Bond yield surge pushes fixed mortgage rates higher across Canada

Canada’s 5-year government bond yield has risen by about a quarter of a percentage point this week, prompting lenders to raise fixed mortgage rates.

“We’ve seen increases anywhere from like 20 basis points to almost 100 basis points with some lenders,” says Clinton Wilkins of Clinton Wilkins Mortgage Team. “The pricing seems to be all over the place.”

Wilkins says rising bond yields had been squeezing lenders’ margins for some time, but many held off on raising fixed rates in the hope that the increase would prove temporary.

“Lenders were trying to hold the line for as long as they could,” he says. “At some point some of these lenders were actually advancing mortgages at a loss to try to maintain where they were with the pricing and to continue to earn market share, but that’s not a sustainable game.”

Several major banks raised fixed mortgage rates by 10 to 20 basis points, but the increase some borrowers face could be larger if lenders also withdraw discretionary discounts.

“There’s a published rate, and then there’s a rate you can get depending on your relationship with the lender and what kinds of specials they have,” explains Ron Butler of Butler Mortgage. “Not only has the base rate gone up, but some of the discretionary specials got removed, so the published rate changes 20 bps, but if you remove discretion, and some of those are 40 bps changes.”

What’s driving mortgage rates

Butler points to energy supply disruptions amid renewed hostilities between the United States and Iran as a major factor behind the rise in bond yields.

He says releases from petroleum reserves have helped cushion the disruption, but doubts they can hold down prices indefinitely. The conflict has disrupted oil shipments through the Strait of Hormuz, while the United States has drawn heavily on its strategic reserve, according to Associated Press reporting.

“President Trump, at his Republican midterm convention, stated that gasoline prices will not come down until after the congressional elections in the first week of November,” Butler says. “So he’s guaranteed another two months of high prices.”

With diesel prices at record highs, Butler says prolonged fuel costs could keep inflation concerns elevated.

The U.S. Bureau of Labor Statistics reported that consumer prices rose 0.4% in August, driven in part by higher energy costs. Annual inflation held at 3.4%, above the Federal Reserve’s 2% target. Following the report, traders were pricing in an 85% chance of a quarter-point rate increase at the Fed’s next meeting.

“The bond market is pricing in a lot more inflation going forward,” says David Larock of Integrated Mortgage Planners. “The energy price spike is what I would call the primary cause, but there are other concerns.”

Larock also points to the U.S. debt burden as a concern for bond investors. The Congressional Budget Office projects that federal net interest costs will exceed $1 trillion in 2026. President Trump has also proposed $5,000 payments to U.S. adults if Republicans retain control of Congress, though how the plan would be funded remains unclear.

Larock says those fiscal concerns are adding pressure to longer-term Treasury yields.

“The 30-year Treasury yield is sort of the market’s opinion of how well the government is being run, and the vote right now, if you were to translate what the yields are saying, is not very well,” Larock says.

Anticipating the Bank of Canada’s next move

Even though Canada’s core inflation measures remain close to 2%, Larock says the country is getting swept up in a global rise in short- and long-term bond yields, translating into higher mortgage costs.

“The longer energy prices stay elevated, the greater the probability that we will see a broadening of inflation pressures tied to it, and I think that’s really the Bank’s main concern,” he says. “It feels like yields and rates are going to grind higher from here.”

Though the Bank of Canada recently held its policy rate steady and is widely expected to do the same in October, investors see more hikes on the horizon.

“The bond market is saying four hikes in the next 12 months, but it was saying that in the spring,” Larock says. “While we certainly should pay heed to what the bond market is pricing in, we also need to acknowledge that there’s not a lot of conviction behind that pricing; it’s been as volatile as everything else these days.”

The risk of locking in after a rate spike

Larock explains that the bond market is being driven by geopolitical factors that are impossible to predict.

For example, further escalations in the Middle East could send inflation and bond yields even higher. A peace deal between the United States and Iran could throw it in the opposite direction, and both outcomes seem equally likely in the coming months.

That uncertainty, he says, is a risk for borrowers considering locking into a fixed-rate mortgage after the recent spike: a sudden de-escalation could bring rates back down.

“Locking in a fixed rate after a big spike tied to a one-off event has risks, because if you lock in a 5-year fixed rate today for five years, and the Strait of Hormuz reopens in a month, you’re stuck with that rate,” he says. “The bond market is pricing in some worst-case scenarios, and if those scenarios don’t materialize, the fixed mortgage rates based on them will ultimately be expensive.”

As bond yields rise while the Bank of Canada holds its policy rate steady, the gap between fixed and variable-rate mortgages is widening. With some 5-year fixed rates now about a percentage point above comparable variable rates, it would take several quarter-point Bank of Canada hikes to erase that difference.

“To my mind, once we see a full 1% delta between fixed and variable — and certainly once we exceed 1%,” Butler says, “Then I think you just have to tell your clients, ‘If you’ve got the stomach for it, you should consider variable.’”

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