The parties' submissions
8 The respondent Commissioner submitted that the relief the applicants sought was based on the allegation that the Commissioner had agreed to certain terms in relation to debts the applicants owed the Commonwealth. The applicants' amended statement of claim, which was filed and served on 13 January 2017, substantially expanded the factual matters in dispute. The respondent Commissioner submitted that the additional factual matters put in dispute by the amended statement of claim had been heard and determined, albeit in an interlocutory application, in MNWA Pty Ltd v Deputy Commissioner of Taxation (No 2); Gucce Holdings Pty Ltd v Deputy Commissioner of Taxation [2015] FCA 1128; 109 ACSR 265. In that case the judge rejected contentions that were essentially similar to those made in the amended statement of claim after receiving substantial and detailed affidavit evidence and after two days of cross-examination. In short, the respondent Commissioner submitted, prior to filing the amended statement of claim, the applicants' additional factual contentions had been tested and rejected.
9 The respondent Commissioner's submissions then referred to r 26.12(7) of the Federal Court Rules 2011 (Cth) relating to discontinuance and submitted that the rules envisaged a prima facie entitlement to costs on the part of the party not discontinuing: Travaglini v Raccuia [2012] FCA 620.
10 The respondent Commissioner submitted that while costs are nevertheless discretionary, they usually follow the event and here there could be no suggestion that the respondent had engaged in some disentitling conduct. The applicants obtained none of the relief they sought and the ultimate result was consistent with the Commissioner's denial of any entitlement of the applicants to any relief.
11 This was not a case where a party had achieved the relief sought through other means and then decided to abandon the proceedings: Re Minister for Immigration and Ethnic Affairs; Ex parte Lai Qin [1997] HCA 6; 186 CLR 622. It was also not a case where the applicants had at all times acted reasonably: Australian Securities Commission v Aust-Home Investments Ltd [1993] FCA 401; 44 FCR 194 at [31]. Even if the Court were to apply those decisions, the Court would find that the commencement and maintenance of the additional claims in the amended statement of claim were unreasonable. The applicants were, in effect, seeking to rerun a trial on the same facts. In the course of doing so, they put the respondent to substantial costs not only of responding to lengthy and detailed pleadings but also of responding to the applicants' evidence.
12 The respondent Commissioner submitted that the position here was pedestrian: the applicants had decided not to proceed with their claims. The terms of the agreement alleged by the applicants, as set out in paragraphs [34] and following of their amended statement of claim, were broad and would have affected not only the first applicant but also other entities. Given the ambit of the relief claimed, especially as it affected entities other than the first applicant, there was no reasonable basis for any argument based on alleged irrelevance of the relief or futility. If insolvency (triggered by the voluntary placement of the company into administration) were considered a supervening event in itself, then parties in litigation would be regularly deprived of costs orders in each case where a claimant became insolvent during the course of a proceeding. The respondent Commissioner submitted that position was not supported by law or principle.
13 The respondent Commissioner also submitted that the costs of the applicants' interlocutory application for discovery were reserved by order 4 made on 9 March 2017 and the applicants should be ordered to pay the respondent's costs of that application, given that it had now been abandoned. Further, any order made concerning the costs of the proceedings generally should not affect the costs order made against the applicants in December 2016.
14 The liquidators did not file written submissions on behalf of the first applicant but relied, so far as relevant, on the written submissions filed on behalf of the second to fourth applicants.
15 Those applicants submitted that the appropriate order was that there ought to be no order made as to costs; and, in any event, no order for costs should be made against them, the guarantors.
16 They referred to the proposition in Ex parte Lai Qin, that the proper exercise of the cost discretion will usually mean that the court will make no order as to the cost of the proceedings where both parties had acted reasonably in commencing and defending the proceedings and the conduct of the parties continued to be reasonable until the litigation was settled or its further prosecution became futile, applied generally to all cases that have become futile, whether a party has obtained the relief sought by other means or not.
17 Those applicants submitted that the first applicant sought declarations that, amongst other things, it had not committed an event of default within the meaning of the Deed. The effect of the declarations sought would have been that the Deed would continue in its operation.
18 They referred to a letter dated 7 April 2017 to the first applicant by which the respondent Commissioner stated that cl 10.1 of the Deed provided that the occurrence of an insolvency event constituted an event of default. By cl 10.2 of the Deed, upon the occurrence of an event of default, the Commissioner may immediately enforce the securities and/or exercise his rights under a taxation law, at law or otherwise, and all amounts payable by the first applicant under the Deed would, upon demand by the Commissioner, become immediately due and payable. The Commissioner demanded by this letter the immediate payment of all amounts payable by the first applicant under the Deed.
19 They submitted that the first applicant had irrefutably committed an insolvency event upon its entry into liquidation (if not earlier) and, upon the proper notice period lapsing, the Deed was at an end. The relief sought in the amended originating application became futile. The Deed was at an end for reasons outside the present proceedings.
20 They submitted that the proceedings were commenced and advanced reasonably by all parties. It was by no means certain that the respondent would have succeeded at trial. Orders for discovery had been made and the matter had been listed for a three-day hearing in which at least four witnesses were likely to be subject to cross-examination.
21 They submitted that MNWA Pty Ltd v Deputy Commissioner of Taxation (No 2) at first instance was conducted under s 459G of the Corporations Act 2001 (Cth) and the proceedings were determined under a quite different legal test and subject to a different standard of proof than the present proceedings. They referred to the appeal, MNWA Pty Ltd v Deputy Commissioner of Taxation [2016] FCAFC 154; 117 ACSR 446, where the Full Court found that the matter was interlocutory and a full trial of the issues did not occur.
22 In any event, they submitted, the matters raised in the respondent's submissions were not raised prior to the filing of those submissions and could only deal with the second element of the applicants' case which was the subject of the amendments made in the amended statement of claim. The matters raised by the respondent in relation to MNWA Pty Ltd v Deputy Commissioner of Taxation (No 2) did not feature in the amended defence filed by the respondent on 24 January 2017 and did not form the basis of any strikeout application brought by the respondent. Those matters were not raised in opposition to the application for discovery made by the applicants on 22 February 2017.
23 The second to fourth applicants submitted that a costs order should not be made against them, the guarantors, as they did not take any active part in the proceeding. They were joined as necessary parties. Their rights and obligations may have been affected by these proceedings but it was the first applicant alone that sought the substantive declarations that were the subject of the proceedings. Any costs orders made should be made against first applicant alone. They submitted that these submissions were equally applicable to the reserved costs of the interlocutory application dated 22 February 2017.