The client
A self-employed parent and their two adult children -- one T4-salaried, one also self-employed -- bought a $560,000 Norfolk County home together as three co-owners.
Purchase price
$560,000, Norfolk County
Uninsured, conventional
Parent's contribution
$80,000 down (40%)
Self-employed, 2-year average income
T4 child's contribution
$70,000 down (35%)
Straight T4 salary
Self-employed child's contribution
$50,000 down (25%)
Second self-employed, 2-year average income
The problem
Three unrelated income types had to be independently verified for the same one mortgage, while the ownership shares needed to reflect three genuinely different down-payment contributions rather than an even three-way split nobody had actually funded.
What made this a three-part file, not one
- ▸The self-employed parent's income needed its own 2-year NOA/T2125 average, distinct from either child's
- ▸The second self-employed child's income needed the same treatment independently -- two self-employed 2-year averages, not one shared figure
- ▸None of the three had contributed an equal third of the down payment, so an even split would have registered a title that didn't match reality
Getting three incomes documented correctly was only half the file. Registering the ownership to actually match who paid for what was the other half.
The numbers
Once each contribution was confirmed, setting the ownership split and qualifying the combined mortgage followed directly.
| Three contributions, one mortgage | Amount |
|---|---|
| Total down payment | $200,000 |
| Mortgage (uninsured, conventional) | $360,000 |
| Down payment | Amount | Share |
|---|---|---|
| Self-employed parent | $80,000 | 40% |
| T4-salaried child | $70,000 | 35% |
| Self-employed child | $50,000 | 25% |
The $360,000 mortgage qualifies at a combined 25.0% total debt service on $13,000/mo of income across all three -- well inside range, consistent with how average new mortgage amount data tracks a purchase at this price point. Verifying three independent income types, not the ratio itself, was the real work in this file.
The solution
A mortgage agent licensed under Ontario's Mortgage Brokerages, Lenders and Administrators Act treated each of the three incomes as its own file within the file, while keeping the ownership documentation matched to reality from the start.
First, verified the self-employed parent's income with its own independent 2-year NOA/T2125 average, and did the same, separately, for the self-employed child -- two distinct businesses, two distinct averages.
Second, took the T4 child's income at face value from pay stubs and a letter of employment, the most straightforward of the three verifications.
Third, had all three sign a documented cost-sharing agreement fixing the 40/35/25 registered split before the purchase closed, with title registered as tenants in common at that exact ratio, matching each buyer's actual down-payment contribution rather than an even default.
The outcome
The purchase funded at 4.85%, with total debt service across all three incomes at 25.0%.
Because this is an uninsured, conventional purchase at well over 20% down, CMHC's ratio maximums do not apply directly; the 25.0% figure is informational. Ontario land transfer tax on the $560,000 purchase came to $7,675.
What to take from this file
- 01Each self-employed income on a multi-borrower file needs its own independent 2-year average. Two self-employed co-buyers on the same mortgage are two separate verifications, never one shared figure.
- 02Register ownership shares to match actual contributions, not an even default. A documented cost-sharing agreement at purchase prevents a dispute over who owns what later.
- 03A multi-generational purchase can combine very different income types cleanly, provided each is verified on its own terms rather than blended together.
- 04Ask about every intended co-owner's down-payment source up front. The ownership split should be set before the mortgage is, not worked out afterward.
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%.
- ▸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.
Illustrative in this file — lender-specific, not rules:
- ▸4.85% contract rate — rates move daily; not a quote.
- ▸the 40/35/25 ownership split — this reflects these three buyers' own agreed contributions; there is no standard split for a multi-generational purchase.
- ▸the TDS figure — this is an uninsured, conventional purchase at well over 20% down -- there is no CMHC ratio ceiling; the number is informational.
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.