CA27300 | PMA: Assets used partly for qualifying activity: Significant reduction in use
From HM Revenue & Customs · Capital Allowances Manual
Expenditure on an asset that is used partly for a qualifying activity and partly for other purposes is put into a single asset pool.CA27005. The allowances are reduced on a just and reasonable basis. There may be a change of circumstances, which means that the allowances given exceed the depreciation charge. If:
the extent of the use of an asset for activities that are qualifying activities falls, and
the market value of the asset exceeds the balance in the single asset pool for the chargeable period in which the change of circumstances happens by more than £1 million,
a disposal value is brought to account.
The disposal value is market value. It is put into another single asset pool and the WDAs in that pool are reduced on a just and reasonable basis taking account of the changed circumstances.
Example
Icarus Airways buys a plane for £40 million in its accounts year ended 31 December 2018. It uses the plane 90% for a qualifying activity and 10% for an activity not within the charge to tax in the UK. It claims WDA. The WDA of £7.2 million (18% of £40 million) is reduced to £6.48 million (90% of £7.2 million). The pool carried forward at 31 December 2018 is £32.8 million. In the year ended 31 December 2019 things change. The plane starts to be used 90% for activities outside the UK tax net. The market value of the plane at the end of this year is £36 million, which is more than £1 million more than the pool value of £32.8 million. A disposal value of £36 million is brought to account. There is a balancing charge of £2.88 million (= 90% of £36 million - £32.8 million) for the year ended 31 December 2019. There is a pool of £36 million on 1 January 2020.