Ottawa Already Holds the Income Data That Could Curb Mortgage Fraud

A Notice of Assessment usually reaches a lender as a PDF, and a PDF can be edited on any laptop in a few minutes. The T4 that comes with it is no harder to change. Meanwhile the real figures, the ones the borrower actually reported and was assessed on, sit inside the Canada Revenue Agency where no lender can see them.

That gap is the whole issue. Canadian mortgage underwriting checks copies of income evidence, and the government already holds the originals. This October, Mortgage Professionals Canada renewed its call for Ottawa to build a secure tool that would let lenders confirm income directly with the CRA, with the borrower's explicit consent, as part of its submissions for the 2027 federal budget. For anyone who arranges, funds or relies on mortgages, closing that gap would remove one of the easiest routes to fraud. For borrowers, it would make their tax return the number that decides what they can borrow.

A copy can only prove it looks right

An underwriter reviewing a file compares documents against each other. Does the pay stub match the T4? Does the T4 line up with the NOA? Does the bank statement show deposits of roughly the right size? A careful forger makes all of these agree, and the file passes.

So the current process tests consistency. It can't test truth, because the only party that knows the truth isn't part of the conversation. A fraudulent application never has to get past the CRA. It only has to get past a person with a stack of papers and a deadline.

Inflated income does real damage once it reaches the stress test. Borrowers must qualify at the higher of their contract rate plus 2 percentage points or 5.25%. That rule exists to make sure a household can absorb a payment shock. If the income behind the calculation is invented, the safety margin is invented too, and the lender, the insurer and eventually the borrower carry a loan that was never affordable.

What a direct check changes for honest borrowers

A consent-based link would mean fewer tax documents emailed, photocopied and stored in inboxes, which lowers the exposure to identity theft for every applicant. It would also mean faster firm approvals, since the most time-consuming part of the file would be confirmed at the source.

Privacy concerns are legitimate. Any tool would have to meet strict federal standards and share data only for the specific loan being applied for. That design question deserves care. It doesn't justify keeping a system that relies on documents anyone can alter.

For self-employed borrowers, the effect is sharper. Some programs apply a 15% gross-up to self-employed qualifying income, but that gross-up starts from what you reported. If your accountant has written your taxable income down as far as it will go, a direct CRA check will show exactly that figure. Tax planning and borrowing plans have to be made together, ideally a year or two before you need the mortgage.

Bigger buildings raise the stakes

MPC is also asking Ottawa to extend mortgage insurance eligibility from properties of up to four units to properties of up to eight. That would open financing for the small apartment buildings Canada badly needs, and it would interest investors who already hold good equity.

It also raises the cost of weak verification. Larger loans mean more rental income in the qualifying calculation, where lenders typically count 50% to 80% of gross rents, and more room for overstated figures to hide. Buildings in the five-to-eight-unit range can also require more complex appraisals than a fourplex. Lending more against bigger buildings while still trusting editable PDFs would stack new risk on an old weakness. Neither proposal is guaranteed, and changes to CRA data sharing have historically moved slowly.

The useful question for any borrower doesn't depend on Ottawa's timeline. If a lender could call the CRA today, what income would it see, and is that the number your plans are built on?