Federal Commissioner of Taxation v Westraders Pty Ltd

The Federal Commissioner of Taxation (the Commissioner) appealed to the High Court of Australia against a decision of the Full Federal Court concerning the deductibility of certain expenses incurred by Westraders Pty Ltd (Westraders). The dispute centred on whether these expenses, incurred in the context of a takeover bid for Westraders, were of a capital nature and therefore not deductible under section 51(1) of the *Income Tax Assessment Act 1936* (Cth).

The High Court was required to determine whether the expenses incurred by Westraders in resisting a takeover bid were deductible as outgoings incurred in gaining or producing assessable income, or whether they were of a capital nature and thus non-deductible. Specifically, the court had to consider the application of the "once and for all" test and the distinction between outgoings on revenue account and those on capital account in the context of corporate restructuring and defence against hostile takeovers.

The majority of the High Court, comprising Mason, Murphy, Aickin and Wilson JJ, held that the expenses were of a capital nature. Their Honours reasoned that the expenses were incurred to preserve the existing structure of the company and its capital, rather than to generate income in the ordinary course of business. The defence against the takeover bid was seen as an operation to protect the company's fixed capital, which is inherently a capital purpose. Barwick C.J. dissented, finding that the expenses were incurred in the course of the company's business operations and were therefore deductible.

The appeal was allowed, and the Full Federal Court's decision was overturned.