CA34500 | Industrial Buildings Allowance (IBA): writing down allowance: contentsFrom HM Revenue & Customs · Capital Allowances ManualDetailsContents5 entriesCA34510IBA: writing down allowances: conditionsCA34600IBA: writing down allowances: amountCA34650IBA: writing down allowances: limitCA34700IBA: writing down allowances: writing off of qualifying expenditureCA34800IBA: writing down allowances: residue of qualifying expenditurePreviousNext