NAB investigation reveals involvement of accountants in major loan fraud

Business

The major bank has referred multiple parties to the authorities for their alleged involvement in a sophisticated loan fraud syndicate targeting the big banks.

01 July 2026 By Miranda Brownlee 4 minutes read
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An investigation by NAB into a criminal mortgage fraud syndicate has revealed that various accountants, advisory firms, and mortgage brokers were involved in producing fraudulent financial statements and loan applications targeting the big four banks.

The major banks have been reviewing their loan books after the Commonwealth Bank of Australia (CBA) discovered earlier this year that around $1 billion in home loans had been fraudulently obtained through doctors' applications and AI-generated fake documents created by AI.

In a statement issued by NAB, the major bank said the mortgage industry was contending with "heightened and increasingly sophisticated fraud environment" and that the bank was investing significant resources and expertise to fight the threat.

NAB said it had referred multiple parties to the appropriate authorities and had exited or suspended a number of parties from the bank.

"We will continue to take an uncompromising stance on anyone who engages in illegal or unethical behaviour," the major bank said.

According to reports by The Australian Financial Review, the NAB investigation alleged that companies and individuals involved in the fraud operation were "using fraudulent financial statements authored by complicit accounting firms" to obtain mortgages.

The NAB investigation also alleged that an accounting firm appeared to be "a common source of fraudulent financial documentation" for the fraudulent loan applications, according to the Financial Review.

 
 

NAB said the mortgage fraud uncovered in its investigation was a complex, organised crime spanning industries and borders.

"These risks aren’t confined to any one institution or just banks. Brokers, real estate agents, lawyers, accountants, conveyancers, and other industries that support mortgage lending are facing the same threat from corrupt professional facilitators and organised crime," it said.

"NAB is working closely with peers through the Fintel Alliance and directly with law enforcement to share intelligence and strengthen the collective response, but industry efforts alone are not enough," it said.

"NAB is calling for the development of a National Economic Crime Strategy. This will develop a coordinated national approach to better protect Australian customers, industry, and the broader economy by enabling stronger intelligence sharing, deeper cross-sector collaboration, and more consistent regulatory settings to fight economic crime at the source."

The major bank said that tackling this threat would require a step change in how banks, regulators, law enforcement, and government work together. Without it, we risk focusing on individual cases while the global networks behind them continue to operate.

"This is a system-wide problem, and it requires a system-wide response," the major bank said.

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Miranda Brownlee

AUTHOR

Miranda Brownlee is the editor of Accountants Daily and Accounting Times, the leading sources of news, insight, and educational content for professionals in the accounting sector.

Miranda has over a decade of experience reporting on the financial services and accounting sectors, working on a range of publications including SMSF Adviser, Investor Daily and ifa. 

You can email Miranda on: miranda.brownlee@momentummedia.com.au
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