CMHC mortgage insurance (mortgage default insurance) is mandatory on Canadian home purchases where the down payment is below 20%. The premium is added to your mortgage balance, rates range from 2.80% to 4.00% in 2026, and Ontario buyers owe the 8% PST on the premium in cash at closing. Understanding how it works before you buy puts you in a stronger position.
Are You Budgeting for the Right Number?
Most first-time buyers in Ontario focus on the down payment and forget about what comes next. Then the mortgage approval arrives and there is a new number on the statement they did not plan for. That number is the CMHC mortgage insurance premium, and for buyers putting less than 20% down, it is not optional.
CMHC mortgage insurance is not a choice. It is a federal requirement on any mortgage in Canada where the down payment falls below 20% of the purchase price. It is added directly to your mortgage balance, which means the majority of buyers never see it as a separate bill. But it affects your mortgage from day one, and knowing exactly how it is calculated changes how you plan your purchase.
This guide breaks down who needs it, what it costs in 2026, how it affects your qualification, and what to watch for at closing. If you want a personalized walk-through based on your specific purchase price and down payment, book a free consultation with Sebastian Skibinski.
What Is CMHC Mortgage Insurance?
CMHC mortgage insurance, formally called mortgage default insurance, is a financial product required by federal law on all high-ratio mortgages in Canada. A high-ratio mortgage is any mortgage where the buyer’s down payment is less than 20% of the home’s purchase price.
The insurance is provided by one of three federally approved insurers: Canada Mortgage and Housing Corporation (CMHC), SAGEN (formerly Genworth Canada), or Canada Guaranty. All three operate under the same federal guidelines, charge the same premium rates, and are accepted by all federally regulated lenders in Canada. The terms CMHC insurance and mortgage default insurance are used interchangeably in practice.
The insurance protects the lender, not the buyer. If you default on your mortgage, the insurer compensates the lender. The buyer’s benefit is indirect: it allows A-lenders including the major chartered banks to offer competitive rates to borrowers with smaller down payments than they otherwise would. For a full breakdown of the insurance products Ontario buyers need at closing.
Who Is Required to Have CMHC Mortgage Insurance in Ontario?
CMHC mortgage insurance is mandatory under the National Housing Act for any federally regulated lender offering a mortgage with a down payment below 20%. This applies to most chartered banks, credit unions, and mortgage companies in Canada.
You Need CMHC Mortgage Insurance If:
- Your down payment is less than 20% of the purchase price
- You are purchasing a property priced under $1,500,000
- The property will be your principal residence or a rental with no more than four units
- You are borrowing from a federally regulated lender
You Do Not Need CMHC Mortgage Insurance If:
- Your down payment is 20% or more of the purchase price (conventional mortgage)
- The purchase price is $1,500,000 or above (insured mortgages are not available at this price point)
- You are using a private lender or a lender that does not require insured mortgage products
If you are unsure which category applies to your situation, book a call with Sebastian to confirm your mortgage type before you begin your property search. Sebastian structures every application carefully to match the right product to the right lender.
How Much Does CMHC Mortgage Insurance Cost in Ontario?
CMHC mortgage insurance premiums are set nationally and reviewed periodically. As of 2026, the premium rates are as follows, calculated on the total insured mortgage amount after your down payment.
| Down Payment | Premium Rate (2026) |
| 5.00% to 9.99% | 4.00% of insured mortgage amount |
| 10.00% to 14.99% | 3.10% |
| 15.00% to 19.99% | 2.80% |
| 20% or more | No mortgage insurance required |
A Real-World Example
A buyer in Mississauga purchases a home for $650,000 with a 10% down payment ($65,000). The insured mortgage amount is $585,000. The CMHC premium at the 3.10% rate is $18,135. That amount is added to the mortgage balance, making the total mortgage $603,135. The buyer also owes $1,450.80 in Ontario PST (8% of $18,135) at closing as a cash payment.
