Consideration
53 I consider first the applicants' contention that the discontinuance of the proceedings by consent in November 2016 gave rise to an issue estoppel and the Court's powers to deal with abuse of process remained applicable.
54 In my opinion there is a short answer to this point which is that, without more, discontinuance, here discontinuance by consent, as opposed to dismissal, does not found an issue estoppel or an abuse of process: see r 26.14 of the Federal Court Rules. In addition, as in SZFOG at [28], the applicants have adduced no evidence of any oppression or unfairness. Indeed it is the applicants who have brought the present case and not the respondent Commissioner.
55 I see nothing of present relevance in the general reference in Batistatos at [65] to the principles respecting abuse of process. That case concerned the commencement of proceedings in negligence against the council and the road construction authority some 29 years after a road accident, the High Court holding that the lapse of time was so serious that a fair trial was not possible. Neither do I see anything of present relevance in Mango Boulevard, which did not concern discontinuance, or discontinuance by consent, of earlier proceedings.
56 I accept that the categories of abuse of process are not closed, see Kermani at [94], but here there has been no re-litigation of matters determined in a previous proceeding. Mere discontinuance does not constitute abuse of process.
57 I reject the applicants' submissions founded on the bare discontinuance of the earlier proceedings.
58 Turning to the Deed, in my opinion, cl 3.6(k) was engaged, in that a valuation procured by the Commissioner indicated that the valuation of the Property, meaning the properties Lot 9005 and Lugg Place, was less than the valuation provided by the taxpayer or the guarantors.
59 There is no doubt that there was a written demand from the Commissioner, being the 4 May 2017 Demand.
60 The next question is whether the taxpayer, within 30 days of the written demand, provided "a mortgage over additional property which has unencumbered equity of at least" $5,850,000.
61 In my opinion, this is a question of fact, that is, whether the mortgages provided were mortgages over additional property having that unencumbered equity.
62 I do not accept that the definition of "Equity Value" is to be read into cl 3.6(k), as contended by the applicants. First, those words do not appear in cl 3.6(k). Secondly, the purpose of cl 3.6(k) is, as its language makes clear, to deal with a difference between the Commissioner's valuation and the valuation provided by the taxpayer or guarantor. The resolution is by reference to unencumbered equity of at least half the difference between those valuations.
63 I turn to consider the authorities relied on by the applicants.
64 Legal & General Life of Australia Ltd concerned a lease providing that the initial rental of $88,800 per annum should be subject to two yearly revisions which, in the event of disagreement, were to be made by a "qualified valuer … acting as an expert and not as an arbitrator …". A company was appointed to make the revision. It decided that the revised rent should be $141,200 per annum. The lessee did not accept that that decision was binding on it, and sought a declaration that it was not. In that context, McHugh JA said, at 335-336:
In my opinion the question whether a valuation is binding upon the parties depends in the first instance upon the terms of the contract, express or implied… [I]t is easy to imply a term that a valuation must be made honestly and impartially. It will be difficult, and usually impossible, however, to imply a term that a valuation can be set aside on the ground of the valuer's mistake or because the valuation is unreasonable. The terms of the contract usually provide, as the lease in the present case does, that the decision of the valuer is "final and binding on the parties". By referring the decision to a valuer, the parties agree to accept his honest and impartial decision as to the appropriate amount of the valuation. They rely on his skill and judgment and agree to be bound by his decision… While mistake or error on the part of the valuer is not by itself sufficient to invalidate the decision or the certificate of valuation, nevertheless, the mistake may be of a kind which shows that the valuation is not in accordance with the contract. A mistake concerning the identity of the premises to be valued could seldom, if ever, comply with the terms of the agreement between the parties. But a valuation which is the result of the mistaken application of the principles of valuation may still be made in accordance with the terms of the agreement. In each case the critical question must always be: Was the valuation made in accordance with the terms of a contract? If it is, it is nothing to the point that the valuation may have proceeded on the basis of error or that it constitutes a gross over or under value. Nor is it relevant that the valuer has taken into consideration matters which he should not have taken into account or has failed to take into account matters which he should have taken into account. The question is not whether there is an error in the discretionary judgment of the valuer. It is whether the valuation complies with the terms of the contract.
(Original emphasis.)
65 I accept that whether a valuation is binding upon the parties depends in the first instance upon the terms of the contract, express or implied. However, I see no relevant similarity between the terms of the lease there under consideration and the present Deed. Here the parties have not agreed that the valuation report provided by the taxpayer was to be "final and binding on the parties". Neither have the parties referred or agreed to refer the decision to the taxpayer's valuer, or agreed to be bound by his decision.
