The client
A household in Sherbrooke buying a $325,000 home at 5% down, with a bureau credit score of 745 and comfortable ratios — on paper, an unremarkable insured file. It still stalled, on something the bureau never sees at all.
Combined income
$6,900/mo
$82,800/yr
Property
$325,000 home, Sherbrooke
5% down payment
Bureau score
745
Well above CMHC’s 600 minimum — never in question
Bank statement finding
4 NSF fees, $45 each
Across two of the three months reviewed
The problem
GDS came to 38.0% and TDS to 40.9% — both comfortably under CMHC’s 39%/44% maximums, and the 745 score was nowhere near the 600 floor. The file was never a score problem or a ratio problem.
What the bank statements showed
- ▸Four NSF fees, $45 each ($180 total), across two of the three months reviewed for down-payment source-of-funds
- ▸None of the four tied to any bureau tradeline — bank fees like these do not report to the credit bureau at all
- ▸The lender’s policy reads recurring NSF activity in the mandatory statements as a cash-flow-management concern, independent of the score
Some lenders will pause or decline a file over exactly this pattern, even when every number on the credit side is clean — the statements are reviewed for a different reason than the bureau is.
The numbers
The insured structure itself was routine, and the score sat well above typical Canadian mortgage borrower credit scores.
| The insured loan, for completeness | Amount |
|---|---|
| Purchase price | $325,000 |
| Down payment (5%) | −$16,250 |
| Base mortgage (95% LTV) | $308,750 |
| CMHC premium — 4.00% in the 90.01–95% LTV band, capitalized | +$12,350 |
| Total insured mortgage | $321,100 |
| Rate & payments | Figure |
|---|---|
| Contract rate (illustrative, not a quote) | 4.95% |
| Minimum qualifying rate | 6.95% |
| Monthly P&I at the qualifying rate | $2,239 |
| Monthly P&I at the contract rate | $1,858 |
| Ratio check | Result |
|---|---|
| GDS: ($2,239 + $265 tax + $115 heat) ÷ $6,900 | 38.0% — under the 39% maximum |
| TDS (adding a $200/mo car loan), same housing cost ÷ $6,900 | 40.9% — under the 44% maximum |
The ratios and the score were never the obstacle. What stood between this file and funding was four bank fees the credit bureau never saw.
The solution
A courtier hypothécaire licensed with Quebec’s AMF traced each of the four NSF fees back to its actual cause before responding to the lender at all — exactly the kind of document red flag underwriters catch in seconds that needs a real answer, not a generic explanation.
Three of the four traced to a single duplicated pre-authorized insurance withdrawal that the bank itself later reversed; the fourth to an isolated timing gap between a paycheque and a bill. The broker obtained the bank’s own letter confirming the duplicate and its reversal, alongside the client’s signed letter of explanation.
Rather than re-arguing the same three months with an explanation attached, the broker requested one additional, current month of statements showing no further NSF activity — a faster and more convincing fix than resubmitting the original documents.
The outcome & the closing math
Approved and funded insured at 95% LTV, 25-year amortization, once the fresh, clean month of statements came back — at 38.0% GDS and 40.9% TDS, numbers that had been fine from the very first pull.
| Cash due at closing (beyond the down payment) | Amount |
|---|---|
| Quebec’s welcome tax (droits de mutation) on $325,000 — 0.5% / 1.0% / 1.5% marginal brackets | $2,986 |
| Quebec’s 9% tax on the default-insurance premium — 9% × $12,350; the premium itself is capitalized, but this tax is cash at closing | $1,112 |
| Legal fees & adjustments | varies |
Quebec’s tax on insurance premiums is legislated to rise to 9.975% on January 1, 2027 — worth flagging to any client closing near that date on a file with default insurance.
What to take from this file
- 01A strong score and comfortable ratios don’t protect a file from a banking-conduct flag. The 90-day statements are reviewed for a completely separate reason — check them before assuming a clean bureau means a clean file.
- 02NSF fees don’t report to the credit bureau, but they are still visible to any lender reviewing bank statements directly.
- 03An isolated, explained and documented NSF pattern is a very different file than an unexplained, recurring one. Get the bank’s own confirmation, not just the client’s word.
- 04One additional clean month of statements is often a faster fix than re-arguing the same three months.
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.
- ▸CMHC — Purchase (Mortgage Loan Insurance) — default-insurance premium schedule by LTV band (25-year amortization).
- ▸CMHC — CMHC Home Start — minimum down payment tiers (5%/10%) and the $1.5M insured price cap.
- ▸OSFI — Minimum qualifying rate for uninsured mortgages — the minimum qualifying rate — greater of contract rate + 2% or 5.25%.
- ▸CMHC — CMHC Reviews Underwriting Criteria — GDS 39% / TDS 44% maximums and the 600 credit-score floor for insured files.
- ▸Gouvernement du Québec — Droits sur les mutations immobilières — Quebec's transfer duties ('welcome tax') — 2026 indexed brackets.
- ▸Act respecting the Québec sales tax, CQLR c. T-0.1, Title III ("Taxation of Insurance Premiums"), ss. 507, 512, 520 — Quebec's 9% tax on insurance premiums (rising to 9.975% in 2027).
- ▸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:
- ▸4.95% contract rate — rates move daily; not a quote.
- ▸tracing 3 of 4 NSF fees to one duplicated withdrawal — this file's own facts; how any given NSF pattern gets explained and documented varies file to file.
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.