Thiel v. Federal Commissioner of Taxation, 90 A.TC 4717 (HC of A.) -- summary under Article 3

In January and May 1984 the taxpayer, who was a resident of Switzerland, paid $150,000 to acquire six units in the Energy Research Group Unit Trust, in November 1984 he sold his six units to Energy Research Group Australia Ltd. for $300,000 to be satisfied by the issuance to him of 600,000 ordinary shares of that company, and in 1985, following a listing of the shares on the Australian Stock Exchange, he sold 252,000 of his shares for $566,307. The majority found that the taxpayer's activities constituted an "enterprise" for purposes of Article 7 of the Australia-Switzerland Convention regardless whether they constitued an isolated adventure or the recurring conduct of a business. Accordingly, the profits of this enterprise were exempt from taxation under the Income Tax Assessment Act 1936 (Australia).