- If you originally purchased your home with less than a 20% down payment and paid a mortgage default insurance premium through CMHC, Sagen, or Canada Guaranty, your mortgage remains insured for its entire amortization, qualifying you for Canada's lowest mortgage renewal rates.
- Insured mortgage renewal rates are typically 0.15% to 0.35% lower than uninsured rates because the federal government backs the lender against default risk.
- A mortgage becomes uninsured if you initially put down 20% or more, refinanced to take equity out, extended your remaining amortization beyond 25 years, or purchased a home valued over $1 million prior to recent cap adjustments.
- As of November 21, 2024, the Office of the Superintendent of Financial Institutions (OSFI) removed the Minimum Qualifying Rate (stress test) for straight uninsured mortgage switches between federally regulated financial institutions.
- You cannot convert an uninsured conventional mortgage into an insured mortgage at renewal to access lower rates; once a mortgage is conventional, it remains uninsured or insurable based on underlying asset criteria.
You qualify for an insured mortgage renewal rate only if you paid an upfront default insurance premium through CMHC, Sagen, or Canada Guaranty at the time of purchase and have never refinanced or extended your original amortization schedule. If you purchased your home with a 20% or greater down payment, or if you extracted equity during your mortgage term, you qualify strictly for insurable or uninsured renewal rates.
Because lenders face zero credit loss risk on government-backed loans, insured renewal pricing sits at the lowest tier of the Canadian rate market, followed by back-end insurable rates, with uninsured mortgages commanding the highest pricing spread.
How do you know which mortgage category you belong to at renewal?
Your mortgage category at renewal is determined by your original loan structure and whether the loan was altered during your current term. In Canadian mortgage lending, contracts fall into three distinct pricing tiers: insured, insurable, and uninsured.
You have an insured mortgage if you bought your property with less than 20% down and paid mortgage default insurance, provided you have not added debt to the balance or extended the remaining amortization. Your policy number remains registered with CMHC, Sagen, or Canada Guaranty for the life of that original amortization schedule.
You have an insurable mortgage if you put down 20% or more, but the property and loan still meet standard underwriting guidelines: the original purchase price was under $1 million (or under $1.5 million for newer originations), the remaining amortization is 25 years or fewer, and the home is owner-occupied. Lenders pay for bulk portfolio insurance on these files behind the scenes, offering rates that sit just slightly above insured pricing.
You have an uninsured mortgage if your original purchase price exceeded $1 million under older rules, your property is a pure rental investment property, you extended your amortization to 30 years, or you refinanced to withdraw equity. Because the lender cannot insure this loan through any crown or private corporation, they hold the credit risk on their balance sheet, resulting in the highest interest rate tier.
Why are insured mortgage renewal rates lower than uninsured rates?
Insured mortgage renewal rates are lower because Canadian mortgage default insurance virtually eliminates credit risk for the lending institution. Under the National Housing Act, default-insured loans carry an explicit guarantee backed directly or indirectly by the federal government.
Because of this government guarantee, the Office of the Superintendent of Financial Institutions (OSFI) assigns a 0% risk-weighting to default-insured mortgages under capital adequacy guidelines. Canadian Schedule I banks and monoline lenders are not required to hold significant risk-capital reserves against these assets, allowing them to fund the loans via cheaper institutional vehicles like Canada Mortgage Bonds (CMBs).
Conversely, uninsured conventional mortgages require lenders to hold substantive regulatory capital against potential loan losses. Lenders pass that higher funding cost directly to borrowers through elevated interest rate spreads, which typically range from 15 to 40 basis points higher than an identical borrower holding an insured certificate.
As outlined above, rate pricing in Canada is primarily a function of default risk and regulatory liquidity, not simply your personal credit score or your household income.
Borrowers with large 35% down payments are often surprised to discover they are quoted higher rates at renewal than borrowers who put down a bare minimum 5% down payment. While counterintuitive, this discrepancy reflects funding mechanics rather than individual borrower creditworthiness.
| Mortgage Tier | Down Payment / Equity | Insurance Paid By | Max Amortization | Typical Rate Spread |
|---|---|---|---|---|
| Default-Insured (High Ratio) | Less than 20% | Borrower (at purchase) | 25 years (30 for eligible FTB/new builds) | Lowest base rate (Baseline) |
| Insurable (Conventional) | 20% or greater | Lender (portfolio back-end) | 25 years | +0.10% to +0.25% above insured |
| Uninsured (Standard Conventional) | 20% or greater | None (uninsurable risk) | Up to 30 years | +0.20% to +0.45% above insured |
| Uninsured Refinance / Equity Takeout | 20% or greater equity | None (prohibited by law) | Up to 30 years | +0.25% to +0.50% above insured |
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The real cost difference: Insured vs uninsured rate math on a $500,000 balance
A typical rate spread of 0.30% between an insured and uninsured mortgage renewal creates thousands of dollars in compounding interest differences over a standard 5-year term. Examining this on an active mortgage balance illustrates why knowing your tier is essential for negotiation.
Consider a homeowner renewing an outstanding principal balance of $500,000 with 20 years remaining on their amortization schedule. At an insured 5-year fixed renewal rate in the low 4% range—for example, 4.29%—the monthly principal and interest payment is approximately $3,097. Over 5 years, total interest paid equals roughly $98,300.
