Understanding the Canadian Mortgage Stress Test

The Canadian Mortgage Stress Test, also known as the B-20 Guideline, is a financial safeguard implemented by the Office of the Superintendent of Financial Institutions (OSFI). It’s designed to ensure that borrowers can afford their mortgage payments even if interest rates increase. This test applies to all federally regulated financial institutions and is a critical part of the mortgage approval process in Canada.

The Purpose of the Stress Test

The primary purpose of the stress test is to protect consumers and the broader financial system from the potential risks associated with increased interest rates. By requiring borrowers to qualify at a higher interest rate, the stress test ensures that borrowers have a buffer in their budget to accommodate potential increases in their mortgage payments. This is particularly important in a volatile economic environment where interest rates can fluctuate.

Who Needs to Take the Stress Test?

The stress test applies to all borrowers who are seeking a mortgage from a federally regulated financial institution. This includes first-time homebuyers, existing homeowners looking to refinance, renew or transfer their mortgage to another lender. Regardless of the size of your down payment or the type of mortgage you’re applying for, you’ll need to pass the stress test to secure a mortgage.

Key Terms You Should Know

Interest Rate

The interest rate is a crucial term in the mortgage process. It’s the cost of borrowing money from a lender, expressed as a percentage of the loan amount. The interest rate directly impacts the size of your monthly mortgage payments. In Canada, mortgage interest rates can be either fixed, meaning they remain constant over the term of the mortgage, or variable, meaning they fluctuate based on changes in the lender’s prime rate.

Benchmark Rate

The benchmark rate, also known as the Bank of Canada’s five-year benchmark rate, is another key term in the mortgage process. It’s used in the mortgage stress test to assess a borrower’s financial stability. The benchmark rate serves as a standard rate for financial institutions to compare against when conducting the stress test.

Qualifying Rate

The qualifying rate is the interest rate used in the mortgage stress test to determine whether a borrower can afford their mortgage payments. The qualifying rate is either the borrower’s contract rate plus 2% or the benchmark rate, whichever is higher. This ensures that borrowers can still afford their mortgage payments if interest rates rise in the future.

Contract Rate

The contract rate is the interest rate agreed upon by the borrower and the lender in the mortgage contract. This is the rate that your mortgage payments are actually based on. It’s important to note that while your contract rate may be lower than the qualifying rate used in the stress test, you must still prove that you can afford payments at the higher qualifying rate.

Implications for Homebuyers

How the Stress Test Affects Your Mortgage Eligibility

For homebuyers, the stress test means that they may qualify for a smaller mortgage than they would have before the test was introduced. This can impact the price range of homes that potential buyers can realistically consider.

The Mortgage Stress Test plays a significant role in determining your mortgage eligibility. It’s designed to ensure that you can afford your mortgage payments even if interest rates increase in the future. This means that even if you secure a mortgage with a low interest rate, you need to prove that you could still make your payments if rates were to rise significantly.

Strategies for Passing the Stress Test

There are several strategies that homebuyers can employ to improve their chances of passing the stress test. These include increasing your down payment, reducing your other debts, or choosing a longer amortization period (only available on uninsured mortgages). Each strategy has its pros and cons, and what works best will depend on your specific circumstances. It’s always a good idea to consult with a mortgage professional to understand all the options and strategies available to you. They can provide personalized advice based on your financial situation and home financing goals.

Exceptions to the Canadian Mortgage Stress Test

Renewing Your Mortgage with the Same Lender

One of the exceptions to the Canadian Mortgage Stress Test applies when you are renewing your mortgage with the same lender. If you are a borrower who is renewing your mortgage with your current lender, you are not required to pass the stress test. This is because you have already been assessed by your lender when you first applied for your mortgage, and your payment history is known to them.

Applying Through Unregulated Lenders

Another exception to the stress test is when you apply for a mortgage through an unregulated lender. Unregulated lenders are not federally regulated and therefore are not required to use the stress test. These lenders typically cater to homebuyers who are unable to qualify for a mortgage from traditional lenders due to factors such as a low credit score or unstable income. While these lenders can provide an alternative route to homeownership, it’s important to be aware that they often charge higher interest rates compared to traditional lenders.

Recent Developments in the Canadian Mortgage Stress Test

Changes in the Stress Test in 2023

In 2023, a significant update was made to the Mortgage Stress Test in Canada. The Office of the Superintendent of Financial Institutions (OSFI) announced that insured borrowers are exempt from the re-application of the Mortgage Qualifying Rate (MQR) when switching lenders at renewal. This change was made because the borrower’s credit risk has been transferred for the life of the loan to the mortgage insurer.

This exemption does not apply to uninsured borrowers, who will still need to be re-stress tested when switching lenders at renewal. This means that if you have an uninsured mortgage and you want to switch lenders at renewal, you will need to prove again that you can afford your mortgage payments at the higher of the benchmark rate or your contractual rate plus 2%. This continues to place a higher burden on uninsured borrowers, who will need to prove their ability to afford potentially higher mortgage payments.

Implications of the 2023 Changes

The 2023 changes to the stress test have significant implications for insured borrowers. By exempting these borrowers from the re-application of the MQR when switching lenders at renewal, the OSFI has provided more flexibility for these borrowers when it comes to renewing their mortgages. This change can potentially make it easier for insured borrowers to take advantage of competitive rates offered by different lenders at the time of renewal.

Current State of the Stress Test in 2024

In 2024, the OSFI maintained the MQR for the stress test at 5.25% or the borrower’s contract rate plus 2%, whichever is higher. This decision was made after a period of consultation and feedback from industry stakeholders. The OSFI’s decision to keep the MQR unchanged was influenced by the need to ensure that borrowers can still afford their mortgage payments in a potentially riskier borrowing environment. This decision underscores the OSFI’s commitment to maintaining the stability of the Canadian housing market and protecting consumers from potential financial hardship caused by rising interest rates.


The Mortgage Stress Test is a significant part of the mortgage application process in Canada. It’s designed to ensure that borrowers can afford their mortgage payments under higher interest rates, protecting both the borrower and the broader financial system. By understanding how it works, both homebuyers and existing homeowners can better navigate the home financing process. It’s always best to consult with a mortgage broker for the most accurate and current information.

If you need guidance on the Canadian Mortgage Stress Test or other mortgage-related information, consider reaching out to TheBroker.ca Ltd for a free consultation. We offer helpful advice on getting a mortgage, as well as the current mortgage rates. Feel free to reach out to TheBroker.ca Ltd. via our website or call us directly at (519) 252-9665. Remember, the right advice can be the key to successfully managing all aspects of your mortgage process.

Please note that this information is current as of the time of writing and is intended for general informational purposes only. It should not be relied upon as financial advice. Always consult with a mortgage professional for advice tailored to your specific circumstances.

This article was brought to you by TheBroker.ca Ltd., a licensed mortgage brokerage. Our licensing status with the Financial Services Regulatory Authority of Ontario (FSRA) can be confirmed through this link.

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