No. Renewing with your current lender has never required the stress test. And since November 21, 2024, neither does switching to a new one. Provided your balance and amortization stay the same. The test still applies when you buy a home or refinance: you qualify at your contract rate plus 2%, or 5.25%, whichever is higher.
Renewals — where the rules changed
Here’s where most of the confusion lives, and where the answer got better recently.
If you’re staying with your existing lender at renewal, no stress test. That’s been true all along — you’ve already got the loan, and they’re not re-underwriting you to keep it.
If you’re switching lenders at renewal, there’s also no stress test anymore — provided it’s a straight switch, meaning your loan amount and your remaining amortization stay the same. The Office of the Superintendent of Financial Institutions (OSFI) dropped the requirement effective November 21, 2024. Before that, an uninsured borrower who wanted to move to a cheaper lender at renewal had to requalify at the stress-tested rate, while a borrower staying put did not. (Insured mortgages — the under-20%-down kind — had already been freed up in January 2024.)
That old rule had a quiet cost. Borrowers who couldn’t pass the test at requalification were stuck with whatever their existing lender offered — and lenders knew it. Renewal offers to captive customers weren’t the sharpest. Removing the test restored your ability to walk, which is the only negotiating leverage a renewing borrower really has.
Two caveats before you take that and run. The new lender still underwrites you — they’ll look at your income, your debts, and your payment history, because it’s still their money. There’s just no artificial rate floor in the math. And if you want to change the loan — pull out equity, extend the amortization, consolidate debt into the mortgage — that’s not a straight switch, it’s a refinance, and the full stress test applies again.
What the stress test actually is
When you apply for a mortgage, the lender runs your debt ratios — the GDS and TDS math that determines how much you can borrow. The stress test sets the interest rate used in that math. Instead of your offered rate, the lender tests your finances at the higher of your contract rate plus 2%, or the 5.25% floor.
So if your lender offers you 4.5%, you’re qualified as though the rate were 6.5%. If someone offered you 3%, you’d still be tested at 5.25%, because the floor wins.
The rule exists for one reason: to make sure you can still carry the payments if rates rise before your term is up. Anyone who took a 1.5% variable in 2021 and renewed near 6% understands exactly why the regulator wants that cushion. It’s an annoying rule that turned out to be a correct one — I don’t have many of those to defend, so I’ll defend this one.
What it costs you in buying power
The stress test trims roughly 15 to 20% off what you could borrow at your contract rate. In practical terms: a household that could carry a $500,000 mortgage at 4.5% qualifies for something closer to $410,000 once tested at 6.5%.
That gap surprises people because the online calculators mostly show the contract-rate number. The lender’s letter shows the tested number. If you’re planning your search around the calculator, you’re shopping one price bracket too high — get pre-approved first and plan around the letter instead.
Worth knowing: the stress test also applies to investment property mortgages, and the same qualifying math is used whether the property is a home or a fourplex.
What this means in practice
Buying: budget from the tested number, not the contract rate. Ask your lender or broker to show you both — the difference is your cushion, and it’s clarifying to see what the regulator thinks you should be able to absorb.
Renewing: shop it. Every time. You have a window, usually starting four to six months before your term ends, when other lenders can compete for your mortgage without the stress test in the way. The difference between a captive renewal rate and a competed one can be a few tenths of a percent — on a $400,000 balance, that’s real money every single month of a five-year term. I’ve seen people spend a weekend researching a $900 barbecue and twenty minutes on a renewal worth thirty times that.
That math matters more here than people expect. A West Kootenay balance is smaller than a Lower Mainland one, but so is the income carrying it — the percentage that gets freed up is the same either way. If you’re weighing a renewal against selling, here’s what the Trail market looks like right now.
One more from the numbers side of things: if a renewal is coming and your income situation has changed — new self-employment, parental leave, a job change inside the probation period — talk to a broker early. Staying with your current lender requires no requalification at all, which can make a badly timed renewal the one moment when not shopping is the right call. It depends on the file, and it’s exactly the kind of thing a 15-minute conversation sorts out.
Stress test questions, answered
What is the mortgage stress test in Canada?
It’s a qualification rule applied when you get a new mortgage. Your lender doesn’t qualify you at your actual rate — they test your finances at the higher of your contract rate plus 2%, or 5.25%. It ensures you could still carry the payments if rates rise during your term.
Do I have to pass the stress test when I renew my mortgage?
No. A straight renewal with your existing lender has never triggered the stress test. Switching lenders at renewal no longer does either — insured mortgages were exempted in early 2024, uninsured ones on November 21, 2024 — as long as your loan amount and amortization stay the same.
How much does the stress test reduce what I can borrow?
Roughly 15 to 20% compared with qualifying at your contract rate, depending on your debts and the rate itself. A household that could carry a $500,000 mortgage at its offered rate qualifies for something closer to $410,000 once the test is applied.
How does the stress test work if I switch lenders at renewal?
For a straight switch — same balance, same remaining amortization — there is no stress test. OSFI removed the requirement for uninsured mortgages effective November 21, 2024; insured mortgages had been exempt since earlier that year. The new lender still reviews your income, debts, and payment history, but no minimum qualifying rate applies. A refinance is different: change the loan and the full test returns.
Does the mortgage stress test apply if I refinance?
Yes. A refinance counts as a new mortgage, even with your current lender. Pull equity out, add to the balance, stretch the amortization, or roll other debts into the loan, and you qualify at the higher of your contract rate plus 2%, or 5.25%. Change nothing but the term and rate at renewal and there’s no test; change the loan itself and the full rules apply.
Does the stress test apply to investment property mortgages?
Yes. New mortgages on investment properties are qualified the same way — at the greater of your contract rate plus 2% or 5.25% — on top of the larger down payment (minimum 20%) those properties require.
