CMHC & Insured Mortgages

Mortgage default insurance protects the lender against eligible losses if the borrower defaults. CMHC is the best-known insurer because it is a federal Crown corporation, but Canada also has two private residential mortgage insurers: Sagen and Canada Guaranty. A lender may use one, two or all three, and a product shown by an insurer is not automatically available through every lender.

That matters because two borrowers with the same down payment can receive different answers depending on the insurer the lender uses, the lender’s own product rules and the property being financed. The insurance system is therefore better understood as a network of overlapping rules than as one CMHC checklist.

For a borrower, the cleanest way to understand insured financing is to separate three layers. Federal rules define important boundaries for government-backed mortgage insurance. Each insurer then applies its own products and underwriting criteria. The lender still makes its own credit decision and can be more restrictive than the insurer.

Passing one layer does not guarantee the next. A property may fit CMHC’s public maximum value and still fall outside a lender’s property policy. A borrower may fit a lender’s income policy but not the insurer’s insured-program criteria. And an insurer program may exist even though the borrower’s chosen lender does not offer it.

A high-ratio mortgage generally means the mortgage exceeds 80% of the property’s lending value. In a standard owner-occupied purchase through a federally regulated lender, that level of leverage generally requires mortgage default insurance if the transaction is eligible. A conventional or low-ratio mortgage is generally at 80% LTV or less.

But high-ratio, insured and CMHC are not interchangeable words. An insured mortgage can also exist at 80% LTV or less through lender-paid or portfolio insurance. Conversely, a low-ratio mortgage can be uninsured. The classification describes different dimensions: leverage tells you how much is borrowed relative to value; insurance status tells you whether mortgage default insurance is actually in force.

For CMHC’s current homeowner purchase program, the purchase price, lending value or as-improved value must be below $1.5 million. One- and two-unit owner-occupied properties can generally be insured up to 95% LTV; three- and four-unit owner-occupied properties up to 90% LTV. For one- and two-unit properties, the minimum equity is 5% of the first $500,000 plus 10% of the remainder.

Those numbers are important, but they are not the entire approval test. CMHC also publishes requirements involving occupancy, borrower qualification, debt-service ratios, credit and property suitability. Sagen and Canada Guaranty maintain their own current criteria, and lenders can overlay stricter rules.

CMHC currently publishes a minimum credit score of 600 for at least one borrower or guarantor under its standard homeowner purchase criteria, maximum GDS of 39% and maximum TDS of 44%. The debt-service ratios must be calculated using the greater of the contract mortgage rate plus 2% or 5.25%.

Those figures are useful outer markers, not a formula that guarantees approval. The lender can apply stricter credit standards, and the application can still fail because of income quality, debts, down-payment evidence, property, occupancy or another program requirement. A borrower at 599 is not automatically declined everywhere, and a borrower at 800 with ratios below the published ceilings is not automatically approved.

Default insurance reduces part of the lender’s loss exposure; it does not outsource the lending decision. The lender remains responsible for prudent underwriting and for satisfying the insurer’s conditions. In practice, an insured purchase can fail because of the borrower, the property, the transaction, the lender’s policy or the insurer’s decision.

This is why “CMHC will approve me” is not a useful way to think about the process. The borrower needs a mortgage that is acceptable to the lender and, where insurance is required, acceptable for insurance.

CMHC Home Start currently permits up to a 30-year amortization when at least one borrower meets CMHC’s first-time-homebuyer definition or the borrower is purchasing an eligible newly built home. The property must be owner-occupied and the mortgage must fit the program’s high-ratio criteria. Sagen and Canada Guaranty publish similar 30-year purchase pathways.

The extra five years can reduce the scheduled payment, but it slows principal repayment and carries an additional insurance premium. Insured Mortgage Amortization separates the payment benefit from the lifetime-cost effect.

Insurers maintain specialized products for situations such as newcomers, self-employed borrowers, purchase-plus-improvements, second homes and other defined needs. The existence of a specialty program can matter when a standard insured mortgage would not fit.

That does not mean unusual income or property is automatically accepted. Specialty programs usually replace one standard assumption with a different evidence test. A self-employed borrower may have access to an insured program, for example, but the income still needs to be reasonable and supportable.

Ordinary cash-out refinancing is commonly treated as uninsured financing. However, Canada now has insured refinance programs for a defined purpose: adding eligible secondary suites. CMHC Refinance, for example, can support eligible owner-occupied projects up to 90% LTV with a maximum 30-year amortization and its own property-value and project rules.

This is an important reasoning lesson: classification should follow the actual program and transaction purpose, not a memorized slogan. A general rule can be directionally useful while a current specialty product creates a legitimate exception.

Default insurance changes the lender’s risk and funding economics. That can allow an insured mortgage to be priced very competitively even though the borrower has contributed less equity. This can create a counterintuitive result: a borrower with 10% down may see a lower contract rate than a borrower with 20% down on a different classification.

The lower rate does not make the smaller down payment automatically cheaper. The insured borrower also has a larger base mortgage and usually a borrower-paid insurance premium. The right comparison is total borrowing cost, monthly cash flow, liquidity left after closing and the expected time the mortgage will be held—not the rate alone.

HopeWell’s anonymized funded cases include insured purchases involving stated self-employed income, maternity leave, multiple jobs, newcomer down-payment tracing, U.S. income and unusual sources of down payment. The common lesson is not that insurance solved those issues; it is that the borrower still had to satisfy the relevant evidence and qualification rules while also fitting the insured structure.

See, for example, the Caledon self-employed first-time buyer case and the Brantford newcomer down-payment tracing case. These are examples of what happened in specific files, not lender or insurer promises.

When comparing mortgage options, ask four separate questions: How much equity is being contributed? Is default insurance actually in force? Could the mortgage meet an insurer’s criteria even if the borrower is not paying a high-ratio premium? Is the transaction outside insurance entirely? Those questions lead to insured, insurable and uninsured classifications without treating “conventional” as a synonym for any one of them.

Use Insured vs Insurable vs Uninsured Mortgage for the side-by-side decision map.

It does not protect the borrower from job loss, disability, death, rising payments or an unaffordable mortgage. It does not guarantee lender approval. It does not turn an unsuitable property into acceptable security. And a borrower-paid premium is not automatically refunded when the mortgage balance later falls below 80% LTV.

Mortgage default insurance is therefore best understood as a risk-transfer mechanism for the lender that enables defined mortgage structures, not as personal payment protection for the borrower.

If the question is what insurance covers, continue to Mortgage Default Insurance. If the question is what it costs, use Insured Mortgage Premiums and the CMHC Insurance Calculator. If the question is 25 versus 30 years, use Insured Mortgage Amortization. If you already have 20% or more down, continue to Conventional, Insurable & Uninsured Mortgages.