A buyer of the same property with a 15% down payment ($97,500) has an insured mortgage of $552,500. The 2.80% premium is $15,470. PST at closing on that premium is $1,237.60.
Running these numbers before you decide on your down payment amount helps you understand the true cost difference between putting down 10% versus 15%. Sebastian Skibinski works with buyers across Toronto, Vaughan, and throughout the GTA to model these scenarios.
How CMHC Mortgage Insurance Affects Your Mortgage Application
CMHC mortgage insurance does more than add a cost. It also shapes what you can qualify for, what properties are eligible, and what income requirements apply.
Maximum Amortization Period
Insured mortgages in Canada are subject to a maximum amortization period. As of August 2024, the federal government extended the maximum amortization for insured mortgages on new builds to 30 years for all first-time buyers. For resale properties purchased with an insured mortgage, the maximum amortization remains 25 years in most circumstances.
Maximum Purchase Price
Insured mortgages are only available on properties priced below $1,500,000. If the purchase price meets or exceeds this threshold, the buyer must have at least 20% down and cannot use an insured mortgage product.
Gross Debt Service and Total Debt Service Ratios
CMHC applies its own maximum debt service ratio guidelines that lenders must follow for insured mortgages. The Gross Debt Service (GDS) ratio must not exceed 39%. The Total Debt Service (TDS) ratio must not exceed 44%. These limits affect how much you can borrow at your income level.
Understanding how these ratios interact with your income and existing debt load is central to getting approved at the best available rate. Visit us to see how Sebastian approaches application structuring for insured mortgage buyers.
What Are the Benefits of CMHC Mortgage Insurance for Buyers?
The primary benefit for buyers is access. Without mortgage default insurance, lenders would not offer competitive mortgage rates to borrowers with less than 20% down. The insurance backstop allows A-lenders including the major banks and credit unions to extend their best rates to high-ratio borrowers.
A secondary benefit is market access. Insured mortgage products allow qualified buyers to enter the housing market earlier than would otherwise be possible. For many first-time buyers in Ontario, this means buying years sooner than if they had to wait to reach a full 20% down payment on a $700,000 or $800,000 property. See the full range of mortgage services available to Ontario buyers at every down payment level.
Common Mistakes Buyers Make With CMHC Mortgage Insurance
Forgetting the PST on the Premium
The CMHC premium is added to your mortgage balance, which means you do not need cash on hand for the premium itself. However, the Ontario provincial sales tax on the premium (8%) must be paid at closing from your own funds. On a $15,000 premium, that is $1,200 in cash at closing that many buyers do not factor into their closing cost budget.
Not Comparing Lenders on Insured Mortgage Products
Because CMHC insurance rates are the same regardless of which insurer is used, some buyers assume insured mortgage rates are also standardized. They are not. Lenders price their insured mortgage products differently. Sebastian Skibinski compares insured mortgage options across 50+ lenders to find the most competitive product for each buyer’s situation. For buyers in Kitchener and Waterloo, where condo and townhouse purchases frequently fall into the insured mortgage range, this comparison often produces meaningful savings. Book a call to get a current lender comparison for your specific situation.
CMHC vs SAGEN vs Canada Guaranty: Is There a Difference?
All three approved mortgage insurers in Canada operate under the same federal rules and charge the same premium rates. From a cost perspective, there is no difference to the buyer. The practical difference lies in lender and property eligibility policies, which vary slightly between insurers.
CMHC is the federal Crown corporation and is the most widely used insurer. SAGEN and Canada Guaranty are private insurers that operate under the same regulatory framework. Your mortgage agent handles the insurer selection as part of the application process, matching your file to the insurer most likely to approve it under the best terms.
For a deeper comparison of insurer policies, visit the CMHC official website or the SAGEN mortgage insurance overview for current eligibility details.
