Post-judgment interest
12The respondents paid the original award of damages made by the trial judge to the appellant within 28 days. Post-judgment interest should therefore only be calculated on $111,297.31, being the additional amount awarded by this Court: see Civil Procedure Act, s 101(1) and (3).
13Post-judgment interest ordinarily runs until the date when the amount owing on the judgment sum is paid to the successful party, "[u]nless the court orders otherwise": Civil Procedure Act, s 101(1). The respondents submit that 20 June 2014 is a more appropriate date to which post-judgment interest should run, being two weeks after this Court handed down its principal judgment. For the reasons provided below, the Court is of the opinion that that date should be adopted.
14Although the sum of $111,297.31 has not been paid as at the date of this judgment, the delay has been caused by the inability of the parties to agree between themselves as to the amount of pre-judgment interest, resulting in the need for this Court to determine the matter. The failure to reach agreement has been caused by the dispute as to the date from which pre-judgment interest should run. In these circumstances, the question arises whether the respondents ought to pay post-judgment interest over the period when the reason for non-payment of the balance of the judgment sum was that determination of the final judgment sum was pending.
15The answer to that question must be informed by the purpose of the award of post-judgment interest. As with pre-judgment interest, the award reflects that a successful party has been kept out of their money over the relevant period. However, the prescribed rate of post-judgment interest is set at 6 per cent above the cash rate: Uniform Civil Procedure Rules 2005 (UCPR), r 36.7, which is higher than the conventional rate for pre-judgment interest. This rate reflects that post-judgment interest is also intended to provide a disincentive to unsuccessful parties to delay payment of a judgment sum.
16The respondents informed the Court that the appellant changed his position in relation to the calculation of pre-judgment interest subsequent to the principal judgment being delivered on 6 June 2014 (see [6] above), and only communicated that change in position to the respondents on 8 July 2014. The respondents submit that this late change in position was unreasonable. The respondents contend that had the appellant acted reasonably, the final judgment sum including interest would have been agreed between them within two weeks of the primary judgment being delivered, that is, by 20 June 2014.
17In the Court's opinion, the appellant was not precluded by election from changing the date from which he submitted pre-judgment interest should be calculated. The Court may confine a party to the case run at trial: Coulton v Holcombe [1986] HCA 33; 162 CLR 1. However, the question of the date from which pre-judgment interest was to be calculated was not in issue at the trial. Nonetheless, the appellant's late change in position did delay the determination of the final judgment sum. Moreover, he has been unsuccessful in persuading the Court to adopt his nominated date. In our view, when the delay in the payment was the result of the appellant changing his position in a significant way, and that change led to a disagreement between the parties that has now been resolved in favour of the respondents, the respondents should not be required to bear the financial disadvantage entailed by an award of post-judgment interest.
18The Court accordingly considers that the date suggested by the respondents as the appropriate date to which post-judgment interest should run, namely 20 June 2014, is reasonable, provided that the respondents pay all monies owing to the appellant pursuant to the Court's judgment and orders within 28 days of these orders. In this regard, the Court notes that the respondents' position is that they will pay the balance of the judgment sum within 28 days of the Court's order. Post-judgment interest, calculated from the date of judgment to 20 June 2014 and at the rates specified in UCPR, r 36.7, is $15,358.26.
19The Schedule annexed to this judgment sets out the calculations discussed in this judgment.
20The Court makes the following orders:
- Vary order (2) made on 6 June 2014, with effect from that date, to read:
Set aside the award of damages made by her Honour and in lieu thereof order that the respondents pay to the appellant damages in the sum of $273,298.00 together with pre-judgment interest in the sum of $120,631.12, so that the judgment sum payable to the appellant is $393,929.12.
- The respondents to pay to the appellant:
(a) If all monies owing by the respondents are paid to the appellant pursuant to these orders within 28 days, post-judgment interest in the sum of $15,358.26; or
(b) Otherwise, post-judgment interest on the amount of the judgment sum as is from time to time unpaid, calculated in accordance with the Civil Procedure Act 2005, s 101.
- The appellant to pay the respondents' costs of the parties' further submissions on the calculation of interest.