Fletcher & Ors v The Commissioner of Taxation of The Commonwealth of Australia

This matter came before the High Court of Australia concerning an application for special leave to appeal by Reginald Sidney Fletcher and others against the Commissioner of Taxation of the Commonwealth of Australia. The core of the dispute revolved around the Commissioner's attempt to invoke Part IVA of the *Income Tax Assessment Act*, the general anti-avoidance provisions, in relation to the taxpayers' tax affairs.

The legal issues before the court included whether the Administrative Appeals Tribunal (AAT) had the power to apply Part IVA of the *Income Tax Assessment Act* of its own motion, despite the Commissioner not having initially assessed the taxpayers under those provisions. Further, the court was required to consider the scope of the AAT's powers under section 43 of the *Administrative Appeals Tribunal Act*, specifically whether those powers extended to exercising discretions vested in the Commissioner for purposes other than the decision under review.

The applicants argued that Part IVA and the general provisions of the Act were mutually exclusive, meaning the Commissioner could not invoke Part IVA if a tax benefit was disallowed or not allowed under the general provisions. They contended that the AAT's power under section 43(1) was limited to exercising the powers and discretions of the original decision-maker for the purpose of making the decision under review, and did not extend to powers vested in the Commissioner for other purposes. This interpretation was supported by established principles derived from High Court and Full Federal Court decisions.