The client
An IT consultant in Winnipeg incorporated 14 months ago after three years as a sole proprietor. The most recent year’s own-corporation T4 shows strong income, annualized from a partial year — but a single year under the new structure is thinner history than most lenders want to see on a self-employed file.
Structure
Incorporated 14 months ago
3 years as a sole proprietor before that
Own-corp T4
$10,000/mo annualized
$120,000/yr, most recent year
Prior sole-prop T1
$7,800/mo
$93,600/yr, most recent full year, with standard add-backs
Property
$460,000 home, Winnipeg
10% down payment
The problem
A lender using only the most recent own-corp T4 year, annualized from a partial year, is relying on income history that is real but short — the kind of file some lenders flag as unseasoned regardless of how strong the number looks.
The prior three years as a sole proprietor were clean and well-documented, but a change in business structure is exactly the kind of transition some lenders’ policies don’t automatically bridge.
The numbers
At 10% down this is an insured file on a mortgage in line with Canada’s average new mortgage amount, so GDS 39% and TDS 44% are the maximums that matter.
| Structuring the insured loan | Amount |
|---|---|
| Purchase price | $460,000 |
| Down payment (10%) | −$46,000 |
| Base mortgage (90% LTV) | $414,000 |
| CMHC premium — 3.10% in the 85.01–90% LTV band, capitalized | +$12,834 |
| Total insured mortgage | $426,834 |
| Rate & payments | Figure |
|---|---|
| Contract rate (illustrative, not a quote) | 4.69% |
| Minimum qualifying rate | 6.69% |
| Monthly P&I at the qualifying rate | $2,908 |
| Monthly P&I at the contract rate | $2,408 |
Blending the two income years
| Income source | Monthly |
|---|---|
| Own-corp T4, most recent year (annualized) | $10,000 |
| Prior sole-proprietor T1, most recent full year (with standard add-backs) | $7,800 |
| 2-year blended average used to qualify | $8,900 |
| Ratio | Result |
|---|---|
| GDS: $3,348 housing ÷ $8,900 blended income | 37.6% — under the 39% maximum |
| TDS: ($3,348 + $260 line of credit) ÷ $8,900 | 40.5% — under the 44% maximum |
The solution
A mortgage broker licensed with Manitoba’s MSC matched the file to a lender willing to blend the single own-corp T4 year with the prior sole-proprietor T1 for continuity, treating the change in business structure as a documentation question rather than a reason to start the income history over.
The package included both years’ T1/T4 slips and NOAs, the incorporation documents showing the exact transition date, and an accountant’s letter confirming the consultant’s client base and billing rate carried over largely unchanged across the switch — the same continuity story our piece on how Canadian lenders actually read self-employed income describes as the difference between a thin file and a bridgeable one.
The outcome & the closing math
Approved and funded: insured at 90% LTV, 25-year amortization, 5-year fixed term, qualifying on the $8,900/mo blended average.
Manitoba charges no Retail Sales Tax on the default-insurance premium — exempt since July 2020 — so unlike Ontario or Quebec, there is no separate cash-at-closing line for tax on the premium. Manitoba’s land transfer tax of $6,850 on this purchase still applies.
What to take from this file
- 01A change in business structure doesn’t have to reset the income history. Blending a single own-corp T4 year with prior sole-proprietor T1s is a documented, lender-specific way to bridge the transition.
- 02Continuity evidence matters as much as the numbers. The incorporation date and an accountant’s letter showing the same client base carrying across the switch turned two data points into one coherent story.
- 03Not every lender bridges this the same way. The averaging approach here is illustrative — each lender sets its own policy for a borrower mid-transition between structures.
- 04Manitoba’s insurance-premium tax treatment is a genuine outlier. No RST on the default-insurance premium changes the closing-cash math relative to Ontario or Quebec on an otherwise identical 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.
- ▸Government of Manitoba — Land Transfer Tax — Manitoba's land transfer tax brackets (no first-time-buyer rebate).
- ▸Government of Manitoba, Manitoba Finance Taxation Division — Notice RST 20-04, "Removal of RST from Residential and Business Property Insurance" (Issued April 2020) — Manitoba charges no retail sales tax on default-insurance premiums (since July 2020).
- ▸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:
- ▸4.69% contract rate — rates move daily; not a quote.
- ▸averaging a single own-corp T4 year with prior sole-prop T1s — each lender sets its own policy for a borrower mid-transition between structures.
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.