The client
A self-employed marine mechanic in Duncan, sole proprietor, servicing boat engines across the Cowichan Valley out of a truck loaded with diagnostic and repair equipment. His business carries a substantial capital cost allowance pool from years of tool and equipment purchases — which is exactly what made his application-year T2125 look strange.
Business
Sole proprietor, marine engine repair
Equipment-heavy UCC pool, several years' history
Year 1 net income
$54,000
After a typical ~$12,000 CCA claim
Year 2 net income
$68,000
Business grew, and $0 CCA claimed against a normal ~$13,000
Property
$250,000 purchase, Duncan
10% down payment, insured
The problem
An automated pre-underwriting review compares each year's numbers against the business's own history, and this file tripped two flags at once: net income up 26% year over year, and capital cost allowance — normally a meaningful deduction against an equipment-heavy business like his — down to zero. Together, the system's own note read: possible manufactured income pattern, refer for manual review.
The suspicion was reasonable on its face. It was also wrong, and the reason is that CCA is not mandatory in the first place.
What CRA actually says about claiming CCA
- ▸A taxpayer does not have to claim the maximum CCA available in any given year — any amount from zero up to the maximum for the class may be claimed
- ▸Claiming less, or nothing, in one year does not forfeit the deduction; the unclaimed amount simply stays in the undepreciated capital cost pool, available in a future year
- ▸CCA cannot be used to create or increase a business loss — it can only reduce net income to zero — which has no bearing here, since his income was positive either way
He and his accountant had made a deliberate, one-year election: skip the usual claim, let the full $68,000 flow through to his T1, and take the deferred deduction in a later year when the tax benefit would matter more than it did with a mortgage application coming up. Nothing had been hidden and no equipment had been sold — the underwriter's fraud-pattern read had the direction backwards, the opposite of the far more common problem of a lender needing to add back a non-cash deduction to find a self-employed borrower's true cash flow.
The numbers
He was buying his first home, so the file also sat against the backdrop of first-time buyer statistics for a market like Duncan's. This is an insured purchase at 90% loan-to-value, so CMHC's 39%/44% ceilings apply directly — and the election he'd made was the difference between the file clearing that ceiling and not.
| The purchase | Amount |
|---|---|
| Purchase price | $250,000 |
| Down payment (10%) | $25,000 |
| Mortgage before premium | $225,000 |
| CMHC premium (3.10% at 90% LTV) | +$6,975 |
| Total insured mortgage | $231,975 |
| Rate and payment | Figure |
|---|---|
| Contract rate, 5-year fixed (illustrative, not a quote) | 4.99% |
| Minimum qualifying rate | 6.99% |
| Monthly payment at the qualifying rate | $1,623 |
The same file, two ways
| GDS on housing costs of $1,903/month | Figure |
|---|---|
| On his real, as-filed income ($5,083/mo, two-year average $61,000) | 37.4% |
| On the income a normal CCA claim would have shown ($4,542/mo, two-year average $54,500) | 41.9% — over the 39% insured ceiling |
The election he'd made in Year 2 — entirely his to make, and entirely legal — was not incidental to the file. It was the difference between an insured purchase that qualifies and one that doesn't.
The solution
A BC-licensed submortgage broker treated the flagged pattern as a documentation gap to close, not an income figure to distrust.
First, obtained his accountant's undepreciated capital cost continuity schedule, showing every asset still on the books, no disposition in either year, and the full CCA pool simply carried forward rather than claimed.
Second, wrote a short memo explaining the election itself, citing that CCA is discretionary from zero to the maximum and that unclaimed amounts are deferred, not lost — addressing the underwriter's fraud-pattern concern directly rather than arguing around it.
Third, confirmed the numbers held up under both readings, showing the lender exactly what the file looked like on the as-filed income and on a normal-CCA hypothetical — the kind of side-by-side check that belongs in any thorough self-employed underwriting file — so there was nothing left to reconstruct or second-guess.
The outcome
The purchase funded at $231,975 (with premium), 90% loan-to-value, on a five-year fixed at 4.99%, qualifying payment $1,623, GDS 37.4% on his real, as-filed two-year average income — comfortably inside the insured ceiling that a normal CCA claim would have breached.
Insured purchase: CMHC's 39% GDS / 44% TDS ceilings apply directly here.
What to take from this file
- 01Capital cost allowance is entirely discretionary. A taxpayer may claim anything from zero to the maximum available for the year, and an unclaimed amount is simply deferred, not lost.
- 02A missing deduction is not, by itself, evidence of manipulated income. Confirm it with a UCC continuity schedule showing no hidden asset sale before treating it as suspicious.
- 03Know the direction of the story before responding to a flag. Most self-employed files fight over add-backs that understate income; this one turned on a legitimate election that overstated it, on purpose, for a good reason.
- 04Show the lender both versions of the math. A side-by-side comparison closes a fraud-pattern concern faster than an explanation alone.
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.
- ▸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.
- ▸CMHC — CMHC Home Start — minimum down payment tiers (5%/10%) and the $1.5M insured price cap.
- ▸CMHC — Purchase (Mortgage Loan Insurance) — default-insurance premium schedule by LTV band (25-year amortization).
- ▸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:
- ▸4.99% contract rate — rates move daily; not a quote.
- ▸$180 property tax / $100 heat estimates — lender heat and tax estimates for this market; not a bill.
- ▸the $12,000-$14,000 typical CCA claim and the alternate $55,000 Year 2 figure — illustrative figures showing what a normal claim would have looked like, not a filed return.
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.