OT21440 | Field allowance: transfer of field allowance where the equity share changes
From HM Revenue & Customs · Oil Taxation Manual
[Field Allowance was superseded by Investment Allowance which was introduced by Fiance Act 2015 and applies to expenditure incurred on or after 1 April 2015. See OT21550 for guidance on Investment Allowance.]
Where a company disposes of all or part of its share in the equity in a field, all or part of the unactivated amount of the field allowance for the field transfers to the transferee.
For the transferor, the unactivated amount is reduced by the fraction:
(E1 - E2)/E1
where
E1 is the transferor’s share of the equity in the field immediately before the disposal, and
E2 is the transferor’s share of the equity in the field immediately after the disposal.
The unactivated amount available for a transferee depends on whether the transferee has acquired all or part of the transferred interest.
The unactivated amount which passes to the transferee is given by the formula:
R x E3/(E1 - E2)
where
R is the amount of the reduction determined for the transferor,
E3 is the share of the equity in the field that the transferee has acquired from the transferor, and
E1 - E2 is (following the meaning above) the share disposed of by the transferor.