How the Iran Conflict Is Affecting Mortgage Rates in Canada
The ongoing conflict in Iran and the closure of the Strait of Hormuz are creating unexpected ripple effects across the Canadian economy, particularly in the housing market. Despite the Bank of Canada maintaining its key interest rate, Canadian homeowners are seeing their mortgage payments increase due to geopolitical tensions thousands of miles away.
The Direct Impact on Fixed Rates
Since the conflict began in late February 2026, five-year fixed mortgage rates in Canada have risen by approximately 0.25% across all major lenders.
This increase represents a significant shift in a short period, with insured five-year fixed rates climbing from around 3.9% to 4.2% at their peak.
The change has been described as a "roller coaster" by mortgage experts, with rates experiencing double-digit basis point hikes.
The Oil-Bond-Mortgage Connection
The mechanism behind this rate increase is surprisingly direct. When the conflict escalated, oil prices skyrocketed in response to concerns about supply disruptions through the Strait of Hormuz, a critical shipping route.
This spike in oil prices triggered a corresponding rise in Government of Canada bond yields, particularly the five-year bond yield which increased by around 40 basis points at its peak.
This matters because lenders use bond yields to price their fixed mortgage rates.
When bond yields go up, mortgage rates follow suit. As Clay Jarvis, NerdWallet Canada's mortgage expert explains: "Once oil prices skyrocketed in reaction to hostilities in and around Iran, yields followed suit. This matters because lenders use bond yields to price their fixed mortgage rates."
Why Variable Rates Haven't Followed
Interestingly, while fixed rates have increased, the Bank of Canada has maintained its policy rate, keeping variable-rate mortgages relatively stable in comparison.
This divergence occurs because fixed rates are tied to bond market movements, while variable rates are directly connected to the Bank of Canada's overnight rate.
The Renewal Wave
This rate increase comes at a particularly challenging time for Canadian homeowners. The Canada Mortgage and Housing Corporation estimates that at least 1.5 million households had already renewed their mortgages by the end of 2025, with another million set to renew in 2026.
Many of these homeowners secured their mortgages during the pandemic's historically low-rate environment and are now facing significantly higher renewal rates.
What Might Happen Next
Economists suggest that if the conflict remains short-lived, the impact on Canadian mortgage rates will likely be contained. Oxford Economics forecasts only a temporary increase of about 0.2 percentage points to Canada's headline CPI inflation in Q2 and Q3 2026, with inflation expected to return to 2% by 2027.
However, if the conflict drags on and oil prices continue to rise (potentially to around $140 per barrel), fixed rates could increase further.
As Dan Eisner, CEO of True North Mortgage notes, "Because fixed mortgage rates have already risen with oil prices at about $100/barrel, it would take even higher oil prices to push this rate up further."
Advice for Homeowners
For Canadians facing mortgage renewals in this uncertain environment, experts recommend seeking unbiased mortgage advice tailored to their specific situation.
Some suggest that choosing a variable rate might offer immediate budget relief, with the option to lock into a fixed rate later if markets become more volatile.
Others advise monitoring Government of Canada bond yields as a key indicator of where fixed rates might be headed.
As Max Singh, a mortgage professional, notes: "People have struggled to pay their debt for a long period of time, and I think we are getting to the point where people are struggling to make even those more important payments like their mortgages on a regular basis."
In this globalized economy, it's clear that international conflicts can have very real impacts on household budgets here in Canada, making careful financial planning more important than ever.
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