85% of New Uninsured Mortgages Are Now Short-Term or Variable: Why That's a Bigger Gamble Than Most Borrowers Realize

The three-year fixed mortgage has become Canada's new default. Not because it makes sense. Because it feels like it does.

According to CMHC, more than 85% of new uninsured mortgages written in Q1 2026 carried either a variable rate or a fixed term shorter than five years. That figure represents a fundamental break from how Canadians have financed homes for decades. The traditional five-year fixed term, once the unquestioned standard, has become a minority choice. What replaced it is a bet dressed up as prudence.

The logic borrowers are following sounds reasonable on its face. Interest rates peaked in 2023. The Bank of Canada has been cutting since June 2024. Why lock in a five-year term at 5.4% when a three-year at 5.1% gives you a shot at refinancing in 2029 at something lower? The spread between the three-year and five-year fixed isn't huge, but it's there, and the shorter term preserves optionality. You're paying a little less now and keeping the door open to better rates later.

That reasoning works if rates fall on schedule and you can refinance without incident. It breaks if either assumption fails.

The renewal wall just got wider

Concentrating 85% of new mortgage originations into terms under five years does something structural to the national mortgage book. It shortens the average duration of household debt. Where renewals used to arrive in rolling waves spread across a decade, they now arrive in tighter clusters. The "mortgage renewal wall" that housing analysts warned about in 2024, the mass of low-rate pandemic mortgages hitting renewal in 2025 and 2026, was always going to be painful. What we're doing now is building the next one, except this time it's intentional.

A borrower who signed a three-year term in March 2026 will face renewal in March 2029. If the policy rate hasn't come down as much as they're expecting, or if it's risen again because inflation returned, that household absorbs the difference with no escape hatch. You can't accelerate out of a $680,000 mortgage on a Mississauga semi the way you can pay down a credit card. The asset is illiquid. The debt is sticky.

The uninsured segment, buyers with at least 20% down, who avoid CMHC insurance, tends to carry larger loan amounts. A $540,000 mortgage at 5.1% costs roughly $3,100 per month over 25 years. The same loan at 6.2% costs $3,500. That's $400 a month, or $4,800 a year, in a household budget that was already stretched to qualify under the stress test. Multiply that across tens of thousands of households renewing in the same 12-month window and you have a macroeconomic event, not a personal finance story.

Trading one risk for another

The shift to shorter terms isn't irrational. It's a response to what happened between 2022 and 2024, when anyone who locked in a five-year fixed at the perceived peak watched rates start falling six months later. Borrowers learned that locking in can be expensive if you're wrong about the cycle. So they're choosing flexibility.

But flexibility is not the same as safety. Variable-rate mortgages and short fixed terms both transfer interest-rate risk from the lender to the borrower. When interest rates climb at renewal, the lender's margin stays the same. The household's monthly payment jumps. When that risk was distributed across a mix of terms, some fives, some variables, some threes, individual shocks didn't correlate. Now they do.

The OSFI stress test still applies. Every uninsured borrower had to qualify at their contract rate plus 110 basis points, or 5.25%, whichever is higher. That's supposed to provide a buffer. What it doesn't provide is protection against a scenario where the entire market renews into higher rates at once, in a softening economy, with no room to move.

The five-year fixed wasn't popular because it was optimal. It was popular because it was boring. Boring, in mortgage finance, used to be the point.