Every few weeks I get a version of the same question: “Should I roll my credit cards and line of credit into my mortgage?” It’s a fair question, and the honest answer is sometimes. Consolidation can free up real cash flow — but only if you understand what you’re trading. With the Bank of Canada holding its policy rate at 2.25% on June 10 — its latest in a string of holds — and prime sitting at 4.45%, high-interest balances aren’t going to shrink on their own. So let’s walk through the math.
Why the interest gap is the whole story
Consolidation works because of one simple gap: the rate on your consumer debt versus the rate on debt secured by your home. A credit card at 19.99% and an unsecured line of credit around 11% are expensive. A mortgage in the low-to-mid 4% range, or a home equity line of credit (HELOC) at roughly prime plus 0.5% (about 4.95% today), is far cheaper. When you move a balance from the first column to the second, every dollar of interest you stop paying is a real saving.
That’s the upside. The catch is amortization. A credit card balance might be gone in three or four years if you push at it. Roll it into a 25-year mortgage and pay only the minimum, and you can end up paying more total interest over time — even at a lower rate — simply because you’re borrowing for far longer. Consolidation saves money when you keep paying down the balance with the cash flow it frees up, not when it quietly stretches a short-term debt over decades.
A worked Waterloo Region example
Say a couple owns a home now worth about $720,000 with a mortgage balance of $360,000 — comfortably within the balanced market we’re seeing locally. On top of that they carry $22,000 on a credit card at 19.99%, $18,000 on an unsecured line of credit at 11%, and $15,000 on a car loan at 8.5%. Those three add up to $55,000, and the monthly payments come to roughly $1,495.
Refinancing the mortgage to $415,000 (well under the 80% loan-to-value ceiling a refinance allows) folds that $55,000 in. The added borrowing — $55,000 amortized over 25 years near 4.6% — costs about $309 a month. That’s roughly $1,186 a month of freed-up cashflow.
Here’s the part I’d underline: that $1,186 is only a win if it goes somewhere useful — extra mortgage payments, an emergency fund, or simply breathing room that keeps the cards from filling back up. If it disappears into new spending and the balances climb again, consolidation has solved nothing.
Refinance versus HELOC
A refinance replaces your mortgage with a larger one. You lock in a fixed or variable rate, and the debt is on a set repayment schedule. The trade-off: if you break a mortgage mid-term, you’ll likely face a prepayment penalty (three months’ interest, or an interest-rate differential calculation), plus legal and appraisal costs — often $1,500 to $3,000 all in. That cost has to be weighed against the interest saved.
A HELOC leaves your existing mortgage alone and adds a revolving line secured against your equity. It’s flexible and quick, but the rate is variable — tied to prime — so your payment moves when the Bank of Canada moves. With prime holding steady at 4.45% after the June 10 decision, that’s calm for now, but it’s a variable you’re choosing to carry.
Neither is automatically better. The right answer depends on where you are in your mortgage term, your discipline with revolving credit, and how long you plan to stay in the home.
Takeaways you can act on this week:
– Add up every non-mortgage balance, its rate, and its monthly payment — you can’t evaluate consolidation until you see the real cost of carry.
– Check your equity. In a balanced market most Waterloo Region owners have room, but a refinance caps out at 80% loan-to-value.
– If you’re mid-term, ask your lender for the exact prepayment penalty before assuming a refinance pencils out.
– Decide in advance where freed-up cashflow goes. Consolidation without a plan tends to repeat itself.
If you want, I’m happy to run your actual numbers both ways — refinance and HELOC — so you can see the trade-offs side by side. Book a time to connect.