Deputy Commissioner of Taxation v Woods

The case of Deputy Commissioner of Taxation v Woods was heard in the High Court of Australia. The central issue in this case was whether the respondent, Woods, could challenge the validity of an assessment issued by the Deputy Commissioner of Taxation under section 160AB of the Income Tax Assessment Act 1936. The assessment was made on the basis of an amended return lodged by Woods, which resulted in a tax liability significantly different from the original assessment. Woods contended that the assessment was not 'duely made' and thus not conclusive.

The legal issues that the court needed to address were whether the assessment could be questioned outside the procedures provided by the Act and whether the court had the jurisdiction to review the validity of the assessment. The court had to interpret the statutory provisions, particularly section 160AB, to determine the extent of the restrictions on questioning an assessment and the meaning of 'due making' in the context of the Act.

In its decision, the High Court held that the statutory framework governing tax assessments provided a comprehensive procedure for challenging the validity of an assessment, and the court's jurisdiction to review the assessment was limited to the procedures outlined in the Act. The court emphasised that section 160AB of the Act established a conclusive presumption that an assessment was validly made, unless it was shown to be invalid under the specific provisions of the Act. The court further clarified that the term 'duely made' in section 160AB meant that the assessment was made in accordance with the prescribed process, and not whether the assessment was substantively correct. Consequently, the court determined that Woods' challenge to the validity of the assessment was outside the scope of the court's jurisdiction under the Act.

The final orders of the court affirmed that the assessment was conclusive and could not be questioned on the basis that it was not 'duely made', as per the provisions of section 160AB of the Income Tax Assessment Act 1936.