The insurance category of your mortgage — insured, insurable, or uninsurable — directly affects your interest rate, and most borrowers do not even know it exists. Here is how these categories work and why they matter.
The three insurance categories
Every mortgage in Canada falls into one of three categories based on whether it qualifies for mortgage default insurance:
| Category | down payment | Insurance Status | Who Pays for Insurance | Rate Impact |
|---|---|---|---|---|
| Insured | Less than 20% | Insurance required by law | Borrower (premium added to mortgage) | Lowest rates |
| Insurable | 20% or more | Qualifies for insurance, but not required | Lender may purchase bulk/portfolio insurance | Mid-range rates |
| Uninsurable | Any | Does not qualify for insurance | No insurance available | Highest rates |
The counterintuitive result: borrowers who put less than 20% down often get better rates than those who put 20% or more down.
Why insured mortgages get the best rates
The rate advantage for insured mortgages comes from the lender’s funding costs:
| Factor | Insured | Insurable | Uninsurable |
|---|---|---|---|
| Lender default risk | Zero (insurer covers 100%) | Low (lender can buy bulk insurance) | Full risk on lender |
| Capital requirements | Minimal | Moderate | Highest |
| Can be securitized via NHA MBS | Yes — lowest funding cost | No (but can use other vehicles) | No |
| Funding cost to lender | Lowest | Moderate | Highest |
| Rate to borrower | Lowest | +0.10% to +0.20% | +0.20% to +0.40% |
NHA Mortgage-Backed Securities
When a mortgage is insured (CMHC, Sagen, or Canada Guaranty), the lender can pool it into NHA Mortgage-Backed Securities (NHA MBS) guaranteed by the Government of Canada. These are extremely safe investments (near-government bond status), which means the lender can sell them at a low yield and fund the mortgage cheaply. That cheap funding is why insured mortgages get the lowest rates.
What makes a mortgage insurable vs uninsurable
| Criteria | Insurable | Uninsurable |
|---|---|---|
| Transaction type | Purchase only | Refinance, equity takeout |
| Purchase price | Under $1,000,000 | $1,000,000 or above |
| Amortization | 25 years or less | Over 25 years (30-year extended) |
| Property type | Owner-occupied residential | Non-owner-occupied, commercial |
| Borrower qualification | Passes stress test | May not meet insurer criteria |
| Property location | Standard Canadian property | Foreign property, non-standard |
Common scenarios by category
| Scenario | Category |
|---|---|
| First home, 5% down, $600K purchase, 25-yr amortization | Insured |
| Home purchase, 20% down, $700K, 25-yr amortization | Insurable |
| Home purchase, 20% down, $1.2M, 25-yr amortization | Uninsurable (over $1M) |
| Home purchase, 10% down, $600K, 30-yr amortization (first-time buyer) | Insured (2024 policy change allows 30-yr for first-timers) |
| Refinance to pull out equity, $500K balance | Uninsurable (refinance) |
| Rental property purchase, 20% down, $400K | Uninsurable (non-owner-occupied) |
| Home purchase, 35% down, $800K, 30-yr amortization | Uninsurable (30-yr amortization, not first-time buyer) |
Rate comparison by insurance category
Typical rates as of early 2026
| Term | Insured Rate | Insurable Rate | Uninsurable Rate |
|---|---|---|---|
| 5-year fixed | 4.04% | 4.19% | 4.39% |
| 3-year fixed | 4.29% | 4.49% | 4.64% |
| 5-year variable | 4.10% | 4.25% | 4.40% |
Cost difference on a $500,000 mortgage over 5 years
| Category | Rate | Monthly Payment | Total Interest (5 yrs) | Difference vs Insured |
|---|---|---|---|---|
| Insured | 4.04% | $2,634 | $92,785 | — |
| Insurable | 4.19% | $2,678 | $95,882 | +$3,097 |
| Uninsurable | 4.39% | $2,737 | $100,016 | +$7,231 |
Over 5 years, the uninsurable borrower pays approximately $7,200 more in interest than the insured borrower — despite having put more money down.
The insured mortgage premium trade-off
Insured borrowers get better rates, but they pay a mortgage default insurance premium:
| Down Payment | Insurance Premium (% of Mortgage) | Premium on $475,000 Mortgage |
|---|---|---|
| 5% to 9.99% | 4.00% | $19,000 |
| 10% to 14.99% | 3.10% | $14,725 |
| 15% to 19.99% | 2.80% | $13,300 |
| 20%+ | Not required | $0 |
Should you put less than 20% down to get a better rate?
In most cases, no. The insurance premium almost always outweighs the rate savings over the mortgage’s life. However, if you can only afford 5%–19% down, the lower insured rate is a silver lining — you are getting a better rate than someone putting exactly 20% down, which partially offsets the insurance cost.
Example: 15% down (insured) vs 20% down (insurable)
| Factor | 15% Down (Insured) | 20% Down (Insurable) |
|---|---|---|
| Home price | $500,000 | $500,000 |
| Down payment | $75,000 | $100,000 |
| Mortgage | $425,000 | $400,000 |
| Insurance premium (2.80%) | $11,900 | $0 |
| Total mortgage with insurance | $436,900 | $400,000 |
| Rate | 4.04% | 4.19% |
| Monthly payment | $2,287 | $2,174 |
| Total interest (25 yrs) | $249,244 | $252,074 |
| Total cost (mortgage + insurance) | $686,144 | $652,074 |
Even with a lower rate, the insured borrower pays $34,070 more over 25 years due to the insurance premium added to the balance. Putting 20% down is still financially better — the rate advantage of insured mortgages does not overcome the insurance premium.
How insurance category affects switching lenders at renewal
Your mortgage’s insurance status can affect your ability to shop for better rates at renewal:
| Category | Switching at Renewal |
|---|---|
| Insured | Easy to switch — the existing insurance transfers to the new lender. Most competitive offers |
| Insurable | Moderate — new lender can purchase bulk insurance if it meets criteria. Good competition |
| Uninsurable | Harder — fewer lenders compete for uninsurable mortgages. May have fewer renewal options |
This is another hidden cost of uninsurable mortgages — less competition at renewal means less negotiating power.
The bottom line
The insured/insurable/uninsurable classification is one of the most important but least understood factors affecting your mortgage rate. Insured borrowers get the best rates because lenders have zero risk. Insurable borrowers pay slightly more. Uninsurable borrowers — often those with the largest mortgages or refinances — pay the most. Understanding which category your mortgage falls into helps you set realistic rate expectations and negotiate more effectively.