Understanding Your CMHC Mortgage Insurance Puts You in Control
CMHC mortgage insurance is not a penalty for buying with less than 20% down. It is a structural component of Canada’s housing finance system that enables millions of buyers to purchase homes sooner and access competitive lending rates. Understanding what it costs, how it is calculated, and what it means for your application allows you to plan with clarity rather than get surprised at closing.
Sebastian Skibinski, Mortgage Agent Level 1 with over 10 years of experience in the financial industry and an award-winning background at the Bank of Montreal, operates under Miracle Financial (FSRA regulated) and works with first-time buyers across Ontario to model insured mortgage scenarios, compare lender options, and structure applications that reflect each buyer’s real situation.
Frequently Asked Questions About CMHC Mortgage Insurance
1. Is CMHC mortgage insurance the same as home insurance?
No. CMHC mortgage insurance and home insurance are completely different products. CMHC mortgage insurance protects the lender if you default on your mortgage. Home insurance protects your home and belongings against damage, theft, and liability. Both are typically required when you purchase a home, but they serve entirely different purposes and are purchased separately.
2. Can I get a refund on my CMHC premium if I sell my home early?
CMHC premiums are generally non-refundable once your mortgage is funded. If you sell your property and pay out your mortgage, the premium you paid remains applied to the insurer as compensation for the risk they assumed. There is no pro-rated refund based on how long you held the mortgage.
3. Does CMHC mortgage insurance affect my credit score?
The insurance itself does not affect your credit score. Your lender submits the mortgage application, which involves a credit inquiry, and the lender’s approval decision is the one that matters for your credit report. CMHC and the other insurers do their own underwriting review behind the scenes, but this does not generate a separate credit inquiry visible on your file.
4. Can I port my CMHC-insured mortgage to a new property?
Many lenders allow portability on insured mortgages, which means you can transfer your existing mortgage, including the remaining insurance coverage, to a new property when you move. If you need to increase your mortgage amount at porting, a top-up premium may apply on the additional amount. Visit the renewals and refinancing services page for guidance on porting and restructuring your insured mortgage when your situation changes.
5. What happens to my CMHC insurance if I refinance my mortgage?
If you refinance and your loan-to-value ratio remains below 80% (more than 20% equity), the refinanced mortgage is conventional and no new CMHC insurance is required. If you refinance and the resulting loan-to-value exceeds 80%, a new premium applies on the full refinanced amount. The Canada Mortgage and Housing Corporation provides further detail on how insurance applies to refinanced mortgages.
6. How does the mortgage stress test interact with CMHC insurance?
The mortgage stress test applies to all insured mortgage applications. Borrowers must qualify at the higher of the Bank of Canada’s 5-year benchmark rate or their contract rate plus 2%. This means your actual purchasing power may be lower than the raw approval number suggests. Work with a mortgage agent to run the qualification calculation before you begin your property search.
| Get Clear on Your Mortgage Insurance Before You Buy Call 647-831-7533 or book your free consultation at sebastianskibinski.com FSRA Licensed. No pressure. Operating under Miracle Financial. |
Key Takeaways
- Mortgage insurance is mandatory on any Canadian home purchase where the down payment is less than 20% of the purchase price.
- The insurance protects the lender, not the buyer. Its benefit to buyers is indirect: it enables access to A-lender rates with a smaller down payment.
- Premium rates in 2026 range from 2.80% (15% to 19.99% down) to 4.00% (under 10% down), calculated on the total insured mortgage amount.
- The premium is added to your mortgage balance. The Ontario PST on the premium (8%) is a cash payment due at closing.
- Insured mortgages are only available on properties priced below $1,500,000 and are subject to a maximum 25-year amortization for resale properties.
- All three approved insurers (CMHC, SAGEN, Canada Guaranty) charge the same premium rates but may have slightly different eligibility policies.
- Sebastian Skibinski (647-831-7533), Mortgage Agent Level 1, FSRA licensed under Miracle Financial, compares insured mortgage products across 50+ lenders to find the most competitive option for each buyer.
