Commissioner of Taxation v Rio Tinto Ltd

The Commissioner of Taxation (the Commissioner) appealed to the High Court of Australia against a decision of the Full Federal Court concerning the deductibility of interest expenses incurred by Rio Tinto Ltd (Rio Tinto) on loans used to acquire shares in a subsidiary. The dispute centred on whether these interest expenses were incurred in gaining or producing assessable income, or alternatively, were outgoings of a capital, or of a capital, private or domestic nature.

The High Court was required to determine whether the Full Federal Court had erred in finding that the interest expenses were deductible under section 8-1 of the *Income Tax Assessment Act 1997* (Cth). Specifically, the court had to consider whether the dominant purpose for which the loans were taken out was to acquire shares that would produce assessable income, or whether the purpose was of a capital nature.

Kirby and Callinan JJ, in their joint judgment, affirmed the Full Federal Court's decision. They reasoned that the loans were taken out for the purpose of acquiring shares in a subsidiary which was intended to generate assessable income through its operations. The interest expenses were therefore incurred in the course of gaining or producing assessable income, and were not of a capital nature. Their Honours emphasised that the character of the outgoing is determined by the purpose for which it is incurred, and in this instance, the purpose was clearly linked to the generation of assessable income.

The appeal was dismissed.