Mortgage Stress Test After the October 2026 Hike: Who Loses Borrowing Power

The Bank of Canada raised its policy rate to 2.50% on October 28, 2026. For a buyer, the real question is not just the payment but how much a lender will approve. Our article on the mortgage qualifying rate and what the Bank of Canada does not set laid out the qualification rule. This one applies it to the October hike: who loses borrowing power, when the 5.25% floor cancels the effect, and why switching lenders at renewal is still on the table.

The rule in one line

To get a mortgage from a federally regulated lender, you have to show you could handle payments at a rate higher than your contract rate. That qualifying rate, which the Office of the Superintendent of Financial Institutions (OSFI) calls the minimum qualifying rate, is the greater of 5.25% or your contract rate plus 2 percentage points.

For uninsured mortgages, the rule comes from OSFI's Guideline B-20. For insured mortgages (less than 20% down), the federal government has applied the same calculation since June 1, 2021. Either way, lenders run your debt service ratios on a notional payment at that rate, not on the payment you will actually make.

A Quebec-specific note: Guideline B-20 covers federally regulated institutions. If you are borrowing uninsured from a provincially regulated lender, such as a caisse, ask which qualifying rate it uses.

The threshold that decides everything: 3.25%

The formula has two branches, and only one applies at a time. The switch point is a contract rate of 3.25%, since 3.25% plus 2 points equals exactly 5.25%.

• Contract rate below 3.25%: the 5.25% floor wins. A higher contract rate, as long as it stays below that line, does not change your qualifying rate.
• Contract rate above 3.25%: contract rate plus 2 points applies. Every increase in your contract rate passes straight through to your qualifying rate.

So after the October 28, 2026 hike, the question is which side of that line your offered rate sits on, and whether that rate actually moved.

Variable mortgages: the hike flows into your qualification

A variable rate is quoted against prime, and prime followed the policy rate up: at National Bank it went from 4.45% to 4.70% on October 29, 2026. A variable offer at prime minus 0.50 therefore went from 3.95% to 4.20%.

Both rates are above 3.25%, so the qualifying rate rises from 5.95% to 6.20%. Here is what that does in an illustrative example. Assume your income and other debts allow, under the lender's ratios, a maximum mortgage payment of $2,500 a month at the qualifying rate, over 25 years with semi-annual compounding.

• Qualifying at 5.95%: maximum loan of about $392,600.
• Qualifying at 6.20%: maximum loan of about $383,600.
• Difference: about $9,000 less borrowing power on the same income.

For the floor to absorb the hike on a variable mortgage, the contract rate would have to be below 3.25%, which with prime at 4.70% means a discount of more than 1.45 points. Otherwise, every prime increase trims the borrowing power of a buyer shopping for a variable.

When the 5.25% floor cancels out a hike

The floor only cushions a hike when the contract rate stays below 3.25% both before and after. In our example, a contract rate going from 2.95% to 3.20% would leave the qualifying rate at 5.25% in both cases, and the maximum loan would stay at about $419,500.

The in-between case is worth knowing too. A contract rate that crosses the line, say from 3.25% to 3.50%, moves qualification from 5.25% to 5.50%. In the same illustrative example, the maximum loan drops from about $419,500 to about $409,600. Once you are above the threshold, the full increase passes through.

The takeaway for a variable-rate buyer is simple: in today's market, the floor is not protecting you. With prime at 4.70%, almost every variable offer sits above the 3.25% line, so the qualification test now moves in step with the Bank of Canada, 25 basis points at a time.

Fixed mortgages: no mechanical link to the policy rate

The logic is identical for a fixed mortgage, but the starting point is different. A fixed contract rate does not follow the policy rate; it mostly tracks bond yields of similar maturity. The October 28 hike therefore does not automatically change your qualifying rate if you are going fixed.

What matters is the rate actually on offer the day your application is assessed. Quebec's real estate board, the QPAREB, noted on October 14, 2026 that fixed rates rose in the spring and early fall and that affordability is deteriorating, especially for first-time buyers. If the fixed rate you are quoted has gone up, your qualifying rate went up with it, whatever the Bank of Canada decided.

Renewals: switching lenders without requalifying

Good news for owners coming up for renewal: since November 21, 2024, OSFI no longer expects lenders to apply the minimum qualifying rate when a borrower moves an uninsured mortgage to another federally regulated lender at renewal, as long as neither the loan amount nor the amortization period increases. For insured mortgages, the federal government stated in December 2023 that borrowers are not required to requalify when they switch lenders at renewal.

So the hike does not lock you in with your current lender. But if you use the switch to borrow more or extend your amortization, qualification applies again at current rates. The new lender can also still apply its own risk criteria, so get the terms confirmed in writing.

What to do before December 9

The Bank of Canada said there could be a need to raise its rate further, carefully, taking decisions one at a time. Its next announcement is set for Wednesday, December 9, 2026.

• Ask your lender for today's contract rate, both variable and fixed, and add 2 points to see your qualifying rate in each case.
• If you are leaning variable, rerun the numbers with prime 0.25 point higher: that is the borrowing power you would lose with another hike.
• If your term is ending, compare offers from other lenders without changing the amount or amortization.
• Set your purchase budget on the payment you can carry, not on the maximum approved amount.