If you've started shopping for a mortgage and heard your qualifying rate is higher than the rate you'll actually pay, that's not a mistake — it's the stress test, and it's federally mandated for anyone getting an insured mortgage in Canada, insured or not, at most regulated lenders.
What the stress test actually does
Lenders have to confirm you could still make your payments if rates were higher than the one you're signing for. The qualifying rate is the greater of your contract rate plus two percentage points, or a federally set minimum floor. You don't pay at that higher rate — you're only tested against it, to make sure a future rate increase (at renewal, for instance) wouldn't immediately break your budget.
Why it exists
Mortgage terms are typically much shorter than the amortization — you renew every few years at whatever rate is available then. The stress test is meant to prevent a scenario where a buyer qualifies at today's low rate, then can't afford the payment at a higher rate two or three years later.
What it means for your number
Practically, it means your maximum qualifying mortgage is smaller than a simple "can I afford this payment today" calculation would suggest. That's frustrating in a competitive market, but it's also the reason a lot of Canadian homeowners went into renewal season with rate increases already priced into their original budget.
Our Affordability calculator applies the same stress-test logic lenders use, so the maximum home price it shows you is a realistic one — not an optimistic one.