The mortgage stress test, explained in plain English

What it actually is

Every federally regulated lender in Canada has to qualify you at whichever is higher: your contract rate plus 2%, or 5.25%. That number, called the qualifying rate, is not the rate you'll actually pay. It's a stricter bar used purely to calculate how much you're allowed to borrow, built so that a future rate increase or renewal at a worse rate doesn't blow up your budget.

Why it exists

It was brought in after the federal government watched household debt climb and wanted a buffer built into the system. The logic is reasonable even when it's frustrating: if rates rise by the time you renew, you should still be able to afford the payment. Whether you agree with the policy or not, every lender has to apply it, so there's no shopping your way around it.

How it actually changes your number

Say you're approved for a rate of 4.5%. Your lender still checks your affordability as though you were paying 6.5% (4.5% plus 2%, since that's higher than the 5.25% floor). That gap between your real rate and your qualifying rate is what shrinks your approved amount compared to what you might expect just from your income alone.

What actually helps you qualify for more

Paying down other debt (car loans, credit cards) has an outsized effect, since it directly lowers what lenders call your debt service ratios. A larger down payment reduces how much you need to borrow in the first place. And a longer amortization spreads payments out, which can bring the qualifying number down even though it means paying more interest over time. We usually run two or three combinations before we tell a client their real number.