Commentary on Sections Glossary Structure of Part 2 Section 53: Pooling of qualifying expenditure
270.This section makes explicit that qualifying expenditure must be pooled to arrive at writing-down allowances and balancing allowances or balancing charges.
271.As noted in paragraph 98 above, Part II of CAA 1990 does not refer to pools as such. Expenditure is pooled by requiring it to be aggregated for the purposes of working out writing-down allowances, balancing allowances and charges for each trade, deemed trade or notional trade. In this Act these requirements are expressed in terms of pools for qualifying activities.
272.Subsection (2) requires that expenditure for separate qualifying activities must be allocated to separate pools. So a person carrying on several qualifying activities may have several main pools and class pools plus separate sets of single asset pools.