Mortgage stress test (Canada)
Canada's stress test requires qualifying at your contract rate plus 2% — or 5.25%, whichever is higher. Here is how it works and how much it reduces borrowing power.
Canada's mortgage stress test is a federal rule that forces lenders to check whether you can afford your mortgage at a higher rate than the one you will actually pay. The lender qualifies you on the stress-test payment — not your real payment. This means you may be approved for less than you might expect.
The stress-test rate is the higher of your contract rate + 2% or the OSFI benchmark rate of 5.25%. At most current rates the +2% rule applies.
Real number examples
Example 1 — $500,000 mortgage at 5.00% contract rate
Contract payment (Canadian semi-annual compounding, 25 years): $2,908/month. Stress-test rate: 5.00% + 2.00% = 7.00%. Stress-test payment: $3,502/month. The payment the lender evaluates your income against is $594/month higher than what you will actually pay.
Example 2 — How much does the stress test cut borrowing power?
Household gross income: $150,000/year. Using a 32% Gross Debt Service ratio as the qualifying ceiling, maximum monthly housing cost = $150,000 × 0.32 ÷ 12 = $4,000.
At the actual contract rate of 5.00%, $4,000/month qualifies you for a mortgage of approximately $688,000. Stress-tested at 7.00%, the same $4,000/month qualifies you for only about $577,000 — a reduction of roughly $111,000, or 16%.
Example 3 — When the 5.25% floor kicks in
If rates fall and your contract rate is 3.00%, the stress-test rate would be the higher of 3.00% + 2.00% = 5.00% or the 5.25% benchmark — so the benchmark applies at 5.25%. The floor prevents the stress test from becoming meaningless when rates are very low.
The stress-test rate formula
Frequently asked questions
Why does Canada have a stress test?
Canada introduced the mortgage stress test to ensure borrowers can still afford their mortgage if interest rates rise significantly after their term expires. The Office of the Superintendent of Financial Institutions (OSFI) implemented it nationwide in 2018 following earlier variants for insured mortgages. The goal is to prevent a scenario where mass defaults occur when short mortgage terms renew at higher rates — a realistic risk given Canada's typical 5-year terms.
How does the stress test affect how much I can borrow?
It directly caps your maximum loan. Instead of qualifying on your contract payment, lenders use the stress-test payment — which can be 20–25% higher. This shrinks the loan you qualify for by roughly the same percentage. Example: if your income supports a $560,000 mortgage at your contract rate of 5.0%, the stress test at 7.0% might limit you to $460,000. The higher the gap between contract rate and stress-test rate, the larger the impact.
What is the current stress test rate?
As of 2026, the stress test rate is the higher of your contract rate + 2% or the Bank of Canada benchmark rate of 5.25%. Because most contract rates in recent years have exceeded 3.25%, the contract rate + 2% rule typically applies — meaning a 5.25% contract rate would be stress-tested at 7.25%. The 5.25% floor matters most when rates fall below 3.25%. OSFI reviews the benchmark periodically and can change it.
Does the stress test apply to renewals?
It depends. As of 2024, OSFI clarified that uninsured mortgages switching lenders at renewal must pass the stress test, but straight renewals with the same lender do not require re-qualification in most cases. Insured mortgages (those with CMHC/Sagen/Canada Guaranty) do require stress-test qualification when switching lenders at renewal. This asymmetry gives existing borrowers a retention incentive to stay with their current lender — which is itself a policy concern.
Is there a stress test in the US?
Not in the same formalized way. US lenders use debt-to-income ratios and stress scenarios internally, but there is no federal rule requiring qualification at a rate above the contract rate. The equivalent protection in the US is the long fixed-rate culture: most American mortgages lock the rate for 15 or 30 years, eliminating renewal risk entirely. Canada's shorter terms make renewal risk real, which is why the stress test exists.
See your stress-test qualifying payment
The Canadian calculator shows both your actual payment and the stress-test equivalent side by side.
Related terms: Mortgage term (Canada vs US) · Principal vs interest · Loan-to-value (LTV)