The client
A buyer near Drummondville purchasing a $445,000 property at 15% down, whose full-time T4 job is the chief source of income, with a small orchard run on the side that reported a loss on the Notice of Assessment.
Purchase price
$445,000, Drummondville
15% down, insured
T4 employment income
$9,200/month
The applicant's chief source of income
Orchard's net loss on the NOA
$350/month
Already reduced once by Income Tax Act s.31
Other debt
$230/mo car loan
The problem
Income Tax Act s.31's restricted-farm-loss rules already limit how much of a farming loss can be deducted when farming is not the taxpayer's chief source of income -- so the $350/mo loss actually appearing on the Notice of Assessment is the loss AFTER that statutory cap, not the orchard's full economic loss.
Where the first lender's math went wrong
- ▸The NOA's net income figure already has the s.31 restriction built into it -- CRA applied the cap once, when the return was filed
- ▸A first lender's underwriter tried to be generous and added the reported $350/mo loss back a second time, treating the NOA figure as if it still needed correcting upward
- ▸That second add-back does not restore the orchard's true economic loss -- it simply double-counts the same statutory restriction CRA had already applied
The reported loss was real and correctly restricted once. Adding it back again did not make the file more accurate -- it made the qualifying income figure wrong in a new direction.
The numbers
Using the Notice of Assessment's own net figure, with no second add-back, is what a correctly-read file actually qualifies on.
| The insured purchase, on the NOA's own figure | Amount |
|---|---|
| Base mortgage (85% of purchase price) | $378,250 |
| CMHC premium (2.80% at 85% LTV) | +$10,591 |
| Total insured mortgage | $388,841 |
| Ratio check at the qualifying rate | Figure |
|---|---|
| Payment at the qualifying rate (7.15%), 25 years | $2,760/mo |
| GDS (payment + $290 tax + $130 heat) ÷ $8,850 income | 35.9% |
| TDS (GDS numerator + $230 car loan) ÷ $8,850 income | 38.5% |
On the correctly-read $8,850/mo qualifying income -- the T4 income net of the NOA's own already-restricted farm loss, added back nowhere a second time -- GDS comes to 35.9% and TDS to 38.5%, both comfortably inside CMHC's maximums with no extra add-back at all.
The solution
A courtier hypothécaire explained the s.31 mechanics to the file's underwriter in writing, rather than letting an artificially inflated income figure sail through unquestioned.
First, walked through the Notice of Assessment line by line, showing that the reported farm loss already reflects the statutory restriction CRA applied when the return was assessed.
Second, explained why treating the reported loss as an artificial drag to be added back overstates income -- it double-counts the same limitation, once by CRA and once by the underwriter.
Third, resubmitted using the NOA's own net figure as filed, with no adjustment for the orchard at all beyond what CRA had already applied.
The outcome
The purchase funded insured at 35.9% GDS and 38.5% TDS, qualified correctly on the NOA's own figure with no second add-back of a loss the statute had already restricted once.
Both ratios sit comfortably inside CMHC's 39% GDS and 44% TDS maximums; the file was never in danger of failing either way, but the correct figure -- not the erroneously doubled one -- is the one that belongs in the file, consistent with how mortgage broker market share data shows most self-employed Quebec files like this one are placed.
What to take from this file
- 01A Notice of Assessment showing a restricted farm loss has already had that restriction applied once by CRA. Do not add the reported loss back a second time as though the figure still needs correcting.
- 02Income Tax Act s.31 draws a real, working-farm/hobby-farm-adjacent line based on whether farming is the taxpayer's chief source of income. A side orchard alongside a full-time T4 job is exactly the fact pattern it targets.
- 03An overstated income figure is not a harmless error just because the file still qualifies. Use the correct figure even when both readings clear the lender's ceiling.
- 04Walk an unfamiliar underwriter through the NOA line by line. A restricted-farm-loss figure looks, at a glance, like an ordinary business loss -- it is not, and the difference matters.
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:
- ▸5.15% contract rate — rates move daily; not a quote.
- ▸the $350/mo restricted-farm-loss figure — one applicant's own NOA; Income Tax Act s.31's restriction formula is not stated here as a dollar rule, since the specific statutory breakpoints are outside this file's verified facts.
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.