749.This section sets out the priority rules that apply when a receipt or other credit item might otherwise fall within more than one head of charge. It is based on section 18 of ICTA. The corresponding rules for income tax are in section 4 of ITTOIA.
750.Subsection (2) deals with potential overlap with ITEPA. It is based on section 18 of ICTA. In the source legislation Schedule D is the residual Schedule. So the charge in ITEPA on employment income, and other income formerly within Schedule E, has priority over the charge on profits of a trade (Schedule D in the source legislation).