“One must ask oneself: was what the taxpayer did a reasonable thing for a responsible trader conscious of and intending to comply with his obligations regarding tax, but having the experience and other relevant attributes of the taxpayer and placed in the situation that the taxpayer found himself at the relevant time, a reasonable thing to do?... It seems to me that Parliament in passing this legislation must have intended that the question of whether a particular trader had a reasonable excuse should be judged by the standards of reasonableness which one would expect to be exhibited by a taxpayer who had a responsible attitude to his duties as a taxpayer, but who in other respects shared such attributes of the particular appellant as the tribunal considered relevant to the situation being considered.” 42. Agreeing with that guidance, Judge Brannan says at [32]: “The test contained in the statute is not whether the taxpayer has an honest and genuine belief but whether there is a reasonable excuse. It is true that the absence of a genuine and honest belief would usually indicate that the excuse could not reasonable, but its presence does not mean that the excuse is necessarily reasonable.”
“The Appellant was very well aware of its obligations and of the fact that it was defaulting. What it really complains of is that it did not realise the full implications of its actions, in terms of the new penalties they would attract. Effectively [the Appellant’s representative] was arguing that the Appellant should be excused from the penalty by reason of its ignorance of the law. It is a long established principle of English law that this argument i s d oo med t o fail .”