CMHC vs. Sagen vs. Canada Guaranty: Comparing Canada's Mortgage Insurers

CMHC, Sagen, and Canada Guaranty are the three companies approved to provide mortgage default insurance in Canada — the coverage a lender requires whenever a homebuyer's down payment is below 20%. All three exist for the same regulatory purpose, but they aren't identical: one is a federal Crown corporation, and the other two are private insurers, each running its own underwriting programs for situations a standard file doesn't fit neatly.

This guide compares what each insurer actually does, where the real differences show up, who actually decides which insurer covers a given mortgage, and what Ontario homebuyers putting down less than 20% should understand before assuming "CMHC" is the only name that matters.

Quick answer: CMHC, Sagen, and Canada Guaranty all provide mortgage default insurance under the same federal framework, and all three price it using a schedule reviewed by the government — so premium cost is rarely what actually separates them. CMHC is the only one of the three that insures multi-unit properties with five or more units. Sagen and Canada Guaranty are private insurers, and each runs its own flexible programs for situations like self-employment, newcomer income, or a borrowed down payment. In nearly every case, the homebuyer doesn't choose the insurer — the lender does, based on the file.

Below: what mortgage default insurance actually covers, a side-by-side look at all three insurers, where they genuinely differ, how a lender picks between them, the Ontario picture, five mistakes to avoid, and the questions homebuyers ask most when an unfamiliar insurer's name shows up on their mortgage documents.

Key Takeaways

• CMHC, Sagen, and Canada Guaranty are the only three companies approved to provide mortgage default insurance in Canada, and all three price it under the same federal framework — so cost is rarely the deciding factor between them.
• CMHC is a federal Crown corporation and, according to its own professional site, the only one of the three insurers that covers multi-unit properties with five or more units.
• Sagen and Canada Guaranty are private insurers, each running flexible programs for situations like self-employment, newcomer income, or a borrowed down payment — Sagen has been operating for over 35 years, Canada Guaranty since 2010.
• The lender — not the homebuyer — decides which of the three insurers reviews a mortgage file, which is why a borrower typically can't simply request a specific insurer.
• Homebuyers across Scarborough, Richmond Hill, North York, Pickering, Ajax, and Ottawa run into all three insurers regularly, since most Ontario lenders work with more than one.
• A licensed Ontario mortgage broker can flag which insurer's program is more likely to fit a specific file — self-employed, newcomer, or lower credit — before an application is submitted.

What Mortgage Default Insurance Actually Is (and Why Three Companies Provide It)

Mortgage default insurance is coverage that protects the lender, not the homebuyer, if a borrower stops making mortgage payments — it's required whenever a purchase closes with less than 20% down.

Definition moment: A high-ratio mortgage (the technical term for a mortgage where the down payment is below 20% of the purchase price) legally requires default insurance before a federally regulated lender can fund it. The insurance premium is added to the mortgage and repaid over time — it does not protect the buyer if they run into financial trouble.

CMHC (Canada Mortgage and Housing Corporation) describes itself as Canada's first mortgage loan insurance provider, with more than 70 years of experience under the National Housing Act. Sagen and Canada Guaranty were later approved to compete alongside CMHC, which is part of why many Canadians still say "CMHC insurance" as shorthand even when a different insurer actually covers their file.

That habit of assuming every high-ratio mortgage is "CMHC insured" is one of the most common points of confusion homebuyers bring to a mortgage broker — and it's worth clearing up before comparing the three insurers directly.

Bottom line: Default insurance is a lender-protection product required by federal rules, not a single-company product — CMHC, Sagen, and Canada Guaranty all provide it, and which one ends up on a given file depends on the lender, not a name the buyer picked.

CMHC, Sagen, and Canada Guaranty Side by Side

The difference between CMHC, Sagen, and Canada Guaranty comes down to ownership and program flexibility, not the basic coverage — all three insure the same type of high-ratio mortgage.

