The Mortgage Stress Test in Canada, Explained

The stress test decides how big a mortgage you qualify for — often for less than you’d expect. Here’s exactly how it works, when it applies, and the 2024 change that finally lets you shop lenders at renewal without re-testing, explained by a Calgary mortgage broker.

Quick answer: The mortgage stress test makes you qualify at a rate higher than the one you’ll actually pay — the greater of 5.25% or your contract rate + 2%. You have to prove you could afford payments at that higher rate. It applies to new purchases, refinances, and switches where your loan grows — but not to renewing with your current lender, and, as of November 21, 2024, no longer to a straight switch to a new lender at renewal.
5.25%
Benchmark floor rate
+2%
Added to your contract rate
Renewals
Exempt with your lender
2024
Switches at renewal freed

What is the mortgage stress test?

Introduced by Canada’s banking regulator (OSFI) in 2018, the stress test is a qualification check that asks a simple question: if interest rates went up, could you still afford your mortgage? Instead of qualifying you at your actual rate, lenders qualify you at a higher “stress-tested” rate. It protects borrowers from taking on more than they can handle — and it’s the number-one reason a pre-approval comes in lower than people expect.

How is the stress test rate calculated?

Your qualifying rate is the higher of two numbers:

  • The benchmark floor rate of 5.25%, or
  • Your contract rate + 2%.
Example: If your contract rate is 4.49%, the stress test qualifies you at 6.49% (4.49% + 2%) — because that’s higher than the 5.25% floor. You’d actually pay 4.49%, but you have to prove you could afford 6.49%. When rates are very low and contract + 2% falls below 5.25%, the 5.25% floor applies instead.

When does the stress test apply?

It’s not applied to every situation. Here’s where it does and doesn’t come into play:

Does the stress test apply?
Your situationStress test?
Buying a home (new purchase)Yes
Refinancing / pulling out equityYes
Increasing your balance or amortization when you switchYes
Renewing with your current lenderNo
Straight switch to a new lender at renewal (same balance & amortization)No — since Nov 21, 2024
Credit union, B-lender or private mortgageOften not (not federally regulated)

The 2024 change: shop your renewal without re-testing

This is big. For years, switching to a new lender at renewal meant re-passing the stress test — which trapped some homeowners with their existing lender even when a better rate was available elsewhere. As of November 21, 2024, OSFI no longer requires the stress test on a straight switch at renewal (where you’re not increasing your loan amount or extending your amortization).

What it means for you: at renewal you can now move to a lower rate with a different lender without having to re-qualify at the stressed rate. That’s real negotiating power — and exactly the kind of opportunity we watch for on your behalf.

Can I avoid the stress test?

With a bank or other federally regulated lender, the stress test always applies to new borrowing — you can’t negotiate your way out of it, and getting a discounted rate doesn’t help you pass it (the test uses the higher qualifying rate regardless). What does help is strengthening the picture the test measures: a larger down payment, lower other debts, or a co-applicant. Some credit unions and alternative lenders aren’t bound by the test and can be an option if you don’t pass — usually at a higher rate.

Why it matters

A higher stress-test rate means a lower maximum mortgage, so the test directly shapes what you can buy. Because the qualifying rate can move with the market, timing and preparation matter. The good news: a broker can structure your application — and time your switch or renewal — to get the most out of the current rules.

How a Calgary mortgage broker helps

We serve buyers and homeowners across Alberta — including Calgary and Edmonton — and here’s how we help with the stress test:

  • We calculate your qualifying rate and maximum mortgage before you shop, so there are no surprises.
  • We structure your application to pass — the right down payment, debts and amortization.
  • At renewal, we use the 2024 rules to move you to a better lender without re-testing where possible.
  • If a bank says no, we know which credit unions and lenders can still help.

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Frequently asked questions

What rate is the mortgage stress test based on?
The greater of the 5.25% benchmark floor or your contract rate + 2%. For example, a 4.49% contract rate is tested at 6.49%. You qualify at that higher rate even though you pay the lower one.
Do I have to pass the stress test to renew my mortgage?
Not if you renew with your current lender. And since November 21, 2024, you also don’t need to re-pass it to switch to a new lender at renewal, as long as it’s a straight switch (you’re not increasing the loan amount or amortization).
Does the stress test apply when refinancing?
Yes. Refinancing or pulling out equity is new borrowing, so the stress test applies at the qualifying rate.
How can I avoid the stress test?
You generally can’t avoid it with a bank — it always applies to new borrowing, and a discounted rate won’t help you pass. A larger down payment or lower debts helps you qualify. Some credit unions and alternative lenders aren’t bound by the test, usually at a higher rate.
Does a bigger down payment remove the stress test?
No — the test still applies, but a bigger down payment lowers your loan and your debt ratios, which makes it easier to pass and can increase how much home you qualify for.
Why did my pre-approval come in lower than I expected?
Almost always the stress test. You’re qualified at a rate about 2% higher than you’ll pay, which reduces your maximum mortgage. Planning around it up front is how you avoid surprises.

Wondering what you’d actually qualify for?

Let’s run your real numbers against today’s stress-test rate. Apply online in about two minutes, or book a no-pressure mortgage discovery call.

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This article is general information, not financial, mortgage or legal advice. Stress-test rules, the benchmark rate and lender policies are set by regulators and lenders and are subject to change; your qualification depends on your situation and lender approval. Please speak with a licensed mortgage professional about your specific circumstances. Mortgages for Less with INDI Mortgage.