R v Petroulias

In this case, the Director of Public Prosecutions for the Commonwealth appeals against the decision of Sully J, who permanently stayed proceedings on a particular count in a proposed indictment against Petroulias. The charge against Petroulias is for defrauding the Commonwealth under section 29D of the Crimes Act 1914(Cth), which pertains to taxation fraud. The central issue revolves around the interpretation and application of private rulings issued under Part IVAA of the Taxation Administration Act 1953(Cth) and their subsequent reliance in the context of section 170BB of the Income Tax Assessment Act 1936(Cth). The court needed to determine whether the case presented by the Commissioner was sufficiently arguable to warrant a criminal prosecution, considering the arguability in law and the potential impact on Petroulias' right to a fair trial.

The court considered whether the determination of whether the private rulings were arguably wrong was a factual issue to be decided by the jury or a legal issue for the judge. The court held that the question of whether the private rulings were arguably wrong was a mixed question of fact and law, to be determined by the jury. The court also examined the admissibility of evidence concerning the interpretation of statutory provisions, holding that evidence from sources such as courts or experts could be admissible to assist the jury in determining the factual issue, provided that there had been no changes in the relevant statutory provisions since the private rulings were made. The court noted that the ultimate issue rule had been abolished by section 80 of the Evidence Act 1995, allowing the jury to be assisted by such evidence. However, opinion evidence should be expressed in terms of correctness rather than arguability.

The court concluded that the evidence presented by the Crown was sufficient to give rise to a real issue as to whether the risk to the revenue was such that the Commonwealth was deprived of something of value. However, the trial judge was still entitled to form his own judgment on the issue of whether the case put by the Commissioner was sufficiently arguable. The court allowed the appeal and set aside the order permanently staying the proceedings, directing that the matter be returned to the trial judge for further consideration.