(1)Where an asset representing scientific research expenditure of a capital nature incurred by the person carrying on a trade ceases to be used by that person for scientific research related to that trade—
(a)no allowance shall be made under the last preceding section for any year of assessment after that in which the cessation takes place ; and
(b)if the amounts, if any, allowed under the last preceding section in respect of the expenditure, added to the value of the asset immediately before the cessation, are less than the said expenditure, there shall be allowed in charging the profits and gains of the trade for the year of assessment in which the cessation takes place an additional deduction equal to the difference ; and
(c)if in any subsequent year of assessment a claim is, or would but for this subsection be, admissible by the person carrying on the trade to a deduction in respect of the asset for wear and tear, obsolescence, depreciation or exceptional depreciation and the amount of that deduction is dependent upon the actual cost to that person of the asset, the cost of the asset, or the net cost of the asset, then the actual cost, cost or net cost, as the case may be, shall, for the purpose of ascertaining whether any and if so what deduction is admissible, be treated as reduced by the amount of any deductions allowed in respect of the asset under this or the last preceding section.
(2)Where an asset representing scientific research expenditure of a capital nature in respect of which an allowance or allowances has or have been made under this or the last preceding section in charging the profits or gains of a trade ceases to be used by the person carrying on the trade for scientific research related to that trade and is then or thereafter sold by him without having been used in the meantime for other purposes, then—
(a)if an additional allowance, or a greater additional allowance, would have been made under the last preceding subsection for the year of assessment in which the cessation occurred if the proceeds of sale of the asset had been taken to be the value of the asset, an amount equal to the additional allowance which would have been made or, as the case may be, to the difference between the additional allowance which would have been made and the additional allowance which was made for that year shall be allowed in charging the profits or gains of the trade for the year of assessment in which the sale occurs or, if the sale occurs on or after the date on which the trade is permanently discontinued, for the last year of assessment in which the trade is carried on before the discontinuance ;
(b)in any other case, if the proceeds of sale plus the total amount of the allowances made under this and the last preceding section in respect of the expenditure exceed the amount of the expenditure, the excess or the amount of the allowances so made, whichever is the less, shall be treated as a trading receipt of the trade accruing at the time of the sale, or, if the sale occurs on or after the date on which the trade is permanently discontinued, accruing immediately before the discontinuance.
(3)Where an asset is destroyed by fire or any similar cause, it shall for the purposes of the last preceding subsection be treated as if it had been sold immediately before the destruction thereof and any insurance moneys or other compensation of any description received by the person carrying on the trade in respect of the destruction and any moneys received by him for the remains of the asset shall be treated as if they were proceeds of that sale.
(4)Where a deduction is allowed for any year under this or the last preceding section in respect of expenditure represented wholly or partly by any assets, no deduction shall be allowed under any provision of the Income Tax Acts other than this Part of this Act in respect of wear and tear, obsolescence, depreciation or exceptional depreciation of those assets for any year of assessment during any part of which they are used by the person carrying on the trade for scientific research related to the trade.