The client
A household in Belleville bought a $365,000 home at 10% down, carrying a wireless carrier's device-financing plan for a recently upgraded phone.
Purchase price
$365,000, Belleville
10% down, insured
Device-financing payment
$65/month, gross
As it reads on the credit bureau
Carrier's own bill credit
$60/month
Nets the real cost down automatically on the same bill
Combined income
$7,200/month
The problem
A wireless carrier's credit report tradeline for a phone-financing plan shows the plan's gross monthly payment. It has no field for the equal, offsetting promotional bill credit the same carrier applies automatically each month for a device traded in against the upgrade.
What the automated tool missed
- ▸The bureau tradeline showed a $65/month device-financing payment, gross
- ▸The carrier's own account statement showed an equal $60/month bill credit applied automatically, on the same bill, from the trade-in
- ▸A first lender's automated affordability tool read only the bureau's gross figure, counting the full $65 as a real, ongoing, uncredited debt
The household's actual out-of-pocket cost for the device was $5 a month. The file, for a while, was priced as though it were $65.
The numbers
Once the carrier's own bill credit was documented and netted against the device charge, the correction moved a small but real amount off total debt service.
| The insured purchase, correctly netted | Amount |
|---|---|
| Base mortgage (90% of purchase price) | $328,500 |
| CMHC premium (3.10% at 90% LTV) | +$10,184 |
| Total insured mortgage | $338,684 |
| Total debt service | On the gross bureau figure | On the carrier's real net cost |
|---|---|---|
| Payment at the qualifying rate (6.90%), 25 years | $2,351 | $2,351 |
| Property tax + heat | $395 | $395 |
| Device-financing line | $65 | $5 |
| Total debt service | 39.0% | 38.2% |
39.0% is inside CMHC's 44% TDS ceiling either way on this file, but the correction is exactly the kind of gap that can decide a tighter file -- consistent with how closely household debt service ratios run for many Canadian borrowers. GDS, at 38.1%, was never affected either way, since a device plan sits in TDS only.
The solution
A mortgage agent licensed under Ontario's Mortgage Brokerages, Lenders and Administrators Act went past the bureau's own tradeline to the carrier's own account statement before accepting the gross figure as real debt.
First, obtained the carrier's own monthly statement, showing the device-financing charge and the offsetting bill credit side by side on the same bill.
Second, documented the real, net $5/month cost the household actually pays, distinct from the $65 gross figure the bureau tradeline alone would suggest.
Third, moved the file to a lender whose underwriter would read the carrier's own statement, rather than one whose automated tool stopped at the bureau's gross-only line.
The outcome
The purchase funded insured at 38.1% GDS and 38.2% TDS, with the device plan correctly counted at its real, net-of-credit cost.
Both ratios sit comfortably inside CMHC's 39% GDS and 44% TDS maximums; the correction mattered to the number, not to whether the file could close.
What to take from this file
- 01A device-financing tradeline's gross bureau figure is not always the real cost. A carrier's own promotional bill credit can net it down to almost nothing, and the bureau has no field for that credit.
- 02Go to the carrier's own account statement, not just the bureau tradeline, for a device plan. The real charge and the offsetting credit both appear on the same bill.
- 03An automated affordability tool reads what the bureau reports, not what a client actually pays. A manual review can catch the gap an algorithm won't.
- 04Small, modern bureau lines deserve the same scrutiny as any other debt. A $60 monthly difference is a small number until it is the one that decides a tight file.
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.
- ▸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:
- ▸4.90% contract rate — rates move daily; not a quote.
- ▸the $65 / $60 device-plan figures — each carrier's own device-financing charge and promotional bill credit are set per plan and per device; these figures are illustrative of the mechanic.
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.