Background
5The relevant facts are not in dispute. They are contained in a Statement of Agreed Facts (Black 69). Briefly, on 30 November 2007, the Bondi entities and various associated companies entered into arrangements with National Australia Bank (the Bank) for the raising of funds for the acquisition of a property in Bondi. Those finance arrangements involved the issue and on-sale of loan notes with a mechanism for the deferral of the purchase price for those notes until the date on which the notes were to be redeemed. What transpired, relevantly, was as follows.
6On 3 December 2007, notes were issued by Bondi Notes Pty Limited (the Issuer and not one of the Bondi entities) and subscribed for by the Bank under the terms of a Senior Note Facility Deed dated 30 November 2007. The Notes were uncertificated instruments with a face value of $92,006,545. Unless redeemed earlier in accordance with the deed, the Notes were to be redeemed on the Termination Date, which was defined in the deed as 3 April 2009.
7The proceeds of issue of the Notes were immediately provided by the Issuer to the Bondi entities by way of loan under a Senior Issuer Loan Agreement also dated 30 November 2007.
8Pursuant to a Senior Note Sale Agreement entered into by the Bank and the Bondi entities also on 30 November 2007, the Bondi entities agreed to purchase the Notes from the Bank on the day of their issue for a purchase price equivalent to the face value of the Notes.
9Clause 4.1 of the Senior Note Sale Agreement obliged the Bondi entities to pay the purchase price for the Notes at Completion. Completion was to occur on the date that the Notes were issued to the Bank under the Senior Note Facility Deed (clause 5.2). However, subject to satisfaction of each condition precedent in accordance with the Senior Note Facility Deed, the Bondi entities were able to elect to defer payment of the purchase price until a deferred payment date (clause 4.2), in which case interest on the purchase price was payable in accordance with the Senior Note Sale Agreement (clause 4.3). Such interest was to be capitalised (clause 6.3).
10The Notes were duly transferred to the Bondi entities. A deferment notice was issued by the Bondi entities on the same day deferring payment of the whole of the purchase price for the Notes to the Termination Date (i.e., 3 April 2009) or any earlier date on which the Notes were to be redeemed under the Senior Note Facility Deed.
11As security for their obligation to pay the deferred purchase price and interest in respect of the Notes, the Bondi entities and associated companies entered into various security documents in favour of the Bank. For present purposes, there was no material difference between the security documents. They included a Fixed and Floating Charge (the Charge) under which the chargors included the Bondi entities. The Charge under the Senior Issuer Loan Agreement did not secure the obligations of the Bondi entities to repay to the Issuer the amounts lent to them under that agreement. The definition of "secured money" in the Charge adopted the definition of that term in the security trust deed as being all moneys owing and all obligations under any of the secured transaction documents, the latter not including the Senior Issuer Loan Agreement.
12In summary, therefore, under the finance arrangements (referred to as a deferred purchase arrangement), the Bank did not directly lend or provide any funds to the Bondi entities. Rather, the Issuer lent funds to the Bondi entities, those funds having been obtained by the Issuer from the subscription by the Bank for the Notes. The Bank in turn sold the Notes to the Bondi entities, payment for which was due on Completion (the date of issuance of the Notes) but was deferred in accordance with the Senior Note Sale Agreement to 3 April 2009 (and, as will be described shortly, successively from then until 31 August 2011). Payment for the Notes, and interest on the purchase price, was secured by the Charge. With capitalisation of the interest, the amount outstanding under the Senior Note Sale Agreement as at 3 April 2009 was $102,600,000.
13The Charge was initially stamped at $5.00. It was not suggested that the Charge was liable for any greater duty when first stamped. The Chief Commissioner accepts (for the reasons given in Prime Wheat Association Ltd v Chief Commissioner of Stamp Duties (NSW) [1999] NSWSC 546; (1997) 42 NSWLR 505 and referring also to Handevel Pty Ltd v Comptroller of Stamps (Vic) [1985] HCA 73; (1985) 157 CLR 177 at 193-4) that the Charge, which secured the payment of the unpaid purchase price for the Notes (not the repayment of the loan made by the Issuer to the Bondi entities), fell outside the mortgage duty provisions at the time it was executed (Orange 20 [13]).
