Mobil Oil Australia Ltd v Federal Commissioner of Taxation

The case of *Mobil Oil Australia Ltd v Federal Commissioner of Taxation* concerned an appeal by Mobil Oil Australia Ltd to the Privy Council from a decision of the High Court of Australia. The dispute arose from the Commissioner of Taxation's assessment of income tax against Mobil Oil, specifically concerning the deductibility of certain payments made by Mobil Oil to its parent company, Mobil Oil Corporation, in the United States. These payments were described as "overriding royalty payments" and were made in connection with the acquisition of crude oil.

The central legal issue before the Privy Council was whether these overriding royalty payments constituted an allowable deduction for Mobil Oil under the provisions of the *Income Tax and Social Services Contribution Assessment Act 1936* (Cth). Specifically, the court had to determine if the payments were incurred in gaining or producing assessable income, or if they were outgoings of capital, or of a capital, private or domestic nature, and therefore not deductible.

The Privy Council, in its reasoning, focused on the nature of the payments and their relationship to Mobil Oil's business operations. It was held that the payments were not a capital outgoing, but rather a cost incurred in the acquisition of trading stock, which was essential for Mobil Oil to carry on its business of refining and selling petroleum products. The court applied the principle that expenses incurred in the process of acquiring goods for resale are generally revenue in nature and deductible, provided they are not of a capital nature. The overriding royalty was seen as a component of the purchase price of the crude oil, and therefore a revenue expense.

The appeal was allowed, and the assessment made by the Commissioner of Taxation was set aside.