CA50480 - MEA: Allowances and charges: Balancing allowances: pre-trading expenditure
Pre-trading expenditure on machinery or plant within CAA01/S402 and exploration and access within CAA01/S401 is relieved by way of a balancing allowance on trade commencement (CAA01/S426).
Where, however, exploration and access continues after the commencement of trading then qualifying expenditure is initially relieved by way of writing down allowances.