Luton v Lessels

The High Court of Australia considered the validity of the Child Support (Registration and Collection) Act 1988 (Cth) and the Child Support (Assessment) Act 1989 (Cth) in a case stated by the parties, Mr Anthony Luton (the plaintiff) and Ms Gillian Lessels (the first defendant), with the Child Support Registrar as the second defendant. The dispute arose from the assessment and collection of child support payments for a child born from the plaintiff and first defendant's relationship. The plaintiff challenged the legislation on two grounds: first, that it constituted a law imposing taxation that did not comply with section 55 of the Constitution, and second, that it impermissibly conferred the judicial power of the Commonwealth on the Child Support Registrar.

The court was required to determine whether the scheme established by the Acts for the collection and payment of child support constituted a tax, and if so, whether it contravened section 55 of the Constitution. Additionally, the court had to consider whether the powers conferred upon the Child Support Registrar to make assessments, enter particulars, issue notices, and collect and apply payments amounted to an invalid exercise of judicial power contrary to Chapter III of the Constitution.

The High Court rejected both of the plaintiff's contentions. The court held that the scheme established by the Acts was not a tax, and therefore, the question of its validity under section 55 of the Constitution was unnecessary to answer. Furthermore, the court found that the powers exercised by the Child Support Registrar did not constitute an impermissible conferral of judicial power, concluding that the Acts were valid. Consequently, the court ordered that the action be dismissed with costs.