9 Risks You Must Know Before Renewing Your Mortgage
Your mortgage renewal isn't just a formality — it's one of the biggest financial decisions you'll make every 3-5 years. Here are the material risks most Canadians overlook.
The Renewal Trap
Every mortgage renewal carries inherent risks that directly increase your cost of credit — and most of them your lender won't explain to you. When your term ends, your lender sends a renewal letter with a rate that's almost always higher than what you could get by shopping around. They count on one thing: your inertia.
But the rate is just the beginning. The product type, prepayment terms, charge structure, and amortization decisions you make at renewal can cost you — or save you — tens of thousands of dollars over your next term.
The 9 Risks That Increase Your Cost of Credit at Renewal
1. Auto-Signing Without Shopping
Your lender sends a renewal letter 30-120 days before maturity. Most Canadians simply sign and return it. This is exactly what lenders count on — their initial offer is almost always above market rate.
Real impact: A 0.30% rate difference on a $400,000 mortgage = $6,000+ in extra interest over a 5-year term.
2. Fixed vs. Variable Mismatch
Choosing the wrong product type at renewal can lock you in or expose you to payment volatility. A fixed-rate closed term means you cannot break the mortgage without significant IRD penalties. A variable-rate mortgage means your payments fluctuate with prime rate changes, and negative amortization is possible if rates spike.
Real impact: Breaking a fixed-rate mortgage mid-term can cost $10,000-$30,000+ in IRD penalties.
3. Extended Amortization Creep
Some borrowers unknowingly extend their amortization at renewal instead of continuing their original schedule. Mortgages exceeding 25 years result in significantly higher total interest costs. Failing to reduce your amortization at renewal compounds this problem.
Real impact: Extending from 20 to 25 years remaining on a $400,000 mortgage at 5% adds ~$40,000 in total interest.
4. Stress Test Lock-In
If you renew with your same lender, no new stress test is required — even if your financial situation has changed. But switching to a different lender triggers the OSFI B-20 stress test at the qualifying rate (contract rate + 2% or 5.25%, whichever is higher). This creates a "lender lock-in" effect.
Real impact: Borrowers who can't pass the stress test are trapped with their current lender's rate, even if better options exist.
5. No Frills & Restricted Products
Discounted mortgages offer lower rates but come with severe restrictions: higher penalties for breaking early, bona fide sale clauses (mortgage can only be discharged if the property is sold), limited prepayment privileges, and some lenders prohibit breaking the mortgage entirely.
Real impact: You may be unable to refinance, switch lenders, or make extra payments for the entire term.
6. Collateral Charge Barriers
If your current mortgage is registered as a collateral charge (common with big banks), switching lenders at renewal requires a full discharge and re-registration — meaning legal fees and an appraisal. A standard charge mortgage allows a simple, low-cost transfer.
Real impact: Expect $1,000-$2,500 in legal and discharge fees just to switch lenders.
7. Compounding Period Surprises
Most Canadian fixed-rate mortgages compound semi-annually (every 6 months), which is the industry standard. However, some lenders use monthly compounding for variable-rate products, resulting in slightly higher overall interest. HELOCs typically use daily or monthly calculations.
Real impact: Monthly vs. semi-annual compounding on $400,000 at 5% = ~$400 more per year in interest.
8. Legislative & Regulatory Changes
Future changes in laws or regulations may affect your ability to port, renew, or refinance under existing terms. Stress test rules, CMHC policies, and provincial regulations can all change between terms, potentially limiting your options at renewal.
Real impact: Rules that existed when you signed may no longer apply at renewal, leading to unexpected costs or restrictions.
9. Ignoring Prepayment Terms
When you sign a renewal, you're committing to a new term with new prepayment conditions. If you need to break that term early (to sell, refinance, or access equity), you'll face penalties. The penalty structure varies dramatically between lenders — from 3 months' interest to massive IRD calculations.
Real impact: Not reading the prepayment clause could cost you $5,000-$25,000 if your plans change mid-term.
Your Safe Renewal Checklist
Follow these steps to protect yourself and get the best possible outcome at renewal.
- 1
Start shopping 120 days before your maturity date — don't wait for the renewal letter.
- 2
Get quotes from at least 3 lenders or work with a mortgage broker who can compare for you.
- 3
Check if your current mortgage has a collateral charge — it affects switching costs.
- 4
Calculate whether shortening your amortization fits your budget (even 1-2 years helps).
- 5
Understand the prepayment privileges of your new term before signing.
- 6
Calculate your total cost of credit under the renewal offer vs. market rates — use the Payoff Lab to compare.
- 7
Ask about the compounding method — semi-annual is standard for fixed rates.
- 8
If you can't pass the stress test, negotiate harder with your current lender — they know you're locked in.
- 9
Read the full renewal agreement, not just the rate — watch for no-frills restrictions.
- 10
Consider variable vs. fixed based on your risk tolerance and the current rate environment.
- 11
Never auto-sign. A 15-minute call to a broker could save you thousands.
Frequently Asked Questions
Camilo Rodriguez
Founder of Mortgages Lab & Mortgage Expert
Camilo Rodriguez is the Founder of Mortgages Lab, a licensed mortgage broker with over 20 years of experience helping Canadians achieve financial freedom. He has trained 100+ mortgage agents across Canada, served as a former Mortgage Manager for TD Canada Trust, and was Past President of the Canadian Mortgage Broker Association – BC. He is the author of "From Debt to Zero," a guide to becoming mortgage free.
P.A.Y.O.F.F™, L.A.B™, M.A.P™ are Trademarks of Mortgages Lab®
Financial Disclosure
This page contains informational content only and does not constitute financial advice. Mortgage rates shown are sourced from publicly available lender data and may change without notice. Always verify rates directly with the lender. Mortgages Lab may receive compensation from partner lenders, which does not influence our editorial content or rate rankings. Built on Real Experience — 20+ years of working with real mortgage scenarios and helping Canadians achieve financial freedom.
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