Bold opening: A single $44.11 mistake has turned into a test of commercial ethics, as a NSW Supreme Court judge publicly critiqued Westpac for failing to fix a tiny mortgage error that blocked a customer from buying a home.
February 17, 2026 — A NSW Supreme Court judge said Westpac displayed a troubling lack of basic commercial morality after he had to instruct its chief executive to attend court to resolve a $40 mortgage discrepancy that prevented a customer from purchasing a home.
Fiona Vinall, pursuing a case against Westpac-owned St George for misleading and deceptive conduct, secured a win when Justice David Hammerschlag ordered the bank to delete any adverse credit information about her from Equifax Australia.
Vinall’s trouble began when her mortgage repayments rose last July after a rate cut. She inadvertently kept paying the reduced rate a month early, interpreting bank emails stating that the new rate would begin “after July 10 2025” as meaning the lower rate started the following month. The bank contended the lower rate took effect the next month. Hammerschlag found St George’s communications about the rate rise to be, at best, ambiguous and, at worst, liable to mislead.
As a result, Vinall accrued a $44.11 shortfall that the bank reported to credit agencies as “adverse repayment history information.” Federal law requires banks to notify credit rating agencies of such shortfalls within 14 days.
This adverse note significantly damaged Vinall’s credit profile. She later bought a home in Box Hill, Western Sydney, for herself and her daughter, but mortgage brokers said her credit rating made new lending unattainable.
Even though the shortfall was paid by August, Hammerschlag noted the bank’s stubborn refusal to remove the adverse entry when Vinall requested it. She then filed suit, all over a $44.11 discrepancy.
During a January preliminary hearing, St George did not appear because notice hadn’t reached the right department within the bank, despite Vinall’s lawyers contacting Westpac via an court-authorized email. Hammerschlag said Vinall’s team tried to reach the bank repeatedly without success. Justice Michael Slattery, who supervised another related hearing, also attempted to contact the bank without result and subsequently ordered the removal of the negative entry.
At a February 6 hearing, the bank sent lawyers, but refused to withdraw the adverse information. Hammerschlag criticized the bank as presenting “an affidavit from a bank officer seeking to defend the indefensible.” Westpac argued it could not alter the information held by third parties and had only to request Equifax to change it, a step it had not taken.
In response, Hammerschlag demanded that Westpac’s chief executive Anthony Miller appear at the next hearing, describing the move as unusual but not unheard of.
Over the weekend, Westpac moved decisively. Its lawyers informed the judge that steps had been taken to remove Vinall’s adverse payment history from credit registers, and Miller did not need to appear.
In his judgment, Hammerschlag condemned Westpac’s conduct as legally unjustifiable and lacking commercial morality. He noted that the shortfall was trivial in size, that Vinall faced a markedly unequal bargaining position, and that maintaining the adverse credit record caused serious harm—factors he described as unconscionable.
The case will proceed to the District Court for Vinall’s damages claim.
Westpac issued a statement saying it acknowledged the judgment and would review the implications but would not comment further while the matter remains before the court. The bank maintains that it complies with mandatory credit reporting laws, which require reporting missed repayments to credit agencies, and it said it had taken steps to address the issue.
Westpac was also ordered to pay Vinall’s costs. The broader takeaway is a reminder that even tiny accounting or communication errors can escalate into major reputational and legal battles if not resolved promptly.
Would you consider this a fair reprimand for a minor error, or a necessary stand against apparent procedural stubbornness? Share your thoughts in the comments.
