The client
A Brantford couple — one partner runs a small metal-fabrication shop as a sole proprietor, the other holds a stable T4 job — wanted to move up from their starter home. The Brantford market still gave them room to buy without stretching, but their own bank's underwriting system read the shop owner's income as shrinking two years running, and declined. Files like this are exactly why brokers carry the share of Canadian mortgage originations they do: knowing which lender's self-employed policy actually fits the file.
Borrowers
One T4-salaried spouse, one sole proprietor
Manufacturing/machine shop, 6 years in business
T4 income
$58,000 / year
$4,833 per month
T2125 net income, Year 1
$58,000
Before the equipment purchase
T2125 net income, Year 2
$41,000
After $22,000 in CCA on new equipment
New purchase
$520,000 detached, Brantford
Property tax $375/mo; heat estimate $125/mo
Down payment
$52,000 — 10%
Under 20%, so the file must be default-insured
The shop's CCA claims — the numbers that decided this file:
| T2125 net income | Year 1 | Year 2 |
|---|---|---|
| Net income before CCA add-back | $58,000 | $41,000 |
| CCA claimed on shop equipment | $9,000 | $22,000 |
| Net income with CCA added back | $67,000 | $63,000 |
The problem
The bank's automated income calculator pulled two years of Statement of Business Activities net income straight off the T1 General and averaged them — no add-backs, no adjustments. Read that way, income looked like it was falling, and the file was declined on ratios before anyone looked at why the second year was lower.
The raw-income arithmetic
- ▸Two-year average, no CCA add-back: ($58,000 + $41,000) ÷ 2 = $49,500/yr — $4,125/mo
- ▸Combined with the $4,833/mo T4 income: $8,958/mo total
- ▸TDS against that income: 48.3% — against CMHC’s 44% maximum. Declined.
The second year's lower net income wasn't a weaker business — it was Capital Cost Allowance on new equipment, a non-cash deduction that lowers taxable income without taking a dollar out of the shop's bank account. The bank's calculator couldn't tell the difference between a business that was struggling and one that had just bought a stamping press.
The numbers
At 10% down this is an insured purchase, so CMHC's maximums — GDS 39%, TDS 44% — are hard caps, not lender preferences.
| Structuring the insured loan | Amount |
|---|---|
| Purchase price | $520,000 |
| Down payment (10%) | −$52,000 |
| Base mortgage (90% LTV) | $468,000 |
| CMHC premium — 3.10% in the 85.01–90% LTV band, capitalized | +$14,508 |
| Total insured mortgage | $482,508 |
| Rate & payments | Figure |
|---|---|
| Contract rate — 5-year fixed (illustrative, not a quote) | 4.89% |
| Minimum qualifying rate — greater of contract + 2% and 5.25% | 6.89% |
| Monthly P&I at the qualifying rate — the ratios run on this | $3,347 |
| Monthly P&I at the contract rate — what they actually pay | $2,776 |
GDS — the same under either income treatment
| GDS (new home only) | Monthly |
|---|---|
| P&I at the qualifying rate | $3,347 |
| Property tax | $375 |
| Heat (lender-standard estimate) | $125 |
| Housing costs $3,847 ÷ income | see below |
The self-employed side: raw income vs. the CCA add-back
The add-back convention here — adding the full non-cash CCA claim back to net income — is standard for a sole proprietor, but each lender publishes its own version of how much of an add-back it accepts.
| Income treatment | Raw T2125 | With CCA added back |
|---|---|---|
| Two-year average, annual | $49,500 | $65,000 |
| Two-year average, monthly | $4,125 | $5,417 |
| Combined with the $4,833/mo T4 income | $8,958 | $10,250 |
| GDS | 42.9% | 37.5% |
| TDS vs. the 44% cap | 48.3% ✗ | 42.2% ✓ |
Adding back CCA swings both ratios comfortably inside the caps — GDS 42.9% falls to 37.5%, TDS falls from a declined 48.3% to an approved 42.2%.
The solution
An FSRA-licensed Ontario mortgage agent rebuilt the file around the one number the bank's system had gotten wrong.
First, isolated the real driver. The bank's decline read like a business in decline. A line-by-line look at the T2125 showed the opposite: revenue was flat, and the entire drop in net income traced to one year's equipment CCA.
Second, moved the file to a lender with a published add-back policy. Not every lender treats CCA the same way, and the borrower's own bank simply didn't offer the adjustment. A standard two-year average, run start to funded the right way, is the difference between a decline and an approval on an otherwise clean file.
Third, packaged the proof. An add-back claim with no paperwork behind it is just an assertion; this one had a full trail.
With the add-back documented and both ratios inside CMHC's caps, the insurer's sign-off followed the lender's.
The outcome & the closing math
Approved and funded: insured at 90% LTV, 25-year amortization, 5-year fixed term. The shop kept its equipment financing separate from the mortgage, and the couple moved up on schedule.
| Cash due at closing (beyond the down payment) | Amount |
|---|---|
| Ontario land transfer tax on $520,000 — marginal brackets; no first-time-buyer refund for repeat buyers | $6,875 |
| Ontario RST on the insurance premium — 8% × $14,508; the premium itself is capitalized, but the tax on it is cash at closing | $1,161 |
| Legal fees, title insurance & adjustments | varies |
The lender also required evidence of funds to cover closing costs on top of the $52,000 down payment, which the same 90-day statements demonstrated.
What to take from this file
- 01A falling net income on a sole-prop T2125 is a documentation question before it's a decline. CCA on a genuine business asset purchase can explain the whole drop.
- 02Not every lender adds back CCA the same way. This file swung nine TDS points once it moved to a lender whose policy recognized the add-back at all.
- 03The ratios run at the qualifying rate, not the contract rate. This file qualifies at 6.89% and pays at 4.89% — a $571-a-month gap between the ratio payment and the real one.
- 04Budget the closing cash separately from the down payment. Land transfer tax and RST on the premium added $8,036 in cash before legal fees, and the premium tax cannot be rolled into the mortgage.
- 05Bring the CCA schedule, not just the T1. The add-back is only as strong as the paper trail showing exactly what was claimed and why.
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 Reviews Underwriting Criteria — GDS 39% / TDS 44% maximums and the 600 credit-score floor for insured files.
- ▸OSFI — Minimum qualifying rate for uninsured mortgages — the minimum qualifying rate — greater of contract rate + 2% or 5.25%.
- ▸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.
- ▸Ontario.ca — Calculating Land Transfer Tax / Land Transfer Tax Refunds for First-Time Homebuyers — Ontario's marginal land transfer tax brackets and first-time-buyer refund.
- ▸Ontario.ca — Retail Sales Tax: Insurance and Benefits Plans — 8% Ontario RST on default-insurance premiums, cash at closing.
Illustrative in this file — lender-specific, not rules:
- ▸4.89% contract rate — rates move daily; not a quote.
- ▸full CCA add-back on both years — each lender publishes its own self-employed add-back policy.
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.