The High Court, by a 3:2 majority, has dismissed the Commissioner’s appeals from the Full Court of the Federal Court of Australia, in Commissioner of Taxation v Australian Building Systems PL (in liq) [2015] HCA 48. You can read the summary of the judgment published by the High Court on its website here, and the judgment in full here. Four separate judgments were written: by French CJ and Kiefel J and by Gageler J in the majority; Keane J and  Gordon J each wrote separate judgments in dissent.

For some background, my previous writings on this case as it has moved through the courts can be read (in chronological order) here, here, here and here.