66 The applicants referred to Holt v Cox as authority for the proposition that even if there was a mistake in the methodology, if the instructions were not explicit as to the methodology, then a party could not impugn a finding. That case concerned whether an auditor had validly determined a "fair price", in accordance with the articles of association, at which five "A" class shares in F P Leonard Advertising Pty Ltd must be offered to the existing shareholders. Justice Santow held that the auditor was acting as an expert rather than an arbitrator and, at 333, applied Legal & General Life of Australia, that is, where a valuation is made as an expert, the issue of whether it is binding on the parties depends on the terms of the contract. It was held that if the contract, expressly or impliedly, provides that the decision of the valuer is "final and binding on the parties", a valuation made in accordance with the terms of the contract will be binding as between the parties, even if made negligently, or in mistaken application of the principles of valuation, including failing to consider relevant matters or misvaluing the asset. Where a contract does not expressly use words to the effect that the valuer's determination should be final and binding, it will come down to the terms of the particular contract as to whether this should be implied. However, the effect of an agreement by the parties that the matter should be determined by a valuer, in the absence of an indication in the contract to the contrary, will generally be that the parties have agreed to accept the valuer's decision as final and binding, provided he or she acted honestly, impartially and in accordance with the terms of the contract. I repeat the comments I made in relation to Legal & General Life of Australia at [65] above.
67 Lahoud v Lahoud was a case involving an accountant's audit under cl 2 of a Deed of Settlement, giving each party a right (in the same terms as had the Terms of Settlement) to elect to have an audit carried out. At [42], Ward J, as her Honour then was, applied Legal & General Life of Australia, noting that it was accepted by the parties by way of general principle that, absent actual fraud or collusion, an expert determination will be rendered ineffective and liable to be set aside only if it is affected by a mistake which renders it not in accordance or in conformity with the contractual contemplation of the parties in the sense considered in Legal & General Life of Australia; and that apprehended bias is not sufficient (Andrews v Queensland Racing Ltd [2009] QSC 364, McMurdo J). Again, I see no relevant similarities between that Deed of Settlement and the present Deed.
68 In McGrath v McGrath, Pembroke J applied Legal & General Life of Australia at [11]. His Honour said, in relation to the process by which the parties agreed that the defendant's shares in a holding company should be bought out, that process requiring a valuer to be appointed and instructed to determine the fair market value of the Group:
When the parties identified and agreed on Mr Collins as the proposed Valuer, they did so because they relied on his skill and judgment. They implicitly agreed to accept his honest and impartial decision as to the value of the McGrath Group. So long as Mr Collins, when appointed and instructed, carries out his engagement in accordance with the terms of the Shareholders Agreement and the Heads of Agreement, and arrives at his decision honestly and in good faith, the parties will not be able to re-open it and will be bound by the result. Mistake or error by Mr Collins in the process of valuation will not invalidate his decision: Legal & General Life of Australia v A Hudson Pty Ltd (1985) 1 NSWLR 314 at 334-336 (McHugh JA). On the other hand, if he asks himself the wrong question or misconceives his function, he will not have performed the task required of him by the contract: TX Australia Pty Ltd v Broadcast Australia Pty Ltd [2012] NSWSC 4 at [23] (Brereton J); AGL Victoria Pty Ltd v SPI Networks (Gas) Pty Ltd [2006] VSCA 173 at [51].
69 In contrast, under the present Deed, the parties have not agreed on anyone as the proposed valuer and in my opinion have not, therefore, expressly or impliedly agreed to accept Mr MacEwan's decision as to the value of the Spalding Property.
70 The applicants referred also to Dobbs v National Bank of Australasia Ltd [1935] HCA 49; 53 CLR 643 at 651, but that case concerned a contract which provided that a certificate signed by a bank manager "shall be conclusive evidence of the indebtedness at such date of the customer to you". Even by analogy, this authority does not assist the applicants.
71 In Hall v Busst at 222, relied on by the applicants, the issue being considered by Fullagar J was whether any agreement for sale "at a fair value" would be enforced in equity. His Honour said it would be quite contrary to principle to so hold. In any event, the present Deed does not involve a sale at a valuation to be made by a named person. In my opinion, the analogy the applicants seek to make does not hold.
72 In summary, the Commissioner wished to, and did, procure a valuation for the purpose of invoking his right pursuant to cl 3.6(k) of the Deed. That valuation indicated that the valuation of the Property was less than the valuation provided by the taxpayer or guarantor. The taxpayer provided a mortgage over additional property, the Spalding Property, but that additional property did not have an unencumbered equity of at least half the difference between the Commissioner's valuation and the valuation provided by the taxpayer or guarantor. The clause does not use the defined terms contended for by the applicants. This is not a question of "going behind" a valuation but of determining what is the unencumbered equity of the additional property. As I have said, this is a question of fact. Neither is this a case where the parties have agreed to be bound by a valuation.
73 Although not necessary to my conclusion, I repeat my finding, at [28] above, that Mr MacEwan's valuation of the Spalding Property of $5.700,000 was the future value of that Property based on a series of contingencies and assumptions occurring in the future and that his valuation was not the value of the Spalding Property as at 10 May 2017.