The Commissioner of Taxation of the Commonwealth of Australia v BHP Billiton Limited

The Commissioner of Taxation of the Commonwealth of Australia (the Commissioner) appealed to the High Court of Australia against a decision of the Full Federal Court concerning the deductibility of certain interest expenses incurred by BHP Billiton Limited (BHP). The dispute centred on whether interest paid by BHP on loans, which were used to fund the acquisition of shares in a subsidiary, was an allowable deduction under section 8-1 of the *Income Tax Assessment Act 1997* (Cth).

The High Court was required to determine whether the interest expenses were incurred in gaining or producing assessable income, or were necessarily incurred in carrying on a business for the purpose of gaining or producing assessable income. Specifically, the court had to consider the application of the "profit-making purpose" test and the "business purpose" test in the context of interest expenses incurred on intra-group financing arrangements for the acquisition of shares.

The High Court, by majority, allowed the Commissioner's appeal. The majority held that the interest expenses were not deductible. Their reasoning focused on the fact that the loans were incurred for the purpose of acquiring shares in a subsidiary, which was an investment rather than a business operation. The court distinguished between the business of earning dividends from shares and the business of holding shares as an investment. The majority found that the dominant purpose for which the loans were raised was to acquire an asset (the shares), and the subsequent earning of dividends was a consequence of that investment, not the direct purpose of the borrowing. The legal principle applied was that interest expenses incurred to acquire an income-producing asset are generally not deductible if the acquisition itself is not part of a business operation.

The High Court ordered that the appeal be allowed, setting aside the decision of the Full Federal Court and remitting the matter to the Federal Court for redetermination of the quantum of tax payable.