“Indeed, it is quite impossible to see how the Crown, in cases of this kind, could do anything else but attempt to draw inferences. The true facts are known, presumably, if known at all, to one person only, the taxpayer himself. If once it is clear that he has not put before the tax authorities the full amount of his income, as on the quite clear inferences of fact to be made in the present case he has not, what can then be done? Of course all estimates are unsatisfactory; of course they will always be open to challenge in points of detail; and of course they may well be under-estimates rather than over-estimates as well. But what the Crown has to do in such a situation is, on the known facts, to make reasonable inferences. When, in paragraph 7(b) of the case stated, the commissioners state that (with certain exceptions) the inspector's figures were 'fair' that is, in my judgment, precisely and exactly what they ought to be, fair. The fact that the onus is on the taxpayer to displace the assessment is not intended to give the Crown carte blanche to make wild or extravagant claims. Where an inference of whatever nature falls to be made, one invariably speaks of a 'fair' inference. Where, as is the case in this matter, figures have to be inferred, what has to be made is a 'fair' inference as to what such figures may have been. The figures themselves must be fair.”
“Now it is to be remembered that under the law as it stands the duty of the Commissioners [and since1 April 2009 the Tribunal] who hear the appeal is this: Parties are entitled to produce any lawful evidence, and if on appeal it appears to a majority of the Commissioners by examination of the Appellant on oath or affirmation, or by other lawful evidence, that the Appellant is over-charged by any assessment, the Commissioners shall abate or reduce the assessment accordingly; but otherwise every assessment or surcharge shall stand good. Hence it is quite plain that the Commissioners are to hold the assessment as standing goods unless the subject – the Appellant – establishes before the Commissioners, by evidence satisfactory to them, that the assessment ought to be reduced or set aside.”
“The Appellant has offered me no evidence from which I could conclude that the Appellant was overcharged by the amended self-assessment and accordingly it must stand good.”