Port Augusta Medical Centre Pty Ltd v Commissioner of State Taxation

Port Augusta Medical Centre Pty Ltd (the appellant) appealed to the Supreme Court of South Australia against the Commissioner of State Taxation's refusal to exclude the appellant from a "group" for the purposes of the *Pay-Roll Tax Act 1971* (SA). The appellant provided medical services through a group of medical practitioners, two of whom, Dr V.K.P. Yeung and Dr R. Bhola, operated through their respective incorporated bodies, Vay Nominees Pty Ltd and Guyram Pty Ltd, which were trustees of their family trusts.

The central legal issues before the court were whether the business conducted by the appellant was carried on substantially independently of, and was not substantially connected with, the businesses conducted by the two medical practitioners, pursuant to section 18I of the *Pay-Roll Tax Act 1971* (SA). The court also considered whether the correct test under section 18I had been adequately applied, and whether the appellant's business structure, including its profit-maximisation objective and profit distribution, prevented it from satisfying the requirements of section 18I.

The Full Court of the Supreme Court dismissed the appeal, finding that the appellant's business was substantially connected with the businesses of Dr Yeung and Dr Bhola, and was not carried on substantially independently. The court held that the judge had correctly considered the test under section 18I(1) of the Act, including the business structure, management, and daily activities of the appellant. The court noted that the doctors exercised significant control over the appellant, including hiring practice managers, selecting sites, designing centres, and determining fee arrangements. The financial links, where profits were distributed to the doctors' family trusts, further indicated a substantial connection.