If that same homeowner holds an uninsured conventional mortgage and receives a renewal rate of 4.59% (a 30-basis-point premium), the monthly payment rises to approximately $3,178. Over that 5-year term, total interest paid increases to roughly $105,480. The 0.30% spread costs the homeowner an extra $81 per month, amounting to $7,180 in additional interest over a single 5-year term without paying down a single extra cent of debt.
Does the OSFI mortgage stress test apply when switching lenders at renewal?
No, the mortgage stress test does not apply when transferring your mortgage to a new federally regulated lender at renewal, regardless of whether your loan is insured or uninsured, provided you do not change your balance or amortization.
Previously, under OSFI Guideline B-20, borrowers with uninsured conventional mortgages who wanted to switch lenders at renewal were forced to requalify at the Minimum Qualifying Rate (the contract rate plus 2.00%, or 5.25%, whichever is higher). This locked thousands of homeowners with their existing banks, leaving them vulnerable to uncompetitive renewal offers.
On November 21, 2024, OSFI eliminated this requirement for straight uninsured switches between federally regulated financial institutions (FRFIs). Provided your loan balance remains unchanged and you adhere to your remaining amortization schedule, you can transfer your uninsured mortgage to any competing bank or monoline lender without undergoing the stress test, granting uninsured borrowers the exact same mobility that insured borrowers have historically enjoyed.
Can you switch an uninsured mortgage into an insured mortgage at renewal?
You cannot retroactively buy mortgage default insurance at renewal to qualify for lower insured interest rates. Federal regulations governed by the Department of Finance strictly dictate when mortgage default insurance can be bound.
CMHC and private insurers cannot insure conventional mortgages after the purchase closing date if the borrower did not purchase high-ratio insurance at origination. Furthermore, Canadian regulations prohibit transactional insurance on properties where the borrower extracts equity or extends their amortization beyond standard caps.
However, you can frequently shift an uninsured mortgage into the insurable category if your remaining amortization is reduced to 25 years or less and the property qualifies under your prospective lender's portfolio-insurance guidelines. Moving from an uninsured 30-year amortization to a 25-year remaining amortization during a renewal transfer often cuts your interest rate by 15 to 25 basis points.
How to secure the best mortgage renewal rate for your specific tier
Securing the lowest available renewal rate requires knowing your insurance status before your current lender issues their first renewal slip. Most primary lenders mail out renewal letters roughly 30 to 90 days before your maturity date containing non-negotiated posted rates that favour the bank's profit margins.
Begin shopping your renewal roughly 120 days prior to maturity. Request your original loan documents to confirm whether an insurance certificate number from CMHC, Sagen, or Canada Guaranty exists. If it does, demand prime insured tier rates from any prospective lender, and never accept a higher uninsured quote.
If your mortgage is uninsured, take advantage of the recent OSFI rule changes to solicit formal switch quotes from competing lenders, credit unions, and independent mortgage brokers. Use our mortgage renewal calculator to model how different rate spreads affect your total term cost, or submit your renewal offer for a free renewal review to verify that you are receiving the sharpest pricing available for your tier.
Frequently asked
If I put 20% down when I bought my home, am I insured or uninsured?
You have an uninsured or insurable conventional mortgage. Because you provided a down payment of 20% or greater, you did not pay individual borrower default insurance through CMHC, meaning you do not qualify for high-ratio insured renewal rates.
Can my mortgage switch from insured to uninsured without me knowing?
Yes, if you refinanced your property to borrow additional funds or extended your amortization period at any point during your ownership. Completing a formal refinance replaces your original insured mortgage charge with a conventional, uninsured registration.
Why do borrowers with larger down payments pay higher renewal rates?
Borrowers with 20% or more down payment have uninsured loans where the lender absorbs the default risk. In contrast, loans with less than 20% down carry government-backed default insurance, allowing lenders to access cheaper wholesale funding and pass those savings to borrowers.
Does paying off a big chunk of my insured mortgage make it uninsured?
No, making lump-sum prepayments or accelerating your mortgage payments does not void your default insurance. As long as you maintain the original loan structure and do not refinance, your mortgage remains default-insured until the balance is fully paid off.
Do I have to pay a fee to switch my mortgage at renewal?
When completing a straight switch or transfer at renewal without changing the loan balance, the incoming lender will typically cover standard appraisal, assignment, and transfer fees. However, your existing lender may charge a discharge or administration fee of roughly $200 to $400 depending on the province.
What is an insurable mortgage in Canada?
An insurable mortgage is a conventional loan (20% or more equity) that meets standard federal underwriting criteria, such as a maximum 25-year amortization and an owner-occupied property. The lender purchases back-end portfolio insurance on the loan, granting the borrower pricing between insured and uninsured tiers.
Can I qualify for an insured renewal if my home is now worth over $1.5 million?
If your mortgage was legally default-insured when you originally bought the home, appreciation in property value does not void your insurance status at renewal. You remain eligible for insured renewal rates on your remaining balance regardless of what the home is currently worth.
Do credit unions offer the same insured and uninsured renewal rules as banks?
Provincially regulated credit unions do not fall under federal OSFI oversight, giving them greater underwriting flexibility on conventional renewals. However, they access similar capital markets and generally offer tiered pricing based on whether a mortgage is default-insured, insurable, or uninsured.