The client
A departing spouse buying a home in Yarmouth, Nova Scotia on their own income, with a separation agreement that assigned a joint credit card and a joint line of credit solely to the other spouse going forward. On paper, those debts were someone else's problem now.
Buyer
Single income, $5,400/month
Departing spouse, post-separation
Purchase
$250,000, Yarmouth
Property tax $230/mo; lender heat estimate $110/mo
Down payment
$12,500 — 5%, the minimum at this price
LTV 95%, insured
Joint credit card
$260/mo minimum
Per the separation agreement, the other spouse's responsibility
Joint line of credit
$180/mo minimum
Per the separation agreement, the other spouse's responsibility
The problem
A private separation agreement settles what two people owe each other. It does not change what either of them owes a creditor — a bank or card issuer that never signed the agreement is entitled to collect from whichever name is on the account, regardless of what the spouses privately decided. Both joint accounts here kept reporting in full on the departing spouse's own bureau file.
What the separation agreement assigned, and what still counted
- ▸Joint credit card minimum: $260/mo — assigned to the other spouse, still on this buyer's bureau
- ▸Joint line of credit minimum: $180/mo — assigned to the other spouse, still on this buyer's bureau
- ▸Total debt service with both counted: 46.1% — over CMHC's 44% maximum
The lender's underwriting wasn't wrong to count them; a joint account is joint liability by definition, and the file simply reflected that reality until it changed. A signed separation agreement reassigns responsibility between the spouses — it doesn't discharge either one from the creditor who is actually owed the money.
The numbers
The purchase itself was never in question; only the $440 a month of joint debt that had been privately, but not formally, reassigned — a small fraction of the average mortgage payment most Canadian households already carry, but enough on its own to fail this file's ratios.
| The insured purchase | Amount |
|---|---|
| Purchase price | $250,000 |
| Down payment (5%, the minimum at this price) | −$12,500 |
| Base mortgage | $237,500 |
| CMHC premium at 4.0% (90.01–95% LTV band) | +$9,500 |
| Total insured mortgage | $247,000 |
| Total debt service | Joint accounts counted | Joint accounts closed |
|---|---|---|
| Qualifying payment (6.85% MQR, 25 years) | $1,707 | $1,707 |
| Tax and heat | $340 | $340 |
| Joint credit card | $260 | — |
| Joint line of credit | $180 | — |
| Total debt service | 46.1% ✗ | 37.9% ✓ |
GDS on the purchase alone, unaffected by the joint accounts either way, sat at 37.9% — the same figure total debt service lands on once both joint debts are gone, since this buyer carries no other debt of their own.
The solution
A Nova Scotia mortgage broker, registered under the province's Mortgage Regulation Act, treated the joint accounts as a closing condition rather than a documentation footnote.
First, obtained payout figures for both accounts directly from the creditors, current to the closing date, rather than relying on the separation agreement's own dollar figures, which had been fixed months earlier and no longer matched the accruing balances.
Second, had both accounts paid out and formally closed, not simply paid down to zero and left open — a paid-off but still-open joint account can be redrawn by either name on it, and a lender has no way to be certain it will stay at zero.
Third, obtained written closure confirmation from both creditors before the purchase's ratios were finalized, rather than accepting the other spouse's word that the accounts would be dealt with after closing.
The outcome
Both joint accounts were paid out and formally closed before the file's ratios were finalized. The purchase funded insured at 95% LTV, with GDS at 37.9% and TDS at 37.9%, both comfortably inside CMHC's maximums.
Yarmouth's municipal deed transfer tax, at the town's 1.0% rate rather than the 1.5% statutory maximum most Nova Scotia municipalities charge, came to $2,500 on the $250,000 purchase.
What to take from this file
- 01A separation agreement doesn't bind the creditor. Assigning a joint debt to one spouse privately doesn't stop it from counting against the other spouse's own mortgage file.
- 02Pay out and close a joint account — don't just pay it down. A zero balance on an account that stays open can be redrawn by either name on it.
- 03Get creditor confirmation in writing before finalizing ratios. A promise from the other spouse to handle it isn't something a lender, or a broker, can rely on.
- 04Get current payout figures, not the separation agreement's numbers. Interest and minimum payments accrue between the settlement date and the closing date.
- 05Municipal deed transfer tax rates vary across Nova Scotia. Yarmouth's 1.0% is below the 1.5% statutory maximum most municipalities, including Halifax, actually charge.
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.
- ▸Municipal Government Act, SNS 1998, c. 18, s. 102; and Government of Nova Scotia / Service Nova Scotia — "Municipal Deed Transfer Tax Rates" (current table, July 2026) — Nova Scotia's municipal deed transfer tax (1.5% statutory cap; Halifax at 1.5%).
- ▸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:
- ▸4.85% contract rate — rates move daily; not a quote.
- ▸$260 / $180 joint account minimums — illustrative anonymized figures; the joint-liability principle is the regulatory-adjacent fact.
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.