14As noted, the time for payment of the purchase price for the Notes was extended beyond 3 April 2009. There were nine extensions in all. In at least some instances, the extension was effected after the purchase price (and interest thereon) had already become due and payable. The means by which the successive extensions were effected was that, on each occasion, the Senior Note Facility Deed was varied by substitution of a later date in the definition of "Termination Date" contained in the Senior Note Sale Agreement.
15The variation deeds were for the most part in similar terms, although there were some differences. The First Variation Deed (entered into on 3 April 2009) provided in clause 3.1(a) for the deletion of clause 6 of the Senior Note Facility Deed. Clause 6 was the provision under which the initial extension of the Termination Date was permitted but in its terms it permitted only one such extension (clause 6.6). The Ninth Variation Deed (dated 18 January 2010) differed slightly in its terms from the preceding deeds in that it not only varied the Senior Note Facility Deed (clause 3.3) but also restated it (clause 2). It was not, however, suggested that anything turned on either of these differences. The Ninth Variation Deed also provided for the reduction of the facility limit over time by payment down of the purchase price and the provision of an overdraft facility.
16For the Bondi entities, reliance is placed on the fact that none of the relevant deeds of variation operated in terms as a rescission of the then existing agreement and substitution of a new agreement.
17The Chief Commissioner did not contend that the initial deferment of the purchase price (by the deferment notice issued on 3 December 2007) or any of the first six variation deeds constituted an "advance" giving rise to a liability for additional mortgage duty. Nor did the Chief Commissioner contend that the fact that the Bank had chosen not to enforce its right to payment in any of the intervals between moneys becoming due and payable and the relevant variation being effected was a forbearance constituting an "advance" for the purposes of the mortgage duty provisions.
18However, on 1 July 2009, Schedule 1.3 of the State Revenue Legislation Further Amendment Act 2009 (NSW) came into effect. The Chief Commissioner contended that, as a consequence of the amendments there introduced, the seventh deed of variation (and for that reason also the following eighth and ninth deeds) gave rise to a liability for additional mortgage duty pursuant to s 208(2) of the Duties Act. The three deeds of variation in question were those entered into on 28 August 2009, 2 October 2009 and 18 January 2010. Senior Counsel appearing for the Chief Commissioner, Mr Gibb SC, explained the reason for this to the primary judge (Black 61; T 8.35-47) as being due to the broader ambit of s 213(1) of the Duties Act following the 2009 amendment.
19Relevantly, before the 2009 amendments, s 213(1) referred to the amount secured by the mortgage as "the definite and limited sum, until such time (if any) as a greater amount of advances is secured by the mortgage". In Mr Gibb's submission, the word "greater" arguably implied a further amount of advances and hence that there had been an "initial" advance. After the July 2009 amendments, the wording of s 213 was changed to refer to the amount of "any advances", hence removing any limitation introduced by the use of the words "greater amount of advances" in the previous version.
20By letter dated 24 December 2010, the Chief Commissioner issued a Duties Notice of Assessment for mortgage duty on the full amount of the purchase price and capitalised interest in respect of the Notes as at 28 August 2009. The Chief Commissioner did so on the stated basis that, on each of 28 August 2009, 24 September 2009 and 18 January 2010, there was, in the words of s 206(a)(iii) of the Duties Act, a "forbearance [by the Bank] to require the payment of money owing on any account whatever" and therefore an "advance" under s 206; and that the "advance" on 28 August 2009 was in the amount of $102,600,000 (that being the full amount of the deferred purchase price with capitalised interest to that date). The dutiable amount or the "amount secured" was therefore said to be the aggregate of the face value of the Notes issued with capitalised interest. (While the Chief Commissioner contends that each of the three post-July 2009 deeds of variation involved an additional advance, the Chief Commissioner does not accept that this has the consequence that double or multiple duty is thereby assessable.)
21Following the disallowance by the Chief Commissioner of an objection by the Bondi entities to that assessment, proceedings were commenced by the Bondi entities pursuant to s 97 of the Taxation Administration Act 1996 (NSW), seeking a review of the Chief Commissioner's assessment.