If your mortgage renewal is coming up within the next year or two, you’ve probably already accepted that your monthly payments will rise. The ultra-low pandemic-era rates aren’t coming back anytime soon, and on April 29 the Bank of Canada kept its policy rate at 2.25%, doing so for the fourth time in a row.
However, there’s a question most homeowners don’t even ask themselves: what if you don’t wait for the renewal date? Let’s look at how the blend-and-extend program works, when it can truly be beneficial, and what pitfalls you should keep in mind.
The wave of mortgage renewals will be bigger than many think
According to the Canada Mortgage and Housing Corporation (CMHC), about 1.15 million Canadian households will renew their mortgages in 2026. Most of them locked in loans at historically low rates in 2020–2021 and will soon face what a “normal” interest-rate environment looks like.
I’ve previously talked about mortgage renewal strategy and the choice between a three-year and a five-year term. However, there’s another tool that often goes unnoticed — blend-and-extend.
1. What blend-and-extend is
In practice, it’s simpler than it sounds.
The bank takes your current interest rate, blends it with the rate it can offer today for a new term, and sets up a new mortgage agreement now for a longer period.
Because you’re not formally breaking your existing mortgage contract, there’s no prepayment penalty. You’re simply changing the terms of the existing loan.
The Financial Consumer Agency of Canada (FCAC) defines it as follows: the lender extends your mortgage term to the end of the current contract and combines the old interest rate with the new one. Administrative fees may apply, but there is usually no penalty for early termination.
People consider this option for two reasons:
- they want to lock in predictable payments ahead of time;
- they believe today’s rates are better than what will be available at renewal.
2. When it really makes sense
Blend-and-extend isn’t a universal solution. It’s more like a complex math problem.
This option is most justified in two cases:
First, if current market rates are noticeably lower than your existing mortgage rate and you don’t expect a significant further drop in rates before renewal.
Given that the Bank of Canada is signaling the likelihood of only minor rate changes going forward, that assumption in 2026 looks quite reasonable.
Second, if there’s no more than a year left until renewal and you prefer to lock in terms now rather than guess what rates will be in the future.
When is it not worth it?
If your current rate is already lower than what’s being offered today. In that case, you’re effectively voluntarily agreeing to a higher rate, which runs counter to the very purpose of the program.
3. The trap almost nobody talks about
The main risk isn’t the idea of blend-and-extend itself, but the way the blended rate is calculated.
There is no single standard formula.
Some banks use a simple average. Others factor in the remaining term of the current contract, which can lead to a completely different result.
So be sure to ask for:
- written confirmation of the proposed rate;
- a detailed calculation showing how it was derived.
Then compare that rate with what you could get with a standard mortgage renewal in a few months.
As of early May, the lowest five-year fixed rates among Canada’s largest banks were around 4.29% at RBC, and that can serve as a benchmark for comparison.
If the proposed blended rate differs only slightly from what you could get with a standard renewal after negotiating, the program creates only an illusion of savings.
4. Don’t forget the blend-and-increase option
There’s a similar tool — blend-and-increase.
In this case, you not only revise your existing mortgage, but also borrow additional funds — for example, for home renovations or to consolidate high-interest debt.
The interest rate is then calculated for the entire combined amount.
This can be useful, but the risk increases because the principal debt grows.
If the additional funds are used to pay off credit card debt, the strategy will work only if spending habits change. Otherwise, short-term debt simply turns into long-term debt.
5. Always compare the bank’s offer with alternatives
Even if your current bank offers blend-and-extend, treat it as just one option.
Get offers:
- from a mortgage broker;
- from other lenders;
- for a standard renewal or refinancing.
Banks know perfectly well that most clients don’t compare offers. That’s why the first offer is rarely the best.
Also, thanks to changes in the rules of the Office of the Superintendent of Financial Institutions (OSFI) that took effect in November 2024, when switching to another lender during a standard mortgage renewal, you generally no longer need to re-qualify under the federal stress test.
This significantly changes the math and can make switching lenders more advantageous.
Bottom line
Blend-and-extend is a real financial tool, not a marketing gimmick. However, it isn’t a magic fix for everything.
The greatest benefit goes to borrowers who:
- carefully run the numbers;
- demand a written calculation of the blended rate;
- compare it with standard renewal terms.
Consider a blend-and-extend offer as a starting point for negotiations, not a final decision.
The best choice depends on your current rate, the time until your mortgage renewal, and how important financial predictability is to you.
