Uninsured Mortgages

An uninsured mortgage is a mortgage for which mortgage default insurance is not in force. If the borrower defaults, the lender does not have that insurance contract to reimburse eligible mortgage losses.

The word says nothing by itself about whether the borrower has strong credit or whether the mortgage is prime. Many borrowers with excellent income, substantial equity and low LTV have uninsured mortgages because their transaction or product sits outside insurance criteria.

A mortgage may be uninsured because insurance is not required and the lender chooses not to obtain it, because the property/value sits outside available insurer criteria, because the borrower chooses an amortization or product not eligible for insurance, or because the purpose is an ordinary refinance/equity take-out.

The classification can therefore result from more borrower flexibility, not from weaker credit. A borrower may deliberately choose a 30-year conventional amortization or refinance to access equity, knowing that the mortgage will be priced/underwritten as uninsured.

A bank or prime monoline lender can make an uninsured mortgage under its normal prime credit standards. The lender simply bears more of the mortgage credit loss directly rather than transferring it to an insurer.

That means “insured versus uninsured” should not be confused with “A lender versus B lender.” They answer different questions. Insurance status concerns risk coverage; lender category concerns who is lending and under what credit model.

For uninsured mortgage originations at federally regulated institutions, OSFI’s current prescribed minimum qualifying rate is the greater of 5.25% or the contract rate plus 2%. The qualifying rate is used to test repayment capacity; it is not the interest rate charged to the borrower.

Passing the prescribed MQR does not require a lender to approve the mortgage. Guideline B-20 still expects prudent underwriting of income, debts, property, collateral management and other risks, and lenders can apply their own policies.

Since November 21, 2024, OSFI no longer expects federally regulated lenders to apply the prescribed MQR to a qualifying uninsured straight switch at renewal when the borrower moves the mortgage to another federally regulated lender without increasing the loan amount or amortization.

This is not a no-underwriting rule. OSFI still expects sound borrower due diligence and assessment of willingness/capacity to pay. OSFI permits the unpaid principal balance to increase by up to $3,000 for related transaction costs such as penalties or fees, but equity take-out is not permitted. If the transaction otherwise adds new money, extends amortization or changes into a structure outside the straight-switch definition, the exemption may not apply.

Because the mortgage is not constrained by insurer eligibility, a lender may be able to offer features that standard insurable products do not support—such as higher property values, longer amortizations or ordinary equity take-out—subject to lender and regulatory policy.

That flexibility has a price. The lender retains more credit risk and may price the product differently, require more equity or use tighter property/credit rules in certain situations. Uninsured is not “fewer rules”; it is a different rule set.

A homeowner refinancing to consolidate debt, access equity, change mortgage amount or fund a general purpose will commonly use an uninsured mortgage. The mortgage can still be low LTV and prime-quality; the transaction purpose is what takes it outside standard purchase insurance.

Eligible secondary-suite construction is a current specialty exception: CMHC and private insurers now offer defined insured refinance programs. That exception reinforces the broader rule—classify the transaction by the actual program, not the word “refinance” alone.

An uninsured lender does not have the same default-insurance protection and may have different funding/capital treatment. That can translate into a rate premium compared with an insured or insurable mortgage. The exact difference is product- and lender-specific and changes over time.

A borrower should not pay extra down payment or give up a desired feature solely to reach a lower advertised rate bucket. Compare the dollar cost of the pricing difference against the value of the flexibility being purchased.

Current Sagen and Canada Guaranty public purchase criteria show low-ratio property-value limits below $1 million in common programs. A $1.2 million home purchased with $300,000 down has a 75% LTV—clearly conventional by leverage—but can still sit outside standard low-ratio insurability and therefore be funded as uninsured.

That is why “large down payment” and “insurable” should never be treated as the same statement.

A borrower may discover the classification only when comparing renewal offers. Some lenders price insured, insurable and uninsured transfers differently. An amortization extension, equity take-out or product change can also alter whether the transfer remains a straight switch or becomes a new uninsured origination.

The useful renewal comparison therefore includes the remaining balance, remaining amortization, requested changes and classification, not just the new rate.

Federally regulated institutions making uninsured mortgages remain subject to OSFI’s residential mortgage underwriting expectations, and Ontario borrowers using mortgage brokerages are also within the applicable provincial consumer-protection/licensing framework. Insurance status changes the credit-risk structure; it does not remove financial regulation.

Likewise, an uninsured lender still needs a supportable property value, verified borrower information and a mortgage that fits its own risk policy.

Uninsured financing can be the rational choice when the borrower needs a feature that insurer criteria do not allow: higher property value, longer amortization, general refinance, or another legitimate product characteristic. The decision should be based on total cost and flexibility, not on trying to make every mortgage insurable.

If the desired feature is optional, compare the uninsured version with an insurable alternative. If the feature is essential, focus on whether the uninsured mortgage remains affordable and contractually suitable.

Use Insurable Mortgages to see which characteristics can preserve insurer/funding eligibility, or Insured vs Insurable vs Uninsured Mortgage for the full classification matrix.