Glossary
Qualifying Rate
The higher interest rate a lender must use to test whether you can afford a mortgage, rather than the rate you actually pay..
A qualifying rate is the interest rate a lender must use to test whether you can afford a mortgage, rather than the contract rate you would actually pay. Under Canada's federal mortgage stress test, lenders must confirm you could still carry the payments if rates rose, so they calculate your GDS and TDS ratios using this higher rate.
How the qualifying rate is set
For most mortgages the qualifying rate is the greater of two figures: your contract rate plus a buffer (commonly two percentage points), or a minimum floor rate published by the regulator. A lender uses whichever is higher, so a very low contract rate does not always lower your qualifying rate. The rule comes from OSFI Guideline B-20, which governs federally regulated lenders, and comparable expectations apply to insured mortgages. Because the figure changes when the floor or your contract rate changes, confirm the current number with your lender or on the OSFI website rather than relying on older figures.
Why the qualifying rate matters
Your qualifying rate, not your contract rate, decides how much you can borrow. A higher qualifying rate reduces the payment you can afford, which lowers the mortgage amount a lender will approve. Two borrowers with identical incomes and down payments can qualify for very different loan amounts if they are tested at different rates. The qualifying rate also affects pre-approval: a rate hold may lock your contract rate, but the stress test still applies when the file is underwritten.
- Contract rate: the rate used to calculate your actual payments.
- Qualifying rate: the higher rate used only for the affordability test.
- Result: your real payment may be lower than the payment the lender verifies you could handle.
For illustration only, adding a two-point buffer to a modest contract rate can push the tested rate noticeably higher, which increases the payment the lender must see you carrying.
What borrowers can look at
Because the test runs on the qualifying rate, reducing debt or strengthening verified income can matter as much as shopping for a slightly lower contract rate. Paying down balances, adding a co-signer, or increasing a down payment can improve the ratios. Use a stress test calculator to see the effect on your numbers, and read the guide on the Canadian mortgage stress test for the full process.
Frequently asked questions
What is the qualifying rate in Canada?
It is the higher interest rate a lender uses to check whether you can afford mortgage payments. Under the federal stress test, lenders test you at the greater of your contract rate plus a buffer (commonly two percentage points) or a published floor rate. It is used only for qualification, not to set your actual payments.
Is the qualifying rate the same as my mortgage rate?
No. Your contract rate sets your actual payment. The qualifying rate is a separate, higher figure used only for the affordability test. That means you may be approved for a payment lower than the payment the lender verified you could handle if rates rose. Your mortgage documents should show both rates.
Does the stress test apply when I renew my mortgage?
Renewing with your existing lender typically does not require re-qualifying under the stress test, while switching to a different lender is generally subject to it. Rules differ between insured and uninsured mortgages and between lenders, so confirm your situation with your lender or check OSFI's guidance.
Sources
Related terms
- Mortgage Stress Test — The federal mortgage stress test is a qualification rule that makes lenders check whether you could afford your mortgage if rates were higher than your contract rate.
- Mortgage Pre-Approval — A mortgage pre-approval is a lender's conditional commitment to lend a set amount at a held rate, subject to verifying your income, debts and the property.
- Total Debt Service Ratio (TDS) — The Total Debt Service Ratio (TDS) is the share of gross income that goes toward all debt payments, capped at 44% by most Canadian lenders.
- Mortgage Default Insurance — Insurance that protects the lender, not the borrower, when a high-ratio mortgage goes into default and the home sale does not repay the debt.