Debt consolidation through refinancing: when it makes sense in Ontario

If you own a home in Ontario and you are carrying high-interest debt, refinancing to consolidate is one of the most common financial moves people consider. The logic is straightforward: replace expensive debt with cheaper debt secured against your home equity.

But this strategy is not always the right call. Sometimes it saves you a significant amount of money over time. Sometimes it costs you more in the long run. And in every case, it converts unsecured debt into secured debt, which carries a risk most people do not fully think through.

This guide walks through the mechanics, the math, the alternatives, and the honest trade-offs of debt consolidation refinancing in Ontario. It is general information, not financial, legal, tax or insolvency advice.

How debt consolidation refinancing works

When you refinance to consolidate debt, you replace your existing mortgage with a new, larger mortgage. The difference between your old mortgage balance and the new one is used to pay off your other debts: credit cards, lines of credit, car loans, personal loans, or other obligations.

Illustrative example (a hypothetical borrower, not a real client file):

• Current mortgage balance: $350,000
• Home value: $600,000
• Credit card debt: $35,000 at 22.99%
• Car loan: $15,000 at 7.49%
• Total debt to consolidate: $50,000

This borrower refinances to a new mortgage of $400,000. At closing, $350,000 pays off the existing mortgage, and $50,000 goes to pay off the credit cards and car loan, leaving one monthly payment instead of three, with the full $400,000 at the mortgage rate.

The legal maximum loan-to-value for an uninsured mortgage at a federally regulated lender is currently 80% of a home's value, according to OSFI.7 In this example, 80% of $600,000 is $480,000, so a $400,000 refinance is within that limit.

The math: when consolidation saves you money

The savings come from the interest rate differential. Here is a detailed illustrative example, using the hypothetical borrower above.

Before consolidation

Note: the credit card calculation assumes a minimum payment of 2.5% of the balance each month, so the payment starts at $875 and falls as the balance falls. At 22.99%, that still leaves about $4,000 owing after 30 years, with roughly $100,000 in interest paid along the way.

After consolidation

In this illustrative example, the $50,000 is added to the mortgage at 5.5% over 25 years (the remaining amortization). The 5.5% figure is used only to illustrate the math; it is not a current rate quote. Ask a broker for personalized, current pricing. OAC. Rates subject to change. Conditions apply.

*Illustrative rate only, not a quote. OAC. Rates subject to change. Conditions apply.

Monthly cash flow change: $1,175 minus $305 = $870 per month freed up at the start, in this example.

But wait. The total interest on the mortgage portion is about $41,600 over 25 years, versus about $103,000 on the original debts in this example. So in this illustration, the interest is about $61,000 lower and $870 per month is freed up at the start. Actual results depend entirely on the rates, balances and term involved in a real file.

The catch: time horizon

Here is where the honest conversation happens. Rolling $50,000 into a 25-year mortgage addition is slow by design, because a 25-year amortization is what keeps the monthly payment low.

If this borrower instead paid that $50,000 down aggressively, say $1,800 a month, at a blended rate close to what the original debts were charging (roughly 18%, averaging the 22.99% card rate and the 7.49% car loan rate), it would be paid off in about three years, with total interest of roughly $15,000 to $16,000. That is well below the $41,600 paid over 25 years at the lower mortgage rate in the example above, because the loan is paid off so much faster.

The consolidation only saves money, in total interest, if you were realistically going to make only minimum payments. If you have the discipline and cash flow to attack the debt aggressively, keeping the debts separate and paying them down fast can be mathematically superior. The trade-off is the size of the monthly payment: a much larger payment aggressively, versus a smaller payment stretched over 25 years.

One hybrid approach some borrowers use is to consolidate for the lower rate, then make accelerated payments toward the consolidated amount. Many mortgage contracts allow lump-sum prepayments each year without penalty; the exact amount allowed is set by your own contract, so check it or ask your lender.

When consolidation does not save you money

Consolidation is not a universal solution. Here are the scenarios where it backfires.

1. You run the balances back up

This is the most common failure. You consolidate $35,000 in credit card debt into your mortgage, your cards are now at zero, and within 18 months you have run up new credit card debt again. Now you have a larger mortgage and new credit card balances. You are worse off than when you started.

If spending behaviour is the root issue, consolidation treats the symptom, not the cause. Address the spending first.

2. The penalties exceed the savings

Breaking your existing mortgage early to refinance triggers a prepayment penalty. The Financial Consumer Agency of Canada says the penalty is usually the higher of three months' interest on what you still owe or the Interest Rate Differential (IRD), which compares the interest left to pay on your term at two different rates.8 Depending on your rate, remaining term and lender, this can be a substantial amount.

Before proceeding, get the exact penalty amount, in writing, from your current lender. If the penalty wipes out more than a year or two of interest savings, it may make more sense to wait until your renewal date.

3. The debt is small relative to the costs

Refinancing involves costs: an appraisal fee, legal fees, a discharge fee from your current lender, and potentially a prepayment penalty. These vary by lender, lawyer and mortgage size, so get exact figures in writing before you proceed. If you are consolidating a small amount of debt, the closing costs alone can eat up most of the savings.

