The head of Canada’s banking regulator has confirmed that mortgage lenders across the country want the mortgage stress test to remain in place. Despite occasional calls from industry groups and borrowers to loosen or scrap the qualification rule, lenders themselves see it as a critical tool for managing risk and protecting financial stability.

What the OSFI Boss Said

The Superintendent of the Office of the Superintendent of Financial Institutions (OSFI) stated publicly that Canadian lenders have expressed strong support for keeping the mortgage stress test as part of the B-20 guideline. The stress test, which has been in effect since 2018, requires all uninsured mortgage borrowers to qualify at either their contract rate plus 2 percentage points, or at a minimum qualifying rate (currently 5.25 per cent as of October 2026), whichever is higher. Insured mortgages (those with less than 20 per cent down and backed by CMHC insurance) must also meet the same qualifying standard.

According to OSFI, lenders view the stress test as a safeguard that ensures borrowers can continue to afford their mortgage payments if interest rates rise during the mortgage term or at renewal time.

Why Lenders Support the Stress Test

Lenders favour the stress test for several reasons. First, it reduces the risk of default. By qualifying borrowers at a rate higher than their actual mortgage rate, the stress test creates a buffer. If the borrower has a variable-rate mortgage and the policy rate rises, or if they renew into a higher rate at the end of their term, they are more likely to handle the increased payments without falling into arrears.

Second, the stress test promotes financial system stability, a principle covered in foundational finance texts such as Principles of Finance. When fewer borrowers default, the banking system remains more resilient during economic downturns or rate-hike cycles. This protects not only individual lenders but the broader Canadian housing market and economy.

Third, lenders recognize that removing or weakening the stress test could lead to a surge in highly leveraged borrowing, which would inflate home prices further and put buyers at greater risk of payment shock down the line.

What This Means for Borrowers

For Canadian homebuyers and those looking to refinance, the message is clear: the mortgage stress test is not going anywhere. You will still need to prove you can afford mortgage payments calculated at the higher qualifying rate, even if your actual rate is lower.

Read also: Canada’s Mortgage Stress Test: What Borrowers Need to Know

In practice, this means your maximum borrowing amount is constrained. For example, if you earn C$100,000 per year and are approved for a mortgage at a contract rate of 4.5 per cent, the lender will qualify you at 6.5 per cent (contract rate plus 2 percentage points) or 5.25 per cent, whichever is higher. In this case, 6.5 per cent applies, which reduces the loan amount you can qualify for compared to a scenario with no stress test.

However, the stress test also protects you. If rates climb after you take out your mortgage, or if you renew at a higher rate in three or five years, you are less likely to face severe financial strain. The qualifying buffer gives you room to absorb rate increases without defaulting.

What Comes Next

OSFI reviews the B-20 guideline and the minimum qualifying rate periodically, adjusting the benchmark as needed to reflect market conditions. While the Superintendent’s comments signal that the stress test structure will remain, the specific qualifying rate could shift if the Bank of Canada’s policy rate moves significantly or if economic conditions change.

If you are planning to buy a home or refinance in the near term, work with a licensed mortgage broker to understand how the stress test affects your borrowing power. Use an OSFI mortgage stress test calculator to estimate your maximum loan amount under the current rules, and factor in potential rate increases when deciding how much mortgage debt to take on.

Important: Mortgage qualification rules, rates, and stress test benchmarks are subject to change and vary by lender, province, and your personal financial situation. This article provides general educational information only and is not personalized financial, lending, legal, or tax advice. Consult a licensed mortgage professional or the Financial Consumer Agency of Canada for guidance specific to your circumstances. Rates and rules are current as of October 2026.