"…………… What the words 'best of their judgment' envisage, in my view, is that the Commissioners will fairly consider all material placed before them and, on that material, come to a decision which is one which is reasonable and not arbitrary as to the amount of tax which is due. As long as there is some material on which the Commissioners can reasonably act then they are not required to carry out investigations which may or may not result in further material being placed before them."
“……the tribunal should not treat an assessment as invalid merely because it disagrees as to how the judgment should have been exercised. A much stronger finding is required; for example, that the assessment has been reached ‘dishonestly or vindictively or capriciously’; or is a ‘spurious estimate or guess in which all elements of judgment is missing; or is ‘wholly unreasonable’. In substance those tests are indistinguishable from the familiar Wednesbury principles (see Associated Provincial Picture Houses ltd v Wednesbury Corp[1948] 1 KB 223 ). Short of such a finding, there is no justification for setting aside the assessment.”
“38. In the light of the above discussion, I would make four points by way of guidance to the tribunal when faced with ‘best of their judgment’ arguments in future cases: (i) The tribunal should remember that its primary task is to find the correct amount of tax, so far as possible on the material properly available to it, the burden resting on the taxpayer. In all but very exceptional cases, that should be the focus of the hearing, and the tribunal should not allow it to be diverted into an attack on the commissionersʼ exercise of judgment at the time of the assessment. (ii) Where the taxpayer seeks to challenge the assessment as a whole on ‘best of their judgment’ grounds, it is essential that the grounds are clearly and fully stated before the hearing begins. (iii) In particular the tribunal should insist at the outset that any allegation of dishonesty or other wrongdoing against those acting for the commissioners should be stated unequivocally; that the allegation and the basis for it should be fully particularised; and that it is responded to in writing by the commissioners. The tribunal should not in any circumstances allow cross-examination of the Customs officers concerned, until that is done. (iv) There may be a few cases where a ‘best of their judgment’ challenge can be dealt with shortly as a preliminary issue. However, unless it is clear that time will be saved thereby, the better course is likely to be to allow the hearing to proceed on the issue of amount, and leave any submissions on failure of best of their judgment, and its consequences, to be dealt with at the end of the hearing.”
“The starting point is an ordinary appeal before the [Tribunal]. Here, however unacceptable the idea may be to the ordinary member of the public, it has been clear law binding on this court for sixty years that an inspector of taxes has only to raise an assessment to impose on the taxpayer the burden of proving that it is wrong: Haythornwaite & Sons Ltd v Kelly (Inspector of Taxes) (1927) 11 TC 657”
“I did not know anything about the food business and asked the existing staff members to take control over the store as I could not manage it and my intention was to put it up for sale.”