Refinance · 8 min read
Refinancing to Pay Off Debt: When the Math Actually Works
On the surface it looks like a no-brainer. Trade 22% credit card interest for a 4.5% mortgage refinance and pocket the difference. But the math gets a lot messier once you factor in penalties, longer amortization, new closing costs, and the very real human risk of running the cards right back up. Here are three real client files where the refinance worked beautifully — and one where we talked the client out of it.
When it works: the high-balance, disciplined consolidator
Halifax client, mortgage at 3.79% with three years left on a five-year term, $42,000 in credit card and line-of-credit debt at a blended rate of 19.5%. Penalty to break the mortgage was $4,800. After the refi, monthly debt service dropped from $3,420 to $2,180 — a $1,240 monthly cash-flow win. We restructured the amortization at 25 years and the client committed in writing to redirecting $800 of the savings into accelerated mortgage prepayments. Net interest saved over the next decade: roughly $48,000.
When it works: the equity-rich refinance at renewal
Moncton couple, mortgage coming up for renewal in 90 days, $28,000 in mixed consumer debt. Because we were within the 120-day renewal window, there was zero penalty. We blended the consumer debt into the new mortgage at 4.49%, and used the equity that had built up over five years of payments and appreciation to keep the new mortgage below 80% loan-to-value — which meant no CMHC premium. Total cost of refinance: $1,800 in appraisal and legal. Annual interest savings: $4,900.
When it works: the small-business owner with seasonal cash flow
Fredericton self-employed client, $35,000 across a HELOC and two credit cards used to cover winter slow-season expenses for the last three years. We refinanced into a re-advanceable mortgage that paid off the consumer debt and reset the HELOC to zero. The new mortgage payment is roughly the same as before, but the consumer debt service vanished and the HELOC is now available as a true emergency buffer rather than a constantly-tapped working-capital line.
When it doesn't work: the file we walked away from
Halifax client wanted to roll $18,000 of credit card debt into a refinance. Mortgage was a fixed 2.49% rate from 2021 with 26 months left. Penalty calculation came in at $19,400 — an interest-rate-differential penalty on a deeply in-the-money low rate. Even with the credit card consolidation, the client would have been net worse off by year four. We instead set up a structured payment plan with their bank's unsecured consolidation loan at 9.99%, kept the cheap mortgage, and the client will be debt-free in 36 months with no penalty paid.
Want this applied to your actual file?
Articles like this are a useful starting point — but every mortgage decision lives or dies in the details of your specific income, debts, and timeline. Book a free 15-minute call and Rahul will walk through your situation, run the real numbers, and tell you exactly what makes sense (and what doesn't).
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