Attorney-General for Queensland v Attorney-General for the Commonwealth

The High Court of Australia considered a demurrer to a statement of claim brought by the Attorney-General for Queensland, at the relation of Goldsbrough, Mort & Co. Ltd., and the company itself, against the Attorney-General for the Commonwealth and the Commissioner of Land Tax. The plaintiffs sought to challenge the validity of the Commonwealth's Land Tax Assessment Act 1910-1914, particularly its application to leasehold estates in Crown lands. The core of the dispute was whether the Commonwealth Parliament had the constitutional power to impose land tax on such leasehold interests, which were granted and managed by the respective States.

The legal issues before the Court included whether the Commonwealth's imposition of land tax on leasehold estates in Crown lands was invalid due to repugnancy with Imperial statutes that granted colonial legislatures control over Crown lands, as per the Colonial Laws Validity Act 1865. Further questions arose concerning whether such taxation constituted a tax on State property or instrumentalities, contrary to section 114 of the Constitution, and whether the Act dealt with more than one subject of taxation, contravening section 55 of the Constitution. The Court was also asked to consider the basis for assessing the unimproved value of these leasehold interests.

The Court, in dismissing the demurrer, held that the Land Tax Assessment Act 1910-1914, in so far as it imposed land tax upon leasehold estates in Crown lands, was not invalid. This decision followed the precedent set in *Morgan v. Deputy Federal Commissioner of Land Tax (N.S.W.)*. The Court reasoned that the powers of the States regarding Crown lands, originally granted by Imperial legislation, continued under section 107 of the Constitution, and that the Commonwealth's taxing power under section 51(ii) was not inherently restricted by these State powers in a way that would render the tax on leaseholds invalid. The Court also refused to make a declaratory order regarding the validity of specific provisions (sections 48 and 56) or the basis of assessment for unimproved value in the absence of a concrete case or dispute, indicating that such matters could be raised on appeal from an assessment.