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HMRC internal manual

Oil Taxation Manual

HM Revenue & Customs
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Field allowance: the unactivated amount of a field allowance

The unactivated amount of a field allowance is one of the limits in determining the field allowance activated for an accounting period. The unactivated amount takes account of amounts already activated and changes in equity interest in the field.

The unactivated amount at a particular time is the total of the field allowance which the company held before that time, plus any field allowance received because of the acquisition of a further equity share, less the field allowance already activated for earlier accounting periods or reference periods less any reductions in field allowance because of equity share disposals.