s 45S Expenditure on plant or machinery in other cases
Expenditure is first-year qualifying expenditure if— (a) it is incurred on or after 1 April 2023, (b) it is incurred by a company within the charge to corporation tax, (c) it is expenditure on plant or machinery which is unused and not second-hand, and (d) it is not excluded by section 45T (exclusion of expenditure under disqualifying arrangements) or 46 (general exclusions).