The client
A couple separating in Carleton Place carried a $265,000 matrimonial mortgage maturing in two weeks, financing a $132,000 equalization buyout through a new refinance.
Matrimonial mortgage balance
$265,000
4.85%, maturing in 2 weeks
Departing spouse's equalization share
$132,000
Set by the separation agreement
Assumed closing day
Day 15
What the family lawyer's own math used as the interest cutoff
Mortgage's own regular payment date
Day 28
What the outgoing lender's discharge statement actually charged interest through to
The problem
Because the matrimonial mortgage's own term was simply ending in two weeks, no prepayment penalty applied at all -- there was nothing to break early. But the outgoing lender's discharge statement still charged interest through to the mortgage's own regular payment date, 28 days out, not to the literal closing date the family lawyer had assumed, 15 days out.
Why the family lawyer's math came up short
- ▸The separation agreement's closing statement of adjustments calculated interest only to the assumed 15-day closing mark
- ▸The outgoing lender's own interest-adjustment convention charges interest through to its regular payment date, regardless of when the discharge itself actually closes
- ▸That regular payment date fell 28 days out -- 13 days beyond what the family lawyer's own estimate had used
Nothing about this involved a penalty of any kind. It was entirely about which date the mortgage's own interest calculation actually runs to.
The numbers
Confirming the lender's own regular payment date, rather than assuming a same-day cutoff, is the entire source of the $458 gap.
| Interest owed, two different assumptions | Amount |
|---|---|
| Interest to the assumed 15-day closing date | $528 |
| Interest to the lender's own 28-day regular payment date | $986 |
| Gap caught before the buyout funded | $458 |
| Interest calculation | Days | Amount |
|---|---|---|
| Assumed by the family lawyer's own closing statement | 15 | $528 |
| Actual, per the lender's own interest-adjustment convention | 28 / $986 |
No penalty formula is anywhere in this file. The $458 gap is simple per-diem interest, on the identical $265,000 balance at the identical 4.85% rate, for 13 more days than the closing statement had budgeted for.
The solution
A mortgage agent licensed under Ontario's Mortgage Brokerages, Lenders and Administrators Act confirmed the outgoing lender's own interest-adjustment convention directly, rather than letting the closing statement's own assumed date stand.
First, confirmed with the outgoing lender's discharge desk exactly which date its interest calculation actually ran to. Its own regular payment date, 28 days out -- not the literal closing day.
Second, recalculated the true interest owed through that date, coming to $986 rather than the assumed $528.
Third, had the family lawyer adjust the closing statement of adjustments by the $458 difference before the buyout funds were released to the departing spouse.
The outcome
The buyout refinance funded the full $132,000 equalization share at 4.70%, with total debt service on the keeping spouse's income alone settling at 19.8%.
Because this is an uninsured buyout refinance, CMHC's ratio maximums do not apply directly; the 19.8% figure is informational.
What to take from this file
- 01A maturing mortgage carries no prepayment penalty -- but the outgoing lender's own interest-adjustment convention can still charge interest past the literal discharge date. Confirm which date actually governs before assuming a same-day cutoff.
- 02A lender's regular payment date, not the closing date, is often what an interest-adjustment convention actually runs to. Ask the discharge desk directly rather than estimating.
- 03A $458 gap with no penalty attached can still derail a closing statement of adjustments. It is exactly the kind of figure a family lawyer working from a generic template can miss.
- 04Confirm the interest-adjustment convention in writing before the buyout funds are released, not after a shortfall surfaces at the outgoing lender's own reconciliation.
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.
Illustrative in this file — lender-specific, not rules:
- ▸4.85% / 4.70% rates — rates move daily; neither is a quote.
- ▸the 28-day interest-adjustment window — each lender sets its own regular payment date and discharge convention; this reflects one lender's own practice, not a universal rule.
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.