SolvedBKM406450 | Banking surcharge: targeted anti-avoidance rule: meaning of deductible amount
From HM Revenue & Customs · Banking Manual
A deductible amount is:
an expense of a trade, other than R&D allowances treated as expenses
an expense of UK or overseas property trade
an expense of management
a non-trading debit – loan relationships
a non-trading debit – intangible fixed assets