from activities of any relevant trade, profession or vocation.