The Mortgage Stress Test, Explained
By Tiffany Quaye · Last reviewed 2026-08-01
The short answer
The stress test requires you to qualify at the greater of your contract rate plus 2% or 5.25%. It applies to federally regulated lenders for purchases, refinances and lender switches, which means your approval amount is based on a higher rate than the one you'll actually pay.
How it changes your numbers
If your contract rate is 4.5%, you qualify at 6.5%. The payment used in your debt service ratios is therefore higher than your real payment, which reduces the mortgage amount you can be approved for — typically by a meaningful margin.
Where there's flexibility
- Provincially regulated credit unions are not bound by the federal test, though most apply their own version.
- Renewing with your existing lender generally doesn't trigger a new stress test.
- Reducing other monthly obligations improves your ratios directly — sometimes clearing one loan changes the entire file.
Questions people ask
Does the stress test apply to refinances?
Yes. Refinances with federally regulated lenders are qualified at the stress-test rate.
Do I have to pass the stress test to renew?
Not if you stay with your current lender at renewal. Switching lenders normally requires requalification.
Want this applied to your actual numbers?
Articles are general. Your file isn't. Bring your balances and your renewal date and I'll tell you what I'd do in your position.
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Not sure which option fits your situation?
Bring your numbers — mortgage balance, balances you're carrying, and what's stressing you out. I'll walk you through what's realistic, including when doing nothing is the better call.