CMHC Mortgage Insurance Explained: Premiums, Rules and Minimum Down Payment

How CMHC mortgage default insurance works in Canada: 2.80%–4.00% premiums, the C$1.5M insured cap, minimum down payment tiers and 30-year amortization rules.

By · Updated · 7 min read

If you buy a home in Canada with less than 20% down, your mortgage must carry default insurance, most often from CMHC (Canada Mortgage and Housing Corporation), or from private insurers Sagen or Canada Guaranty on nearly identical terms. It protects the lender, not you, but it is what lets you buy with as little as 5% down. Here is how the premium, the rules and the down payment tiers work in 2026.

Minimum down payment in Canada

Purchase priceMinimum down payment
Up to C$500,0005% of the price
C$500,000 – C$1,499,9995% of the first C$500,000 + 10% of the portion above
C$1,500,000 and above20% (not eligible for mortgage insurance)

Since December 15, 2024, the insured price cap has been C$1.5 million, up from C$1 million. For example, a C$600,000 home needs at least C$25,000 + C$10,000 = C$35,000 down (5.83%). A C$1.5M home needs at least C$125,000 if it is priced just under the cap, and C$300,000 at or above it.

CMHC premiums

The premium is a one-time percentage of the loan amount, set by your loan-to-value ratio:

Down paymentPremium (% of loan)
5% – 9.99%4.00%
10% – 14.99%3.10%
15% – 19.99%2.80%
20% or moreNone required

A 0.20% surcharge is added for a 30-year amortization. The premium is almost always added to the mortgage and paid off over the loan, not paid in cash. In Ontario, Quebec and Saskatchewan, however, provincial sales tax on the premium must be paid in cash at closing.

Example: a C$600,000 home

Going from minimum down to 10% down cuts the premium by almost C$6,000 and shrinks the loan. That is worth weighing against how long it would take to save the extra C$25,000.

30-year amortization: who qualifies

Insured mortgages are normally limited to 25 years. Since December 2024, all first-time buyers, and buyers of newly built homes, can choose a 30-year amortization on an insured mortgage. The longer term lowers the monthly payment, but it adds the 0.20% premium surcharge and more lifetime interest.

The stress test still applies

Insured or not, you must qualify at the greater of your contract rate + 2% or 5.25%, with a gross debt service (GDS) ratio of up to 39% and total debt service (TDS) of up to 44% under CMHC's limits. That is usually what caps your purchase price, more than the down payment. See what your income supports on the Canadian affordability by income pages.

Other rules to know

Run your numbers

The Canadian down payment calculator applies the minimum down payment tiers and the CMHC premium for any price. The closing costs calculator adds land transfer tax, legal fees and PST on the premium.

Published September 22, 2026. Figures are estimates for education only, not financial advice; program rules and rates change, so confirm with a licensed lender. Spotted an error? Let us know.