SolvedTTM11330 | Offshore Activities: Capital allowances
From HM Revenue & Customs · Tonnage Tax Manual
Restriction where asset used for ‘offshore activities’ for part of accounting period
Where during an accounting period an asset used for ‘offshore activities’ is used for those activities on only some days, any writing down allowance for that period is restricted to the ‘relevant proportion’ of the full allowance. See FA00/SCH22/PARA111 (1) and (2).
Qualifying expenditure for subsequent accounting periods
Any writing down allowance for a subsequent period is calculated as if the full allowance had been given in the earlier period. See FA00/SCH22/PARA111 (3) and (4).
Calculation of ‘relevant proportion’
The relevant proportion of the full allowance to be given is calculated by:
OSD/APD
where:
OSD is the number of days on which the asset was used for ‘offshore activities’, and
APD is the total number of days in the accounting period. See FA00/SCH22/PARA111 (5).
Where an asset is acquired part way through an accounting period HMRC interprets this by reference to the total number of days from the date of acquisition to the end of the accounting period.