Calgary's Mortgage Renewal Cliff: The Math

What the Regulator Said

In April 2026, OSFI — the federal banking regulator — published its Annual Risk Outlook and put mortgage lending at the top of the list. The key sentence:

“As of January 2026, 3.1 million, or 52% of total mortgages will be renewing by the end of 2027.”

That's 3.1 million mortgages — 52% of every mortgage in Canada — coming up for renewal within eighteen months. And within that group, the one to watch:

“Of these renewals, there are 1.3 million, or 22% of total mortgages, that are fixed rate mortgages or variable rate mortgages with fixed payments (VRMFPs) that will be renewing for the first time since they were originated in the low mortgage-rate period of 2021 and 2022.”

1.3 million households locked in pandemic-era rates and have never renewed at anything higher. OSFI's report analyzes Toronto and Vancouver. It doesn't mention Calgary. So we did the Calgary math ourselves.

The Round Trip

One chart explains the whole story. The 5-year conventional mortgage rate sat around 3.34% through 2021 and early 2022 — the window when that 1.3-million cohort signed. It peaked at 6.47% in late 2023, and today sits at 5.13%. A household renewing this year steps from the bottom of the valley onto today's plateau in a single statement.

What Renewal Actually Costs

Take a mortgage originated in that window at 3.34%, 25-year amortization. After the 5-year term, the remaining balance renews at today's 5.13%. Standard Canadian mortgage math, no assumptions beyond that:

The middle of the market is the story: a $500,000 mortgage renews at $402 more per month — $4,829 a year, after tax. And these numbers are deliberately conservative: the rate series we use showed 3.34% in the origination window while many actual contracts closed lower, which would make the jump bigger, not smaller.

How Many Calgary Households

The 2021 census counts 345,349 owner households in Calgary — 68.8% of all households. Apply OSFI's national share of first-time renewers (22%) and you get roughly 76,000 Calgary households hitting their first-ever renewal into higher rates by the end of 2027. That's an estimate, not a count — it assumes Calgary's mortgage mix matches the national one — but it puts the scale in the right neighborhood: about one in five owner households.

What It Looks Like by District

Renewal shock scales with balance, and balance scales with price. Sizing a mortgage at 80% of each district's current detached benchmark shows the gradient across the city — illustrative sizing, not a measured cohort, but it makes the geography concrete.

The Indicator We're Watching — Honestly, It's Quiet

If renewal stress were forcing sales, you'd expect it to show up first in new listings. So far it hasn't: Calgary new listings are down 8.8% year-over-year for Apr–Jun 2026. We're publishing that plainly rather than implying distress the data doesn't show. This page updates as the cohort renews through 2026–2027 — if a listing response comes, it will appear here first.

What to Take From This

For households renewing: the numbers above are the size of the adjustment, and they're knowable months in advance — the renewal date is on the mortgage statement. For anyone watching the market: the cohort is large, the shock is real but bounded, and as of this writing the listing data shows no forced-selling signal in Calgary. We show what is, not what will be — and this page will keep saying so either way.