CMHC Mortgage Insurance Explained

Why Mortgage Insurance Exists

That distinction is important, but it should not make you dismiss the product. Without mortgage insurance, most lenders would not lend at 95 percent of a home’s value, because the risk would be too high. Insurance is what makes a small down payment possible in the first place. You pay the premium, the lender gets protection, and in return you get access to a mortgage you could not otherwise obtain. Understanding that trade is the key to deciding whether a smaller down payment is right for you.

In Canada, mortgage insurance is provided by the Canada Mortgage and Housing Corporation, known as CMHC, and by private insurers offering equivalent coverage. Lenders typically arrange the insurance as part of the mortgage approval process. You do not usually shop for it separately, and you generally cannot choose to skip it if your down payment is under 20 percent and you are borrowing from a lender that requires it. The premium is normally added to your mortgage amount, so you pay it over time as part of your regular payments, with interest, rather than as a single upfront cash payment, though other payment options may be available.

When Insurance Is Required

The threshold is clear: mortgage insurance is required when the down payment is under 20 percent of the purchase price. If you put down 20 percent or more, the mortgage is considered conventional and mortgage insurance is generally not required, although a lender may still require it in some situations, such as for certain property types or rental properties.

The minimum down payment rules work alongside this threshold. In Canada, the minimum down payment is 5 percent on the first 500,000 dollars of the purchase price, 10 percent on the portion above 500,000 dollars, and 20 percent minimum at 1,500,000 dollars and above. For example, a home priced at 600,000 dollars requires at least 25,000 dollars on the first 500,000 dollars plus 10,000 dollars on the remaining 100,000 dollars, for a total minimum of 35,000 dollars. That is less than 20 percent, so mortgage insurance would be required.

A home priced at 1,500,000 dollars or more requires at least a 20 percent down payment, which means it falls outside the standard insured-mortgage framework in this respect. Buyers in that price range need to plan for a much larger cash outlay, and they should confirm current eligibility rules with a lender, because property price, down payment, and amortization limits interact.

How Much Does It Cost?

The premium is calculated as a percentage of the mortgage amount, and the percentage depends mainly on your loan-to-value ratio, which is the mortgage amount divided by the purchase price or appraised value. The smaller your down payment, the higher the loan-to-value ratio, and the higher the premium percentage. A buyer with a 5 percent down payment pays a higher premium rate than a buyer with a 15 percent down payment, because the lender’s risk is greater.

Consider a clearly labeled illustration, not a quote. Suppose you buy a home for 500,000 dollars with a 5 percent down payment of 25,000 dollars. Your mortgage before insurance is 475,000 dollars, a loan-to-value ratio of 95 percent. If, for illustration, the premium rate for that ratio were 4.00 percent, the premium would be 19,000 dollars. Added to the mortgage, your total mortgage becomes 494,000 dollars. You would then pay interest on that larger amount over the life of the mortgage, so the true cost of the premium is more than 19,000 dollars in total interest terms.

Now compare a 15 percent down payment on the same home: 75,000 dollars down, a mortgage of 425,000 dollars, and a loan-to-value ratio of 85 percent. The premium rate at that ratio would be lower, for illustration perhaps around 2.80 percent, giving a premium of about 11,900 dollars and a total mortgage of about 436,900 dollars. The larger down payment saves money twice: you borrow less in the first place, and you pay a lower premium rate on that smaller loan.

These numbers are illustrative only, and actual premium rates, taxes, and treatment vary. In some provinces, provincial sales tax on the premium is payable in cash at closing and cannot be added to the mortgage. Always ask your lender for a written breakdown showing the premium, any tax on it, and the total mortgage amount after insurance is added. That single page prevents most surprises at closing.

What Insurance Does and Does Not Cover

Mortgage insurance does not protect you if you lose your job, become ill, or cannot pay. It does not pay your mortgage for you, and it does not forgive your debt. If you default and the property is sold for less than what you owe, the insurer compensates the lender for the shortfall, but the insurer may then pursue you for that amount. In other words, insurance shifts risk from the lender to the insurer, not away from the borrower.

What it does give you is access. A 5 percent down payment lets many buyers enter the market years earlier than saving 20 percent would. During those years, they build equity through payments and, if prices rise, through appreciation, though prices can also fall. The question is not whether insurance is “good” or “bad” in the abstract, but whether buying earlier with insurance beats waiting to save 20 percent in your specific situation.

Should You Put Down More Than the Minimum?

Sometimes yes, sometimes no, and the answer depends on more than the premium. If putting down 20 percent would empty your emergency fund, leave you unable to cover moving costs, or force you to borrow the down payment from a high-interest source, a smaller down payment with insurance may be safer overall. Cash reserves after closing matter: furnaces break, roofs leak, and jobs change, and a homeowner with no reserves is fragile even with a smaller mortgage.

If you are close to a premium threshold, however, a slightly larger down payment can be good value. Moving from a 5 percent down payment to a 10 percent down payment, or from 10 percent to 15 percent, can reduce the premium rate enough that the extra cash pays for itself in lower borrowing. Ask your lender to show you the premium at two or three down payment levels for the same home, so you can see the step changes rather than guessing.

Also consider your monthly payment comfort. A smaller mortgage means a smaller payment at any given rate, which gives you more room under the stress test and more room in your monthly budget. Remember, borrowers qualify at the higher of contract rate plus two percentage points or 5.25 percent, so the test payment on an insured mortgage is calculated at that stressed rate, just as it is for a conventional mortgage. A larger down payment helps qualification by shrinking the loan, not by changing the stress test rate.

Common Questions, Answered Plainly

Can I avoid insurance by getting a second loan for the rest of the down payment?

Generally no, at least not in the way buyers sometimes hope. Lenders look at your total borrowing and the source of your down payment. A borrowed down payment can affect qualification and may not be accepted for an insured mortgage. Be transparent about where the down payment comes from; undisclosed borrowing discovered late can collapse an approval.

Does insurance let me buy any property?

No. Insured mortgages have eligibility limits on property type, price, and condition. Some properties, such as certain rental properties or properties with major deficiencies, may not qualify for insurance or may require additional conditions. Confirm eligibility for the specific property early, not after an offer is accepted.

Can I remove insurance later?

You cannot simply cancel the premium and get a refund because your equity has grown. The premium was a one-time charge for insurance at the time of purchase. As you pay down the mortgage and build equity above 20 percent, future refinances or new mortgages may be conventional and not require new insurance, but the original premium is not refunded on that basis. Confirm current rules with your lender if this matters to your plan.

The bottom line is practical: mortgage insurance is the price of buying with less than 20 percent down. For many buyers it is the only realistic path to ownership, and it is worth paying if the home, the payment, and the cash reserves all make sense. For others, saving a larger down payment first, even if it takes longer, produces a smaller loan, a lower premium, and a stronger equity cushion. Compare both paths with real numbers for your home price, not with slogans about renting versus owning.

Educational content only, not financial advice. Rates, rules and program terms change — confirm current details with a licensed mortgage professional or the program’s official source before deciding.