Westpac Faces Scrutiny as $250 Million Ponzi Scheme Highlights Banking Oversight Gaps

Australia’s banking and regulatory sectors are under renewed scrutiny following allegations that Westpac played a role in facilitating a $250 million Ponzi scheme orchestrated by Perth businessman Chris Marco. Liquidators appointed to recover funds for defrauded investors argue that the bank “wilfully and recklessly” failed to investigate suspicious transactions in Marco’s accounts, despite clear regulatory signals.

Marco, recently convicted on 43 fraud charges, operated a complex investment operation over eight years, defrauding investors of $34 million directly linked to six clients. Across a broader investor base, more than 151 individuals transferred over $250 million into multiple accounts held at Westpac between 2010 and 2018. According to court documents, tens of millions of dollars were subsequently diverted to overseas accounts, including $14 million sent to HSBC Jersey, highlighting the cross-border complexity of the scheme.

The liquidators’ statement of claim emphasizes that from March 2016 onward, the scale and frequency of deposits and withdrawals should have raised alarms. For instance, in the first six months of 2016 alone, Marco’s accounts received over $107 million and disbursed $96 million. Despite the Australian Securities and Investments Commission (ASIC) issuing requests for account documentation in August 2017 and again in March 2018 regarding suspected breaches of corporate law, Westpac allegedly continued to process investor funds without further due diligence.

This case illustrates the inherent tension between banks’ operational obligations to promptly execute client instructions and their duty to detect potential fraud. Westpac maintains that it does not “permit” transactions and denies knowledge of Marco’s scheme, citing obligations to act on client instructions. However, liquidators argue that standard internal monitoring and anti-fraud measures should have been sufficient to trigger a review.

The scale and nature of Marco’s operations—diverting $15.1 million to personal assets and $21 million directly to family and related entities—demonstrates how high-value transactions can be abused without rigorous oversight. Legal experts highlight that large deposits inconsistent with a client’s known financial position are classic red flags, and the absence of proactive inquiry may expose banks to civil liability and reputational risk.

From a regulatory perspective, this case underscores the importance of enhanced scrutiny of high-risk accounts, especially those tied to unlicensed investment schemes. It also serves as a warning to brokers and financial institutions handling retail or institutional funds: gaps in verification, oversight, or cross-border monitoring can be exploited, resulting in both investor losses and legal exposure.

The Westpac-Ponzi case signals broader systemic concerns. As financial schemes grow more sophisticated, banks and brokerages must ensure layered anti-fraud systems are in place. These include transaction monitoring aligned with known risk profiles, timely responses to regulatory inquiries, and internal protocols to flag unusual cash flows or cross-border transfers. Investor education, coupled with institutional vigilance, remains critical to reducing exposure to such complex fraud schemes.

The legal proceedings continue in the Supreme Court of NSW, with Marco scheduled for sentencing on 30 October. Regulators, including ASIC, note that the conviction represents the conclusion of an extensive investigation and a reminder of the ongoing need for robust due diligence across Australia’s financial sector. Brokers, banks, and other intermediaries are advised to review client accounts rigorously and maintain comprehensive documentation to mitigate potential liability and protect investors.