The Estoppel Argument
32At first instance the Borrowers contended that Equititrust's conduct led them to make the following assumption:
"That [Equititrust] would accept payment of interest calculated at the Lower Rate notwithstanding the expiry of the initial term of a loan facility, provided such interest was paid in a timely manner and [the Borrowers] paid a Loan Expiry/Extension Fee".
33Whilst Equititrust argued that on appeal the Borrowers sought to rely upon a materially different assumption, it seems to me that in substance the Borrowers adhered to this contention on appeal. However, as the primary judge pointed out (Judgment [45]) Mr Demian, who gave evidence on behalf of the Borrowers, did not give clear evidence that he, and therefore the Borrowers, made this assumption. What Mr Demian said was that Equititrust led him to believe that Equititrust "continued to offer the various facilities to the [Borrowers] until at least July 2010 without any charge for default interest because of the expiry of [the] facilities" (Affidavit of 27 April 2010 at [7]). This evidence did not, at least in terms, suggest that Equititrust at any stage promised not to charge interest at the Higher Rate. Rather, it was framed as an explanation for what Equititrust did in fact do.
34Mr Demian listed a number of matters that he indicated that he "took ... into account" in forming the belief to which he deposed.
35One of these was a conversation in which Mr Demian asserted that an officer of Equititrust told him that after the facility expiry dates Equititrust would only charge the Loan Expiry Fee (referred to in the Special Covenant in Item 14) and would not charge "default interest". The primary judge rejected Mr Demian's evidence of this conversation and also that of a conversation to similar effect that Mr Demian included in his list and said occurred in June 2009 (Judgment [51]-[54]).
36On the appeal the Borrowers did not challenge these rejections. As Mr Demian had not given evidence that the other matters that he listed independently gave rise to his asserted belief, the Borrowers were left without any evidence that the conduct of Equititrust led them to form a relevant belief. This result is fatal to the Borrowers' estoppel argument as an essential element of a promissory estoppel is that the party claiming the benefit of the estoppel must have been induced by the other party to adopt a particular assumption or expectation on which the former acted to its detriment (see for example, Waltons Stores (Interstate) Ltd v Maher [1988] HCA 7; (1988) 164 CLR 387 at 428-9).
37A further reason that the Borrowers' estoppel argument fails is that if the Borrowers did make the relevant assumption as a result of Equititrust's conduct, that conduct was, for the reasons given below, not clear and unambiguous. The consequence is that it was not reasonable for the Borrowers to rely upon it and Equititrust cannot be expected to have anticipated that the Borrowers would rely on it in that way.
38Being unable to rely upon Mr Demian's rejected evidence of conversations with an officer of Equititrust, on the appeal the Borrowers relied only upon the following alleged conduct of Equititrust:
"(i) When the [Guildford] facility ($2,315,000) expired on 13 April 2007 the Respondent charged a loan expiry fee but kept charging and accepting interest at the lower rate. Further the Respondent proceeded to enter into the Summer Hill ($8,200,000) and Demian Construction ($3,630,000) facilities even though the [Guildford] facility had expired notwithstanding the fact that, as a result of the deed of collateralisation any default in one facility was a default in each of the facilities;
(ii) On 15 August the CTP facility expired. Again the Respondent charged a "loan expiry fee" but continued to charge and accept interest at the lower rate;
(iii) On 5 November 2008 the Respondent sent the Appellants an email advising of the interest payable on the various facilities for the period November 2008 to January 2009. The interest claimed was interest at the lower rate; and
(iv) The terms of the letter of offer whilst referring to the expiry fee make no reference to interest at the higher rate also being payable if the loan passes its expiry date without being repaid" (Written Submissions [5.1]).
39The Borrowers reliance on the first two matters ((i) and (ii)) involved the implicit submission that because Equititrust charged interest at the Lower Rate after the Guildford and CTP facilities expired but were not repaid, it impliedly promised the Borrowers that no claim for interest at the Higher Rate would be made in similar circumstances in respect of the other three facilities. It is only interest on these other three facilities that is in issue in the proceedings. In my view however, the matters relied upon did not give rise to that implication, certainly not one that was conveyed in a clear and unambiguous fashion. A borrower is not, without more, entitled to assume that because a lender acts in a particular manner in one transaction, it will act similarly in another.
40The relevant parts of the email referred to in sub-para (iii) were as follows:
"[I] thought [I'd] drop you a note to inform you of your upcoming interest payments to assist with your cashflow.
[Interest amounts for three months in respect of two of the facilities then appeared. They were calculated at the Lower Rate.]
...
Payments are due on the 15 th of each month. There is currently a 'zero tolerance' on unpaid/late interest across the book at present. If interest isn't received by the due date default notices will be issued within 7 days. If you've got any question with any of the above please don't hesitate to contact me".
41This email cannot reasonably be construed as conveying that Equititrust intended to abandon its right to charge interest at the Higher Rate. As indicated by its terms, the figures given were directed to "cashflow" in the immediately following months, rather than to ultimate legal entitlement to interest.
42The assertion in sub-para (iv) quoted in [38] above involves a misstatement of the terms of the letters of offer that preceded the parties' entry into the Deeds. The letters of offer referred, albeit at different places in the letters, both to the charging of interest at the "default rate" in the event of default and to the charging of a loan expiry fee if the loans were not fully repaid at the date of expiry of the facilities. In any event, the arrangements recorded in the letters of offer were superseded by those in the Deeds (see Clause 27.2).
43For these reasons Equititrust did not engage in any clear and unambiguous conduct that was capable of inducing the Borrowers to form the assumption that they contend that they formed. As a result, any reliance by the Borrowers upon the conduct that they identified on the appeal was not reasonable and Equititrust can have had no reasonable expectation that the Borrowers would rely upon that conduct in the way that they contended that they did. In these circumstances the Borrowers' estoppel argument fails.