AUSTRAC Uncovers A$4 Billion Mortgage Fraud Across Australia’s Five Largest Banks

Australia’s financial crimes watchdog AUSTRAC has uncovered coordinated mortgage fraud worth hundreds of millions to A$4 billion across 10 major banks, predominantly involving Sydney properties. The investigation, known as Operation Claw, found borrowers used fake jobs, inflated incomes, and offshore funds from China to obtain home loans. AUSTRAC has referred hundreds of mortgage brokers, lawyers, accountants, and companies to police, tax authorities, and regulators, warning lenders of systemic weaknesses that could destabilise the A$2.5 trillion mortgage market.

How the fraud scheme worked

Borrowers inflated incomes and falsely claimed employment at fabricated or unverifiable businesses to secure loans. AUSTRAC found loans linked to Sydney properties obtained through fake employment claims. Some used shell companies, fake invoicing, and falsified payslips to hide the true source of funds. In other cases, offshore or third-party money was used to complete property settlements and make mortgage repayments, creating false income streams.

The scale and scope of Operation Claw

AUSTRAC analysed data from 10 major Australian banks covering the vast majority of the mortgage market. The suspected fraud totals hundreds of millions to A$4 billion, with Commonwealth Bank first alerting regulators in February 2026 to an estimated A$1 billion exposure that has since grown. The regulator received roughly 1,800 suspicious matter reports from more than 100 lenders. AUSTRAC has referred hundreds of mortgage brokers, lawyers, accountants and high-risk companies to police, tax authorities and the corporate regulator.

Warning signs and systemic vulnerabilities

The same red flags appeared across all participating banks, including falsified or misleading documents and the repeated use of the same mortgage brokers, accountants, and law firms across multiple applications. AUSTRAC CEO Brendan Thomas said the activity was not confined to one lender or borrower group. He warned that the scale of fraud should be a wake-up call for every lender, as the same vulnerabilities exist across institutions covering the majority of Australia’s mortgage market. Law enforcement is expected to lay charges as investigations progress.

What happens next for lenders and borrowers

AUSTRAC is writing to 143 participants across the mortgage market, including payment companies, urging tighter controls and stronger measures against fraudulent activity. Participating banks have been asked to review their loan books and implement stronger verification processes. The Fintel Alliance, a public-private partnership between banks and officials, has provided names of individuals and entities potentially involved in submitting false documents to ASIC, the Australian Taxation Office, and the Tax Practitioners Board. AUSTRAC said the operation did not identify evidence of widespread money laundering, though it warned that criminals could exploit the weaknesses uncovered.

Final Thoughts

The A$4 billion fraud discovery exposes critical gaps in Australia’s mortgage lending system that regulators and banks must address urgently. With hundreds of referrals to law enforcement and a warning that vulnerabilities span the entire market, lenders face pressure to strengthen verification processes or risk further regulatory action and reputational damage.

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