The client
A buyer in Trois-Rivières put $15,000 (5%) down on a $300,000 purchase, $7,100/month of their own income. Years earlier, an unpaid $14,000 balance had been sold by the original bank to a collection agency.
Purchase price
$300,000
Trois-Rivières
Down payment
$15,000 (5%)
Insured file
Old balance, sold to collections
$14,000
Genuinely the applicant's own debt
How it appeared on the bureau
Twice
The original bank's account, and the agency's
The problem
There was never a legitimacy question here -- the applicant genuinely owed the $14,000, and never disputed that. The problem was structural: the original bank's account kept reporting to the credit report as a stale, charged-off tradeline even after the debt was sold, and the collection agency opened its own, separate tradeline for the exact same balance. The lender's automated pull read two accounts, and counted a qualifying payment against both.
How one debt became two tradelines
- ▸The original bank's account should have shown a zero balance or been closed outright once the debt was sold
- ▸Instead, it kept reporting as an open, charged-off account with a balance still attached
- ▸The collection agency opened a brand-new tradeline for the same balance, so the bureau file showed the debt twice
This is exactly the pattern collections that reappear after being sold describes -- a single debt's history doesn't always update cleanly across the original creditor and the agency it was sold to, and a lender's automated read has no way to know the two tradelines are the same obligation unless someone tells it so.
The numbers
The mortgage math itself was routine. What moved the file from a decline to an approval was recognizing that one debt had been counted as two.
| The insured purchase, one debt vs. two tradelines | Amount |
|---|---|
| Purchase price | $300,000 |
| Down payment (5%) | $15,000 |
| Base mortgage | $285,000 |
| CMHC premium — 4.00% at 90.01-95% LTV | +$11,400 |
| Total insured mortgage | $296,400 |
| Total debt service | Counted as two tradelines | Counted as one debt |
|---|---|---|
| Qualifying payment at 6.60% (MQR) | $2,003/mo | $2,003/mo |
| Property tax and heat | $360 | $360 |
| Car loan | $230 | $230 |
| Collection account, at this lender's 3%-of-balance convention | $420 + $420 | $420 |
| Total debt service ÷ $7,100 income | 48.4% | 42.4% |
GDS never moved -- it holds at 33.3% either way, since the collection account was never part of that calculation to begin with. The whole swing sat inside total debt service, and it moved by exactly one $420 monthly obligation the file had been carrying twice.
The solution
A courtier hypothécaire licensed under Quebec's Autorité des marchés financiers treated the double-counting as a reporting error to correct, not a debt to negotiate.
First, obtained the collection agency's notice of assignment. This confirmed the agency held the same, single $14,000 debt the bank had sold, with a matching account number and original creditor reference.
Second, confirmed with the original bank that the debt had in fact been sold and should no longer show a live balance. The bank's own records agreed the account should have closed out, not continued reporting.
Third, disputed the duplicate directly with both Equifax and TransUnion, asking specifically that the original bank's now-closed account be suppressed as a duplicate of the collection agency's tradeline, rather than disputing the debt's validity at all.
The outcome
Both bureaus suppressed the original bank's stale tradeline as a duplicate, leaving the single collection-agency account counted once. Total debt service fell from 48.4% to 42.4%, inside CMHC's 44% maximum, and Quebec's welcome tax on the purchase came to $2,686.
How quickly a bureau processes a duplicate-tradeline dispute varies; this file's timeline is not a guarantee of how fast either Canadian bureau will act on a similar request.
What to take from this file
- 01A debt sold to a collection agency can end up reporting twice. The original creditor's account doesn't always close out cleanly once the balance is sold.
- 02This is a duplication dispute, not a legitimacy dispute. The debt itself was never in question -- only whether it should count once or twice.
- 03GDS and TDS don't always move together. A collection account only ever touches TDS; correcting the duplicate left GDS exactly where it started.
- 04Get the notice of assignment before disputing anything. It's the document that proves the two tradelines are the same debt, not two separate ones.
- 05Ask every applicant whether an old debt was ever sold to a collection agency. A duplicate tradeline is easy for a bureau to create and easy for a client to never notice.
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.
- ▸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:
- ▸4.60% contract rate — rates move daily; not a quote.
- ▸the 3%-of-balance qualifying convention — each lender sets its own flat convention for qualifying a collection or charged-off account; some use a different percentage or the account's actual reported payment.
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.