The mortgage stress test in Canada (2026): the qualifying rate, the math and how to pass it
How does the mortgage stress test work in 2026? Here's the qualifying rate lenders must use, where it applies, a worked example of what it does to how much you can borrow, and practical ways to pass it.
The mortgage stress test makes lenders check that you could still pay your mortgage at a higher rate. For uninsured mortgages, OSFI's minimum qualifying rate is the greater of your contract rate plus 2% or 5.25%, and CMHC-insured mortgages are assessed at the same rate with limits of 39% for housing costs and 44% for total debt. It applies to purchases, refinances and HELOCs at federally regulated lenders, but not to an uninsured straight switch at renewal. In the worked example, a 4.50% contract rate is tested at 6.50%, which raises the income needed by roughly $18,000 a year. OAC.
Key takeaways
- →OSFI's minimum qualifying rate for uninsured mortgages is the greater of your contract rate plus 2% or 5.25%, and OSFI reviews it at least annually.
- →CMHC-insured mortgages are assessed at the same qualifying rate, with limits of 39% for housing costs (GDS) and 44% for total debt (TDS).
- →The test applies to purchases, refinances and HELOCs at federally regulated lenders; an uninsured straight switch at renewal is exempt.
- →In the example, a $500,000 mortgage at 4.50% is tested at 6.50%, so the household needs about $120,000 a year instead of about $102,000.
- →Lowering debts, adding documented income, borrowing less or comparing lenders can help; a licensed agent can run your numbers across 65+ lenders, OAC.
Short answer: The mortgage stress test in Canada means a lender has to check that you could still afford your payments at a higher rate than the one you've been offered. For uninsured mortgages, OSFI sets the minimum qualifying rate at the greater of your contract rate plus 2% or 5.25% [1]. For CMHC-insured mortgages, your debt ratios, capped at 39% for housing costs and 44% for total debt, are also calculated at the greater of your contract rate plus 2 points or 5.25% [3]. A straight switch of an uninsured mortgage at renewal is exempt [1].
This guide is for buyers, owners refinancing and anyone switching lenders who wants to know how the test works in 2026 and how to pass it. It's general information; each lender applies its own policy within the rules, OAC.
What the stress test is, and why it exists
OSFI calls the minimum qualifying rate (MQR) a mortgage stress test that federally regulated lenders must apply to borrowers. It's meant to help borrowers keep paying if they face a drop in income, higher household costs or higher interest rates [1]. The qualifying rate has two parts [1]:
- The buffer: currently 2 percentage points above your contract rate.
- The floor: currently 5.25%, which applies when your contract rate plus the buffer would be lower.
OSFI reviews both at least annually [1]. The rule applies to most newly underwritten residential mortgages under Guideline B-20 [1][2]. FCAC also notes that the stress test applies to refinances and HELOCs at federally regulated lenders [4].
Where the stress test applies
| Situation | Stress test? |
|---|---|
| New purchase, insured or uninsured, at a federally regulated lender | Yes [1][3] |
| Refinance or HELOC at a federally regulated lender | Yes [4] |
| Uninsured straight switch at renewal (new federally regulated lender, no increase in loan amount or amortization) | No [1] |
| Switch with a higher amount or longer amortization | Yes: treated like a new application [1] |
| Provincially regulated or other lenders | Depends on the lender's own policy; ask |
For the detail on switching, see our guide to switching mortgages and the stress test.
How the test works: a worked example
Example (illustrative): you're buying with a $500,000 mortgage, a 25-year amortization and a contract rate of 4.50%. Property tax is $400 a month and heating is $150. These figures are assumptions. We use CMHC's 39% limit for housing costs (GDS) as the yardstick [3], and semi-annual compounding for the payments.
| Step | Rate used | Mortgage payment | Housing costs with tax and heat |
|---|---|---|---|
| Your actual payment | 4.50% | about $2,767 a month | about $3,317 |
| Payment the lender must test | 6.50% (4.50% + 2%, which is higher than the 5.25% floor) | about $3,349 a month | about $3,899 |
To keep $3,899 at or below 39% of income, the household needs about $10,000 a month, or roughly $120,000 a year. Without the test, the same $3,317 would need about $102,000 a year. In other words, the test asks for roughly $18,000 more income in this example. Put the other way, at a $120,000 household income the test limits this borrower to about a $500,000 mortgage, while the actual 4.50% rate on its own would suggest about $605,000. Those are simplified figures: lenders also count other debts (the 44% total debt service limit for insured mortgages [3]) and apply their own policies.
Want to know how much you'd qualify for? Try our mortgage affordability calculator or ask a licensed 8Twelve agent to run it across 65+ lenders, OAC.
When the floor matters
The floor kicks in when your contract rate is low. If your contract rate is 3.00%, adding 2% gives 5.00%, which is below the floor, so you'd be tested at 5.25%. On a $500,000, 25-year mortgage the test payment at 5.25% is about $2,980 a month, compared with about $2,366 at 3.00%. When the contract rate is above 3.25%, the buffer sets the qualifying rate.
How to improve your odds of passing
- Pay down or close debts you don't need. Lower monthly obligations raise your ratios' headroom. Our GDS and TDS guide shows what counts.
- Add income you can document. A co-borrower with stable, verifiable income can help.
- Increase your down payment or reduce the amount you need. A smaller mortgage means a smaller test payment.
- Choose a lower purchase price or a different property. It changes both the payment and the property tax.
- Compare lenders. Policies vary on income types and debts, so a different lender may count more of your income.
If you don't pass
- Wait and rebuild. Paying down debt or adding income can change the answer in a few months.
- Look at lenders with different policies. In our experience, some provincially regulated and alternative lenders don't apply the federal test in the same way, but their rates and fees are often higher. Treat that as a bridge, with an exit plan, not a long-term default.
- Keep your current mortgage. At renewal, an uninsured straight switch doesn't require the test [1], and renewing with your current lender is another route; see our renewal guide.
The mortgage stress test isn't a prediction that your rate will rise; it's a safety margin. Know the qualifying rate, run your numbers at it, and fix the debts and documents that move it. If you're refinancing, our refinance requirements guide covers the rest.
This article is for general information only and isn't financial, legal or tax advice. Rates, products and terms change without notice and are available on approved credit (OAC). The rate and terms you qualify for depend on your individual financial situation, including credit, income, property and loan-to-value. "Best rates" means the most suitable options available for your situation, not a guarantee of the lowest rate. Examples are for illustration only, as of November 13, 2026, and are not an offer. 8Twelve Mortgage arranges mortgages through 65+ lenders and does not lend directly. Licensed across Canada — see our licences.
The minimum qualifying rate (the greater of the contract rate plus 2% or 5.25%) and CMHC's 39% and 44% limits were checked on OSFI and CMHC pages on November 13, 2026, and can change; OSFI reviews the rate at least annually. The example uses assumed amounts and semi-annual compounding, and lender practices described reflect our experience and vary by lender.
Frequently asked questions
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Last reviewed on November 14, 2026