“… the cases in which a trader with insufficient funds to pay the tax can successfully invoke the defence of “reasonable excuse” must be rare. That is because the scheme of collection which I have outlined involves at the outset the trader receiving (or at least being entitled to receive) from his customers the amount of tax which he must subsequently pay over to the commissioners. There is nothing in law to prevent him from mixing this money with the rest of the funds of his business and using it for normal business expenses (including the payment of input tax), and no doubt he has every commercial incentive to do so. The tax which he has collected represents, in substance, an interest-free loan from the commissioners. But by using it in his business he puts it at risk. If by doing so he loses it, and so cannot hand it over to the commissioners when the date of payment arrives, he will normally be hard put to it … to persuade the commissioners or the tribunal that he had a reasonable excuse for venturing and thus losing money destined for the Exchequer of which he was the temporary custodian.”
“ The reason for the insufficiency of funds is, in such a case, itself an insufficiency of funds. ”
“The difficulty which then arises is that Parliament has not specified what underlying causes of an insufficiency of funds which lead to a default are to be regarded as reasonable or as not being reasonable. … Nolan LJ, as I read his judgment explaining and expanding on his judgment in Customs and Excise Comrs v Salevon Ltd[1989] STC 907 , is saying that if the exercise of reasonable foresight and due diligence and a proper regard for the fact that the tax would become due on a particular date would not have avoided the insufficiency of funds which led to the default, then the taxpayer may well have a reasonable excuse for non-payment, but that excuse will be exhausted by the date on which such foresight, diligence and regard would have overcome the insufficiency of funds. Scott LJ on the other hand is of the opinion that the underlying cause of the insufficiency of funds must be an ‘unforeseeable or inescapable event’. I have come to the conclusion that this is too narrow in that (a) it gives insufficient weight to the concept of reasonableness and (b) it treats foreseeability as relevant in its own right, whereas I think that ‘foreseeability’ or as I would say ‘reasonable foreseeability’ is only relevant in the context of whether the cash flow problem was ‘inescapable’ or, as I would say, ‘reasonably avoidable’. It is more difficult to escape from the unforeseeable than from the foreseeable.”
“To decide whether a reasonable excuse exists where insufficiency of funds causes the failure, the Tribunal must take for comparison a person in a similar situation to that of the actual taxpayer who is relying on the reasonable excuse defence. The Tribunal should then ask itself, with that comparable person in kind, whether notwithstanding that person’s exercise of reasonable foresight, due diligence and a proper regard for the fact that the tax would become payable on the particular dates, those factors would not have avoided the insufficiency of funds which led to the failures.”