It is now established, as the Court said in Bolton v. Madsen [1] , that for constitutional purposes duties of excise are taxes directly related to goods (i.e. goods originating in Australia), imposed at some step in their production or distribution before they reach the hands of consumers. This does not exclude a tax imposed, as is the duty now in question, upon the final step in distribution, by which goods reach the hands of consumers. The crucial question in the case of such a tax is whether it is "directly related to goods", in the sense in which that and similar expressions, such as "upon" goods, are used in the lengthening line of judgments which have been delivered in this Court upon the subject. What is referred to may, I think, be described as a relation consisting in this, that some conduct is selected by the relevant legislation as being a step in the production, manufacture or distribution of goods and in that character is made of the essence of the tax. A tax must necessarily be made payable by a person; but it is not a duty of excise unless the criterion of the person's liability is the fact that some act of his possesses the quality of a contribution either to the physical character of goods as subjects of commerce or to the sequence of events which results in their being available, as in the hands of a consumer, to be put to their ultimate purpose. The reason is that a duty of excise is, at bottom, a burden upon home production or manufacture. Obviously it is such a burden if it is payable upon a step in production or manufacture in its character of such a step. Not so obviously but just as certainly, it is such a burden if it is payable upon a step in distribution in its character of such a step; for in that case from the time the goods come into existence the law makes it inherent in their nature, as goods requiring distribution in order to become available to fulfil their purpose, that the tax shall be paid. This is the point that Rich and Williams JJ. made by saying in Parton v. Milk Board (Vict.) [1] , that to be an excise duty a tax must be imposed "so as to be a method of taxing the production or manufacture of goods". At whatever point before consumption a duty of excise becomes payable it must burden production or manufacture. Their Honours went on immediately to say that the production or manufacture of an article will be taxed whenever a tax is imposed in respect of some dealing with the article by way of sale or distribution at any stage of its existence, provided that it is expected or intended that the taxpayer will not bear the ultimate incidence of the tax himself but will indemnify himself by passing it on to the purchaser or consumer. This statement may need modification or explanation in the light of subsequent judgments, but it directs attention to the point that must be kept in mind in the present case, namely that a tax cannot be an excise unless its fundamental concern is with goods rather than persons. Its probable ultimate incidence is relevant for consideration simply because if the consumer is likely to bear the tax in the end that fact tends to show that the tax is in its nature a tax upon the goods and not upon the particular person who is made liable for payment of it to the Crown. In other words the tax reflects back upon the production or manufacture of the goods, since its effect is that from the beginning the goods are subjected to an inherent inability to reach the point of consumption without the duty becoming payable and so entering into their total cost. As Dixon J. said in Parton v. Milk Board (Vict.) [1] , "A tax upon a commodity at any point in the course of distribution before it reaches the consumer produces the same effect as a tax upon its manufacture or production" [2] .