Rule of thumb: consolidation through refinancing tends to make more sense when the debt being consolidated is large enough that the interest-rate savings clearly outweigh the closing costs. For a small balance, ask your broker to run the break-even math before you commit.

4. You are close to paying off the debt anyway

If you have a manageable balance of credit card debt that you can realistically pay off within a year or two, consolidating it into a 25-year mortgage creates the illusion of progress while extending the timeline dramatically. Pay it off directly instead.

HELOC vs. refinance vs. private mortgage: comparing your options

Ontario homeowners with equity have three main paths for debt consolidation. Each has distinct advantages and risks.

Option 1: mortgage refinance

How it works: Replace your existing mortgage with a new, larger one. The excess funds pay off your debts.

Pros:

• Often a competitive rate, since it is secured by a first mortgage registered against your home
• Fixed payment schedule provides structure
• Blended into a single payment

Cons:

• Prepayment penalty on the existing mortgage
• Legal and appraisal costs
• Extends the amortization of the consolidated debt
• Qualification is subject to the stress test23

Best for: Borrowers with good credit, stable income, and a meaningful amount of debt to consolidate relative to the closing costs.

Option 2: home equity line of credit (HELOC)

How it works: You set up a revolving credit line secured against your home equity. OSFI expects federally regulated lenders to cap a HELOC at 65% of the property's value on its own, with the HELOC combined with any mortgage capped at 80%.7 You draw from it to pay off your debts.

Pros:

• No need to break your existing mortgage (avoids penalties)
• Flexible repayment; pay interest only or more
• Lower setup costs than a full refinance
• Priced as a spread over the lender's prime rate; the exact spread depends on the lender and your file

Cons:

• Variable rate; your payments fluctuate with the prime rate
• Interest-only minimum payments mean you may never pay it down without discipline
• Revolving nature creates temptation to re-borrow
• Some lenders require it to be paired with your mortgage (re-advanceable mortgage)

Best for: Borrowers who have the discipline to pay more than the minimum and who want to avoid breaking their current mortgage.

Option 3: private second mortgage

How it works: A private lender provides a second mortgage behind your existing first mortgage. The funds are used to pay off your debts.

Pros:

• No need to break your first mortgage
• Lenders focus mainly on home equity; every file is still assessed for the borrower's ability to repay
• Can often be approved and funded faster than a conventional refinance

Cons:

• Higher interest rates than bank financing; get a written rate quote before committing
• Lender and broker fees on top of the rate, which vary by file; get the total cost in writing
• Legal costs for both the first and second mortgage review
• Short terms, so you need a clear exit strategy

Best for: Borrowers who cannot qualify for a conventional refinance or HELOC due to credit issues, self-employment income, or other non-standard situations, and who have a clear plan to refinance into a conventional product.

Side-by-side comparison: $50,000 consolidation

*Illustrative figures only, not a quote. The refinance rate of 5.5% is assumed for this example. The HELOC rate uses RBC's posted prime rate of 4.45% (effective October 30, 2025, as posted in October 2026)6 plus an illustrative 0.5% lender spread; the spread you are offered will differ. OAC. Rates subject to change. Conditions apply.

The honest discussion: turning unsecured debt into secured debt

This is the part that many articles and many brokers skip. It deserves your full attention.

Credit card debt is unsecured, which means the lender does not hold your home as security for it. If the absolute worst happens and you cannot pay, you have options, including a consumer proposal or bankruptcy, which a Licensed Insolvency Trustee can explain.

When you consolidate that credit card debt into your mortgage, it becomes secured against your home. If you cannot make your mortgage payments, the lender can pursue remedies including power of sale. Your home is now directly at risk for debt that was not previously secured against it.

This does not mean consolidation is wrong. It means you need to be honest with yourself about two things:

1. Is your financial situation stable? If your income is reliable and the consolidation gives you breathing room, the lower rate and single payment can make your finances more manageable and may reduce the risk of missing payments.
2. Is the debt a one-time event or a pattern? If you accumulated the debt due to a specific circumstance (a medical issue, a period of unemployment, a divorce), consolidation can make strong sense because the root cause is behind you. If the debt is the result of ongoing overspending, consolidation without a budget change just moves the problem rather than solving it.

A responsible broker will ask you these questions. If a broker pushes consolidation without understanding your full financial picture, look elsewhere. This section is general information, not legal or insolvency advice; a lawyer or a Licensed Insolvency Trustee can explain what a consumer proposal, bankruptcy or power of sale would mean for your specific situation.

Steps to consolidate debt through refinancing in Ontario

1. Add up your debts. List every balance, interest rate, and minimum payment. Know the total number.
2. Get your mortgage statement. Confirm your current balance, rate, term remaining, and prepayment penalty.
3. Estimate your home value. Check recent comparable sales in your neighbourhood. Your lender will order a formal appraisal.
4. Talk to a licensed broker. A licensed broker can model the refinance, HELOC, and private options side by side and tell you which one, if any, makes sense for your situation.1
5. Calculate the break-even point. How many months of interest savings does it take to recoup the refinancing costs? If the break-even is longer than your mortgage term, reconsider.
6. Set a paydown plan. If you consolidate, consider committing to pay down the extra mortgage amount faster than the full amortization, using lump-sum prepayments allowed under your contract.