Debt consolidation through your mortgage is that logical idea: rather than paying 22% on my Visa, why not roll it into my mortgage at much less? The monthly savings can be real. But the operation carries hidden costs and a behavioural trap you need to understand before signing — otherwise you can end up worse off than when you started.
The basic arithmetic
Take a typical Quebec file:
| Debt | Balance | Rate | Interest/year | Min. payment |
|---|---|---|---|---|
| Credit card | $15,000 | 21% | $3,150 | ~$450/month |
| Personal line of credit | $12,000 | 10% | $1,200 | ~$360/month |
| Auto loan | $18,000 | 8% | $1,440 | ~$350/month |
| Total | $45,000 | $5,790/year | ~$1,160/month |
Consolidating that $45,000 into a mortgage via refinance, at a typical mortgage rate of 4.5-6%:
- Annual interest on that $45,000: roughly $2,000-$2,700.
- Monthly payment on that amount (amortized over 25 years): roughly $240-$280.
Annual interest savings: $3,000 to $3,800. And the combined monthly payment drops from $1,160 to around $280 for that amount — freeing up $880/month of cash flow.
That's the pitch financial publications lead with. But the calculation hides three important costs.
The 3 costs people forget
1. Refinance fees
Consolidating through a mortgage triggers a full loan deed: notary fees ($1,200-$1,800) + property appraisal ($300-$600) + any admin fees ($0-$500). Total: about $1,500 to $3,000.
Rough rule: consolidation becomes worthwhile starting at $20,000 to $25,000 of high-rate debt to roll over. Below that, fees can wipe out year-one savings. A home equity line of credit (HELOC) can be a cheaper alternative for smaller amounts.
2. The time-stretching cost
By repaying $45,000 over 25 years instead of 3-5 years, you pay less per month but much longer. Over the full run, total interest can end up higher than what you would have paid on the card had you attacked it quickly.
Real savings only exist if you keep applying the same total amount in payments — with the surplus each month redirected to prepay the mortgage. Most lenders allow 10-20% of the principal in prepayments each year without penalty. If you don't do that, you've simply stretched your debt at a higher total cost.
3. The behavioural trap — the most dangerous one
The most common risk isn't mathematical. It's that once the cards are emptied into the mortgage, they stay open — and tend to get reloaded within 18-24 months. You end up with:
- The mortgage now $45,000 heavier.
- The cards full again, at the same 21% rates.
It's a pattern seen regularly. Consolidation works only if you close or drastically cap the cards at the moment of refinancing.
The 4 conditions for it to really work
1. Sufficient volume. At least $20,000-$25,000 of high-rate debt. Below that, refinance fees don't amortize quickly enough.
2. Sufficient loan-to-value ratio. The property must have enough equity for the refinance to stay under 80% LTV. If your mortgage already represents 75% of value, you don't have enough room.
3. Stress test passed. Refinancing = full requalification. If your GDS/TDS ratios or your credit score have deteriorated, the lender can decline.
4. Commitment to close or cap the consolidated accounts. Without that step, the reloading risk is high. If you're not sure you can hold the line, a direct repayment plan (without refinancing) may fit you better.
If any one of the 4 conditions isn't met, an AMF broker evaluates alternatives: direct negotiation with creditors, HELOC instead of a full refi, structured repayment plan.
Payback calculation
Before deciding, work out how long it takes to recover the fees through savings:
Example:
- Refinance fees: $2,500
- Possible IRD penalty (if breaking before maturity): $4,500
- Monthly savings on consolidated debts: $600/month
- Breakeven: (2,500 + 4,500) / 600 = ~12 months
If you plan to keep the property and the no-reload discipline holds, the operation is profitable. If you sell in 8 months or the cards get reloaded, it's not.
The alternative: the home equity line of credit
For smaller debts ($10,000-$25,000) or situations where you want to avoid a full loan deed, a home equity line of credit (HELOC) can serve as a bridge:
| Full refinance | HELOC | |
|---|---|---|
| Notary fees | $1,200-$1,800 | Reduced if already in place |
| Rate | Fixed or variable mortgage | Variable (prime + 0.5-1%) |
| Flexibility | Fixed amount released | Flexible draws as needed |
| Reload risk | High if cards kept | Same |
It's the right tool for intermediate amounts or spending spread over time. For a large one-shot consolidation, a full refinance is generally still more advantageous.
What Courteo does
Courteo is not a mortgage broker. We connect you with an AMF-licensed broker in the Courteo network, who can:
- Calculate whether your debt volume justifies a full refinance or a HELOC.
- Verify your LTV, debt service ratio and eligibility across multiple lenders.
- Build a closing/capping plan for the consolidated accounts.
- Calculate whether the operation is worthwhile now or whether it's better to wait until maturity (avoiding the IRD penalty).
The broker remains solely responsible for the file analysis.
Frequently asked questions on mortgage consolidation
Can I consolidate debt if my mortgage is on a variable rate?
Yes. Rate type (fixed or variable) doesn't prevent refinancing to consolidate. If you have a variable rate, the break penalty is generally 3 months of interest (much milder than the IRD penalty on a fixed). Worth calculating before deciding.
Can we consolidate a co-borrower's debts?
Yes — household debts (whoever's name they're in) enter the total TDS calculation. A broker evaluates the joint profile to see what's feasible at which lenders.
Is rolling an auto loan into the mortgage a good idea?
Depends on the rate. An 8% auto loan and a 5% mortgage rate → real savings. A 3% auto loan (manufacturer promotion) and a 5% mortgage rate → consolidation costs more. Don't consolidate mechanically — check the rate of each debt individually.
Does mortgage consolidation affect my credit score?
A new credit inquiry is triggered at refinance (temporary 3-5 point impact). Closing the consolidated cards can shorten your average credit history, which may nudge the score down slightly. Medium-term (12-18 months), if the accounts stay closed and the mortgage is paid on time, the score typically recovers.