it may dismiss the petition."
4 The power of the Court to go behind a judgment giving rise to a judgment debt arises either under s 52(2)(b): In re Beauchamp; Ex parte Beauchamp [1904] 1 KB 572 at 581; Wren v Mahony (1972) 126 CLR 212 at 233, or under s 52(1): Corney v Brien (1951) 84 CLR 343 at 347.
5 The existence of a judgment is prima facie evidence of a debt. However, a judgment is never conclusive in bankruptcy, and the court has a discretion to go behind it to determine whether there is in truth and reality a debt due. Before the court will exercise the discretion, substantial reasons must be shown for questioning whether there is in truth and reality a debt owing to the creditor. The court will not inquire into the validity of a judgment debt as a matter of course. It will, however, be more readily persuaded to do so where there has been no adjudication on the merits, for example where the judgment has been obtained by default, and there exists a bona fide allegation that no real debt lies behind the judgment. See Re Longo; Ex parte Longo (1995) 57 FCR 523 at 527 per Cooper J and the cases there referred to. In Emerson v Wreckair Pty Ltd (1992) 109 ALR 539 at 546‑547 a Full Court held that upon an application to set aside a bankruptcy notice, the court should not go behind a judgment where the challenge to the judgment, if successful, would merely result in a reduction in the amount of the debt and not a finding that there is no debt at all. In Re Riviere; Ex parte Original Mont de Piete Ltd (1919) 20 SR (NSW) 77 at 84 Owen AJ said:
"the court will only reconsider the judgment in order to ascertain whether the petitioning creditor's debt, on which the bankruptcy proceedings have been founded, should be struck out altogether. … The court does not reconsider the judgment merely with a view to seeing whether the judgment debt should be reduced, but in order to ascertain whether the creditor has a debt upon which the bankruptcy proceedings can be founded."
In Olivieri v Stafford (1989) 91 ALR 91 at 109‑110 Gummow J said that those observations were applicable to the Act. In Emerson, Riviere and Olivieri the court was invited to go behind a judgment on an application to set aside a bankruptcy notice. However, I see no reason why the principle those cases espouse, namely that the examination of the judgment is for the purpose of showing that there is in truth no debt upon which bankruptcy proceedings can be founded, should not apply to an invitation to go behind a judgment in the context of an application for a sequestration order.
6 The respondent wanted the Court to go behind the judgment with a view to establishing that the Bank had debited his accounts and those of his company, McDonald & Co Pty Ltd ("the company"), with more interest on their borrowings than had been agreed, and had imposed bank charges it had agreed not to impose. The excess interest the Bank is said to have debited, and the charges it is said to have imposed, were not particularised. In his affidavit, immediately after setting out what he asserts are the excessive interest rates, the respondent states that in his first year with the Bank interest totalled $277,804.60. Presumably the over‑payments are part of this amount. On the respondent's account the terms agreed between him and the Bank are contained in the Bank's letters of 13 February and 13 March 1989. The second letter contains the interest rates applicable to the various overdrafts and fully drawn loans. All are concessional rates expressed as a percentage reduction on the Bank's reference rate. The reductions range from 5 per cent to 1 per cent. The first letter identifies the security for the loans: a registered equitable mortgage over the company's rent roll, and a joint and several guarantee by the respondent and his wife supported by registered mortgages over five properties - 66 Swan Street Keilor Park, 2/39 Dinah Parade East Keilor, 108 Wheatsheaf Road Glenroy, 60 Bonwick Street Fawkner and 12 Boston Road Torquay. The second letter notes that all interest rates quoted are variable, all the Bank's account keeping fees and charges will be waived, and the Bank will absorb stamp duty and establishment fees for the initial transfer of the group's business from Westpac. The letter concludes: "Future loan transactions during the following 12 months will attract normal establishment fees, with full review of all concessions in April 1990".
7 I accept the evidence of Mr Woods, one of the Bank's Managers, that at the expiration of the first year of the banking relationship the Bank was at liberty to review all the concessions applicable to the accounts. A letter from the Bank to the respondent dated 12 April 1990 discloses that the Bank had varied the concessional interest rates. The concession on most accounts had been reduced but not cancelled. In the case of nine accounts, the new rate involved a concession of 2.25 per cent on the Bank's standard rate. In other cases concessions of 1.25 per cent and 1 per cent were granted. In two cases there was no concession. The Bank had also reinstated the standard fees that had earlier been waived. The letter sets out the interest paid in the first year of the arrangement. It totals $277,804.60. Although the matter was not explored before me, I infer from the Bank's letter of 13 March 1989, in which it reserved the right to review all concessions in April 1990, and its letter of 12 April setting out new rates and charges, that it had charged the agreed rates for the first year, and that the sum of $277,804.60 was the amount paid in that year at those rates.
8 The Bank contends that the agreed terms are contained in its letter of 30 March 1989. This is in substantially the same terms as the earlier letters save that it states that the concessional interest rate applicable to the overdrafts applies only up to the approved overdraft limits, and that any excess will attract the excess rate, which was then 23.5 per cent. The respondent contended that he had never agreed to this, and that the Bank had sought to introduce it after agreement had been concluded in terms of the earlier letters. However, nothing turns on this disagreement, at least so far as the first year is concerned, because in its letter of 12 April 1990 the Bank said it had waived the excess rate and had applied only the reference rate.
9 In another part of his affidavit the respondent estimates that as at 8 July 1991 he had incurred $612,839.66 in "interest charges as well as further bank charges" since transferring to the Bank. He then says that had the Bank charged interest at the agreed rates and imposed no bank charges, the McDonald Group would have been solvent and would have been able to trade out of its apparent financial difficulties. The basis for the estimate is not given. But more importantly, it is not an estimate of the amount the Bank charged the respondent over and above the amount that on the respondent's account it was entitled to charge. The implicit claim that the $612,839.66 includes some interest the Bank was not entitled to charge ignores the fact that at the expiration of the first year the Bank was at liberty to review the concessions it had granted, and that it did review them. On the respondent's account the concessions included a waiver of the excess rate that would otherwise have been payable on the overdrafts that were over the agreed limit. But the Bank was free to review that concession, and appears to have done so after the expiration of the first year. It was also entitled to reinstate the waived charges at the end of the first year.
10 Even if, contrary to my view, the respondent could establish that the Bank overcharged interest and imposed bank charges it had agreed not to charge, I would not on that account have gone behind the judgment. The respondent did not attempt to split the $612,839.66 into its legitimate and illegitimate parts. But the bulk of it would represent interest that, on the respondent's account, the Bank was entitled to charge. If the respondent were to establish overcharging of, say, $200,000, that would result in but a small reduction of the amount of the judgment debt ($1,964,609.25 instead of $2,164,609.25), and not in its extinguishment. There would be no point in going behind the judgment. The bank charges the respondent says should not have been imposed were not quantified. While they would inflate the amount overcharged, the amount due under the "adjusted" judgment would still be in the order of $1,900,000.