A forged bank statement used to take effort and some skill. Now a borrower with a laptop can produce a convincing one in minutes, and that shift is landing squarely on the desk of the mortgage broker who passes it to a lender.
That is the practical problem behind a warning from two senior figures at broker aggregators. Their message is blunt: a broker who takes client-supplied paperwork at face value is exposed. Detection software at the lender’s end does not move that exposure anywhere else.
Why the liability stays put
Brokers operate under responsible lending obligations. In plain English, they must take reasonable steps to confirm a client’s income, expenses and liabilities before putting a loan forward. A lender’s fraud tools are a second line of defence, not a substitute for the first.
That matters because it settles an argument before it starts. If an altered document gets through, “the lender’s system didn’t flag it” is not a defence a broker can lean on. The duty to verify sits with the person who collected the document and vouched for the application.
Key numbers
- The aggregators did not treat any single AI-usage statistic as proof of fraud, since use ranges from tidying a cover letter to inventing a statement.
- Source verification, built on borrower consent, is where the industry is heading.
- ATO income data is seen as especially useful for self-employed borrowers.
Not every AI-touched document is a fraud
This is the complicating factor. Plenty of borrowers use AI to tidy a letter of explanation or summarise their situation. That is harmless. The aggregators were careful to separate that from fabricating a statement or payslip.
The risk for brokers is two-sided. Treat every AI-assisted file as suspect and you slow honest clients down. Wave everything through and you carry the downside of the rare forgery. The skill is in knowing which anomalies actually matter.
What brokers are being told to look for
The red flags are mundane, which is what makes them useful:
- Running balances that do not reconcile line by line.
- Fonts that shift partway through a document.
- Transaction descriptions that look unfamiliar for that bank.
- Salary credits that do not match the figures on the payslips.
- File metadata that does not fit the story the document tells.
Some fraudsters pay for payroll software subscriptions to generate payslips that look authentic. Those can still be exposed by cross-checking against bank records and ATO data, because a clean-looking payslip cannot easily make the underlying money trail agree with it.
The suggested sequence is simple. Query the client first. If doubts remain, stop, document the concerns and escalate to the compliance team rather than quietly proceeding.
What stricter verification could mean for approvals
Here is the second-order effect. If consent-based verification becomes the norm, the path of least resistance changes. Instead of a client emailing PDFs, the broker or lender pulls income and transaction data directly with the borrower’s permission.
That could cut approval times for straightforward salaried borrowers, because data arrives clean and checked. It could slow things for the self-employed and anyone with irregular income, whose files already need more judgement. ATO data helps there, but it will not explain every business income pattern on its own, and broker judgement stays essential.
There is also a credit access question. A tighter net catches fraud, but it can also snag borrowers whose paperwork is messy rather than false. Expect some friction at the margins.
What this means for property buyers and investors
If you are borrowing, assume more verification is coming, and make it easy:
- Supply original, unedited documents downloaded directly from the source.
- Do not “tidy” a statement or payslip, even to fix a formatting quirk.
- Be ready to explain any unusual transaction before you are asked.
- If you are self-employed, line up ATO records and tax returns early.
For investors with several loans in progress, this is worth planning around. A file that stalls on a verification query can push settlement timing, and in a competitive purchase that has real cost.
The broader point is about trust in the channel. Property investors lean heavily on brokers, a dependence we covered in our look at how broker commission disputes expose fragility in the channel. Fraud that slips through erodes lender confidence, and lenders respond by tightening for everyone. For a wider primer on how the lending side fits together, see our guide to home loans, lenders and refinancing.
The practical next step: ask your broker how they verify income and statements, and send documents straight from source. Subscribe to the newsletter for weekly lending and market signals.
General info, not financial advice.
