Section 688: Income charged
2640.This section is based on sections 65, 68 and 69 of ICTA. The rules in sections 65(1) and 68(1) of ICTA, for income chargeable under Schedule D Cases IV and V, and under section 69 of ICTA, for income chargeable under Schedule D Case VI, are broadly similar. But there is a difference in terms used (income in sections 65 and 68 of ICTA, profits or gains in section 69 of ICTA). For the reasons set out in the commentary on the preceding section, that difference has no significance here.
2641.As regards any income within this charge which is relevant foreign income (defined in section 830 of this Act), Part 8 of this Act applies. That Part rewrites the calculation rules in sections 65 and 68 of ICTA, for income charged under Schedule D Cases IV and V, setting out all the material differences between those rules and those in section 69 of ICTA for income charged under Schedule D Case VI. Chapter 4 of Part 8 of this Act contains rules that apply to income arising outside the United Kingdom, whether or not it is relevant foreign income.
2642.See also paragraph 159 of Schedule 2 to this Act. This paragraph provides that such case law guidance as there is on the calculation of income under this and other charges, as regards deductions allowed and not allowed, continues to apply. In respect of income that was formerly within Schedule D Case VI, this ensures that the guidance in, for example, Curtis Brown Ltd v Jarvis (1929), 14 TC 744 HC remains applicable. (The effect of that guidance is spelt out in the sections mentioned in that paragraph.)
2643.See also Chapter 2 of Part 10 of this Act for further rules that affect the calculation of income under this section.