The client
A Truro homeowner locked a five-year fixed rate near the pandemic-era lows of 2020. Five years on, the mortgage matured into a materially higher-rate environment — one Canadian mortgage renewal statistics show playing out across a huge share of the country's outstanding mortgages, not just this one file. The question was how big the shock actually was, and whether shopping the renewal could soften it.
Original mortgage, 2020
$315,000 at 2.14%
5-year fixed, 25-year amortization
Household income
$7,200/mo combined
Stable, salaried
Other debt
Auto loan, $380/mo
No other consumer debt
Housing costs
Property tax $280/mo, heat $140/mo
Lender-standard heat estimate
The problem
The original $315,000 mortgage carried a payment of $1,355/mo at 2.14% — a rate that will not be seen again anytime soon. Five years of amortization later, the balance at maturity is $264,651, with 20 years remaining. The lender’s own auto-renewal letter offered 5.65%, well above what was available by shopping.
Two renewal paths, same balance
- ▸Accept the lender's auto-renewal at 5.65%: payment rises to $1,833/mo — a $478/mo increase
- ▸Shop to a new lender at 4.89%: payment rises to $1,723/mo — a $368/mo increase
- ▸Difference: $110/mo, every month, for shopping instead of accepting the default offer
The numbers
The balance and remaining amortization are identical either way — the only variable is which rate the payment resets against.
| The 2020 payment vs. the renewal | Amount |
|---|---|
| 2020 payment (2.14%, 25-year amortization) | $1,355/mo |
| Balance at maturity (5 years later) | $264,651 |
| Remaining amortization | 20 years |
Because it is a stand-alone uninsured mortgage switching lenders with no increase in loan amount or amortization, the switch qualifies for OSFI's straight-switch exemption — no stress test was required to shop it.
| Renewal path | Rate | New payment | Increase | % jump |
|---|---|---|---|---|
| Lender's auto-renewal offer | 5.65% | $1,833/mo | +$478/mo | 35.3% |
| Shopped, new lender | 4.89% | $1,723/mo | +$368/mo | 27.2% |
Shopping instead of accepting the auto-renewal saved $110/mo — not a rounding error, and not something the client would have known to ask for without the comparison being run.
Debt service, before and after
| TDS | 2020 payment | Shopped renewal payment |
|---|---|---|
| Ratio | 29.9% | 35.0% |
Even at the higher shopped payment, TDS comes to 35.0% — comfortably inside the 44% ceiling. The shock here is a real cash-flow event for the household budget, not a qualification risk, consistent with broader data on mortgage payment increases at renewal across the 2020 fixed-rate cohort generally.
The solution
A mortgage broker registered under Nova Scotia’s Mortgage Regulation Act ran the comparison before the client had to decide anything.
First, quantified the shock against both benchmarks — the 2020 payment and the lender’s own auto-renewal offer — rather than letting the client discover the number cold from a renewal letter.
Second, used the straight-switch exemption to shop freely. Because the loan amount and amortization were not increasing, this uninsured switch did not require re-qualifying at a stress-tested rate, which is covered more broadly in our look at the 2026 renewal wave. That made shopping close to friction-free.
The outcome
Renewed at 4.89% with a new lender, a $368/mo increase over the 2020 payment — $110/mo less than the original lender’s own auto-renewal offer would have cost every month going forward. The client budgeted for the increase in advance rather than being surprised by it at maturity.
What to take from this file
- 01The payment shock on a 2020-vintage renewal is real even after five years of amortization progress. Quantify it early so clients are not surprised.
- 02A lender's posted auto-renewal rate is rarely its best rate. Shopping saved $110/mo here — close to free money for the effort of a comparison.
- 03The straight-switch exemption makes shopping easier, not harder, for stand-alone uninsured files. Remind clients that switching is not automatically a bigger hurdle than staying.
- 04Even with a real payment shock, ratios can stay comfortable. On many files, this is a budgeting conversation more than a qualification one — know which one you are actually having with the client.
- 05Bring both the dollar figure and the percentage jump to the conversation — different clients respond to different framing of the same shock.
Sources
Every regulatory figure in this file traces to one of these primary sources. Client details and anything that varies by lender are illustrative, as flagged below.
- ▸OSFI — OSFI exempts uninsured mortgage straight switches from the prescribed MQR and implements portfolio LTI limits — MQR exemption for uninsured straight switches at renewal (from Nov 21, 2024).
- ▸CMHC — CMHC Reviews Underwriting Criteria — GDS 39% / TDS 44% maximums and the 600 credit-score floor for insured files.
- ▸Provincial/territorial mortgage-broker legislation fetched directly (bclaws.gov.bc.ca, legisquebec.gouv.qc.ca, fcaa.gov.sk.ca, web2.gov.mb.ca, nslegislature.ca, assembly.nl.ca) plus FCNB's own site for NB and CanLII's index for PE — see notes for per-province method — provincial mortgage regulators and licence titles.
Illustrative in this file — lender-specific, not rules:
- ▸2.14% original 2020 rate and 4.89% shopped renewal rate — illustrative; actual rates on any given day vary by lender.
- ▸5.65% posted auto-renewal rate — each lender sets its own default renewal offer.
Authority & provenance
How this case file was built
We publish the origin, the verification method and the reviewer for every case file, so you can judge how far to trust it before you rely on it with a client.
Where it comes from
Derived from files handled by Treadstone’s fulfillment desk and from scenarios contributed by partner brokerages. Names, employers, exact amounts and dates are changed so no client or file is identifiable.
Provenance: Composite — a pattern seen repeatedly on fulfilled files, not a single transaction.
What is verified
Every regulatory figure traces to a primary source listed above and was checked against it on the date shown. The arithmetic is recomputed by machine on every rebuild.
Anything that varies by lender is labelled illustrative rather than stated as a rule.
Who reviewed it
Reviewed for Canadian regulatory accuracy before publication, and re-checked whenever a cited rule changes.
Reviewed by: Nicholas Parson, Treadstone Associates — reviews every case file before publication.
This case file is professional reference material for licensed mortgage professionals. It is not advice to a borrower, and it is not a lender commitment. Insurer rules, qualifying rates and provincial taxes change — confirm the current position with the insurer, regulator or lender before you rely on any figure here in a live file.