What Is Mortgage Default Insurance and Why Do You Need It?

If you're buying a home in Canada with a down payment of less than 20%, mortgage default insurance isn’t optional — it’s required. Many first-time buyers misunderstand what this insurance does, who it protects, and why it’s necessary. But default insurance plays a major role in helping Canadians access homeownership with smaller down payments and lower interest rates.

Here’s everything you need to know about what mortgage default insurance is, how it works, and why most buyers benefit from it — even if they don’t realize it.

What Is Mortgage Default Insurance?

Mortgage default insurance (also called CMHC insurance, or high-ratio mortgage insurance) protects the lender — not the borrower — in case the borrower fails to make mortgage payments.

It is required for:

• Down payments under 20%

• Owner-occupied homes under $1 million

• Most first-time buyers entering the market

Insurance is provided by one of three Canadian insurers:

• CMHC (Canada Mortgage and Housing Corporation)

• Sagen (formerly Genworth)

• Canada Guaranty

Why Do You Need Mortgage Default Insurance?

1. It Allows You to Buy a Home with a Small Down Payment

Without default insurance, lenders cannot legally offer mortgages with less than 20% down.
This insurance opens the door for buyers who have saved 5–15%.

2. It Reduces Lender Risk

By protecting lenders from losses, insurers make it possible for:

• Lower interest rates

• More flexible approval guidelines

• Longer amortization options (for some programs)

3. It Can Help You Qualify More Easily

Insured mortgages often have:

• Better rates than uninsured mortgages

• Lower risk premiums

• More lender options

This helps first-time buyers qualify even with moderate incomes.

4. It Supports Market Stability

Insured mortgages reduce financial risk across Canada’s lending system, helping prevent instability during economic downturns.

How Much Does Mortgage Default Insurance Cost?

The premium is a percentage of your mortgage amount and depends on your down payment.

Premium Rates (2025)

• 5% down: 4.00%

• 10% down: 3.10%

• 15% down: 2.80%

The premium is added to your mortgage — meaning you don’t pay it upfront.

Example:

Purchase price: $600,000
Down payment: 5% ($30,000)
Mortgage amount: $570,000
Premium: 4% = $22,800 added to the mortgage

Borrowed total = $592,800

Who Needs Mortgage Default Insurance?

Required when:

• Down payment <20%

• Property is under $1M

• Property will be owner-occupied

NOT available for:

• Homes over $1,000,000

• Most rental properties

• Non-owner-occupied homes

• Some unconventional builds

Benefits of Insured Mortgages

✔ Lower interest rates

Insured mortgages usually have the lowest rates in the market.

✔ Easier qualification

Lenders see insured mortgages as lower risk.

✔ Access to homeownership sooner

Buyers don’t need to wait to save 20%.

✔ Supported by all major lenders

More lender choice = better options.

Downsides of Mortgage Default Insurance

❌ Adds cost to the mortgage

Premiums increase your total loan amount.

❌ Not available for homes over $1M

Buyers must have a full 20% down.

❌ Does NOT protect the borrower

It protects the lender—NOT your payments.

Is Mortgage Default Insurance Worth It?

Yes — for most first-time buyers.

It allows you to:

✔ Buy sooner
✔ Buy with less down
✔ Access the best rates
✔ Build equity immediately

The cost of the premium is often outweighed by the financial benefits of entering the market earlier.

Final Thoughts

Mortgage default insurance is one of the most important — and misunderstood — parts of the Canadian mortgage system. It protects lenders, stabilizes the market, and gives buyers the ability to purchase a home with as little as 5% down. With the right planning and mortgage strategy, insured mortgages help thousands of Canadians become homeowners every year.

If you want, I can turn this into a RateShop-branded infographic, Instagram carousel, or lead-gen landing page for first-time buyers.