CostThe stress test requires lenders to qualify you at the higher of your contract rate plus 2%, or 5.25% — whichever is greater. It's designed to confirm you could still afford payments if rates rise, and it's the main reason your approved amount is often lower than your contract rate alone would suggest.
What the stress test actually requires
OSFI (the Office of the Superintendent of Financial Institutions), Canada's federal banking regulator, requires federally regulated lenders to qualify every mortgage applicant at the higher of two numbers: your actual contract rate plus 2 percentage points, or a fixed floor of 5.25%. As of September 2026, with typical contract rates in the mid-4% range, that floor of 5.25% is usually the binding number for most buyers, since contract rate plus 2% would work out lower.
Why the stress test exists
It was introduced in 2018 in response to a period of very low rates, specifically to prevent buyers from qualifying for a mortgage they could only afford at that moment's ultra-low rate and then being unable to handle a renewal at a higher one years later. It applies to both insured mortgages (under 20% down) and uninsured mortgages (20% or more down) at federally regulated lenders — credit unions in some provinces aren't bound by the same federal rule, which is one reason their qualifying numbers can occasionally differ slightly.
A worked example
Household with $120,000 income, 4.99% contract rate
| Contract rate + 2% | 6.99% |
| Fixed floor | 5.25% |
| Rate actually used to qualify | 6.99% |
In this case the "plus 2%" rule is actually the higher of the two and becomes the binding qualifying rate — a reminder that at higher contract rates, the stress test can bite harder than the 5.25% floor most people have heard about. The affordability calculator runs both numbers automatically and shows you which one applies to your situation.
Can you avoid the stress test?
Generally, no — it applies across federally regulated banks regardless of your down payment size or credit score. Some credit unions and provincially regulated lenders aren't bound by OSFI's rule and may qualify you differently, though they often apply their own, similar internal cushion for the same risk-management reasons. Private lenders sit outside this system entirely but typically come with meaningfully higher rates and fees, which usually erodes any apparent qualifying advantage.
See exactly how the stress test affects your own maximum with the affordability calculator, or check what a specific home price and rate would mean for your monthly payment.