A car loan from home, converted twice

A foreign-currency debt introduces a real question for a lender: is the payment fixed, and how should it be converted to Canadian dollars for a Canadian ratio test? A common, defensible answer is to convert at a current rate and add a conservative buffer, to guard against currency swings between the file's approval and its actual funding. That answer, applied without looking at the specific debt, treated this US$520/mo loan as though it might grow unpredictably — when it couldn't.

The buffer's purpose — guarding against a foreign debt's payment moving unpredictably — had nothing to grip onto here. The loan's US-dollar payment is fixed by its own amortization schedule; only the CAD-equivalent cost moves with the exchange rate, and that's a modest, verifiable risk, not the open-ended one a flat buffer is built for.

GDS, unaffected by the car loan, was never in question. The entire gap between a declined file and an approved one sat inside how one debt's foreign-currency payment got converted — the kind of single-debt swing that can move a household's own ratio well outside what the household debt service ratio nationally would suggest is typical.

GDS on its own, using housing costs alone against the $7,300/mo combined income, worked out to 32.3% — comfortably inside CMHC's 39% maximum throughout, and unaffected by which car-loan figure was used. The $249/mo gap between the buffered and actual converted payments was the entire difference between a decline and an approval.

A mortgage broker licensed in Newfoundland and Labrador built a case for the loan's real payment, rather than accepting the first lender's default conservative treatment.

First, obtained the loan's official amortization schedule. This confirmed the US$520/mo payment was fixed, not floating — the specific fact a currency-risk buffer is meant to guard against simply didn't apply here.

Second, pulled a current bank exchange-rate quote rather than relying on the first lender's own internal conversion, which hadn't been dated or sourced in the file notes.

Third, assembled twelve months of Canadian bank statements showing the payment converting and clearing consistently by pre-authorized debit. A year of clean, uneventful payment history is exactly the kind of evidence that makes a conservative buffer unnecessary — the same logic behind how total debt service is meant to reflect a debt's real cost, not its worst-case one.

TDS fell to 42.0% once the loan was qualified at its actual converted payment, and the purchase closed insured at 95% LTV with the price, down payment and income exactly as first submitted.

Newfoundland and Labrador's provincial transfer-fee schedule could not be independently confirmed to the same standard as other provinces' land transfer taxes, so no dollar closing-cost figure is given here — the household confirmed the exact amount with their lawyer at closing.

• 01A currency-risk buffer answers a specific question: could this payment grow unpredictably? A fixed-payment foreign loan, documented as such, doesn't raise that question — and shouldn't be priced as if it does.
• 02Pull the loan's own amortization schedule before accepting a lender's default conversion treatment. Fixed and floating foreign debts carry genuinely different risk, and the file should say which one this is.
• 03A year of clean payment history through a Canadian account is strong evidence a buffer isn't needed. It shows the debt is not just documented, but reliably serviced.
• 04GDS and TDS can move independently on a file like this. Confirming GDS was never affected by the car loan focused the entire fix on the one number that actually needed it.
• 05Exchange rates and buffer policies both vary; neither is a fixed fact to quote. Get a dated rate and a specific lender policy before relying on either.