During that year the company paid retiring allowances to three of its directors who had filled that office for an average period of forty-five years and whose average age was nearly eighty years. In its ordinary return the company treated the retiring allowances as deductions from the assessable income. The commissioner, however, purporting to act under s. 109, disallowed the deductions. Since s. 109 says that whatever amount ceases to be an allowable deduction as a result of his invoking that section "shall, for all purposes of this Act, be deemed to be a dividend", this meant that in the personal assessment of each retiring director the amount he received on retirement would be included in his assessable income as income from property and he would not have the benefit which s. 26 (d) would otherwise confer of being taxed only on five per cent of the lump sum. It also meant that in ascertaining the undistributed amount of income within the meaning of s. 103 for the purpose of tax under Div. 7 (s. 104) it was necessary for the commissioner to deduct the amount disallowed in respect of retiring allowances on the footing that dividends aggregating that amount had been distributed. The commissioner made his assessment of tax under Div. 7 on that basis. He took the company's ordinary assessment of taxable income as supplying the point of commencement, namely the taxable income, and deducted the aggregate amount of the three retiring allowances as if they were distributions of dividend. In the company's ordinary assessment, of course, he disallowed the retiring allowances as deductible outgoings. Whether, if the commissioner had not acted under s. 109, a case existed for deducting the retiring allowances under s. 51 is a question on which we can form no opinion. Under that section the inquiry would be whether they constituted outgoings incurred in gaining or producing the assessable income, or necessarily incurred in carrying on a business for the purpose of gaining or producing such income, and perhaps whether they were of a capital nature: cf. Maryborough Newspaper Co. Ltd. v. Federal Commissioner of Taxation [1] ; Mitchell v. B. W. Noble Ltd. [2] . The necessary facts are not before us. But when the company challenged its ordinary assessment before a board of review on the ground that the retiring allowances ought to be deducted in ascertaining its taxable income, the company does not seem to have contended that s. 51 applied. At all events the board of review decided that the retiring allowances were not so deductible. The board in giving its reasons excluded the application of s. 51 because that had been abandoned by the company and excluded the application of s. 78 (1) (c) because on the facts the directors were not employees and s. 78 (1) (c) applied only to the case of employees. The board rightly treated that part of s. 109 which concerns deductibility as possessing only a negative, restrictive or privative effect, but, although they upheld the disallowance of the deduction on grounds which are independent of the operation of that section, they thought it better to add in effect that, had they been called on to say under that section whether the amounts of the allowance were unreasonable they would, differing from the commissioner, have said that they were not unreasonable. Apparently because of this expression of the board's view, the commissioner decided to abandon the application he had given to s. 109. We are told in the reasons of the board given in the present proceedings that the commissioner decided to treat the respective amounts not as dividends but as retiring allowances in the hands of the recipients and that they benefited accordingly. He also made the amendment now under consideration in his assessment of the company to additional tax under Div. 7. The amendment struck out the deduction of the notional dividends into which the commissioner had sought to convert the retiring allowances by using s. 109. The result was, of course, greatly to increase the amount of the company's undistributed profit in respect of the year of income ending on 31st December 1945 and the additional tax thereon for the year of tax 1946-1947.