A common point of confusion: buyers assume the insurer's name affects their rate or their monthly payment in some direct way. It usually doesn't — the lender sets the mortgage terms, and the insurer's role is approving the file and covering the lender's risk, sitting mostly behind the scenes.

For illustration only, not a comparison lendsimpl is claiming applies to every file: a self-employed buyer with strong bank statements but limited traditional income documentation might be a better fit for a private insurer's flexible program than a standard file — while a buyer purchasing a small apartment building would need CMHC specifically, since it's the only one of the three that covers that property type. Which program actually fits depends on the full file, not a single detail.

Where the Three Insurers Actually Differ: Programs, Not Price

CMHC vs. Sagen vs. Canada Guaranty is less a pricing decision than a programs decision — since all three price default insurance on a schedule reviewed by the federal government, the real differences show up in underwriting flexibility.

CMHC's advantage is scope — it's the only insurer of the three approved for multi-unit properties with five or more units, and it has the longest track record of any Canadian mortgage insurer. Sagen and Canada Guaranty compete instead on flexibility: Sagen's New to Canada Program and Canada Guaranty's Maple Leaf Advantage both target newcomers with limited Canadian credit history, while Canada Guaranty's Low Doc Advantage and Sagen's broader self-employed underwriting both aim at borrowers whose income doesn't fit a standard T4 file.

None of this guarantees approval through any specific insurer — every file is still assessed individually on income, credit, the property itself, and the lender's own criteria, and approval depends on that full picture, not on picking a particular insurer's name.

For the full picture of what CMHC coverage actually costs and how it's calculated, see our guide to how CMHC mortgage insurance works in Canada.

If a self-employed income situation is part of what's making a file harder to place, our guide to qualifying for a mortgage when you're self-employed walks through what lenders and insurers actually look at.

Bottom line: Choosing between CMHC, Sagen, and Canada Guaranty isn't really a choice most buyers make directly — it's a fit question the lender and, ideally, a mortgage broker work through based on the borrower's actual income, credit, and property type.

How a Lender Chooses an Insurer — Step by Step

Picking a mortgage insurer isn't a form a homebuyer fills out — it's a decision the lender makes behind the scenes, based on which insurer's program best matches the file being submitted.

1. The lender reviews the borrower's income type, credit history, down payment source, and the property being purchased.
2. Based on that file, the lender decides which insurer to submit the application to — CMHC, Sagen, or Canada Guaranty — often based on which one's programs best fit an unusual detail in the file.
3. For a standard file with strong income and credit, most lenders can submit to any of the three, since the base coverage and pricing framework are similar.
4. For a non-standard file — self-employed income, newcomer credit history, a borrowed down payment, or a multi-unit property — the lender (or a broker working on the borrower's behalf) matches the file to the insurer whose specific program is built for that situation.
5. The insurer reviews the full file and approves or declines coverage; approval depends on income, credit, equity, property type, and documentation — never guaranteed by any insurer or lender in advance.

What This Means for Ontario Homebuyers

Ontario homebuyers with less than 20% down run into all three insurers regularly, since most lenders active in the province work with more than one of them.

Homebuyers across Scarborough, Richmond Hill, North York, Pickering, Ajax, and Ottawa bring lendsimpl the same question when they see "Sagen" or "Canada Guaranty" on their mortgage paperwork for the first time: does this change my mortgage, and did I do something wrong? Usually neither — it simply reflects which insurer's program best matched the file that lender submitted. In a competitive GTA market where closing timelines are often tight, understanding this ahead of time avoids an unnecessary scare late in the process.

Bottom line: Which insurer appears on an Ontario mortgage is a lender decision, not a red flag — lendsimpl is a licensed Ontario mortgage brokerage (FSRA #13763) that helps homebuyers across the province understand what's actually on their file before they sign.

5 Mistakes to Avoid When Comparing Mortgage Insurers

These mistakes come up often when homebuyers assume mortgage default insurance works the same way as shopping for a rate — it's a different kind of comparison.

1. Assuming you can request a specific insurer. In most cases, the lender decides which insurer reviews the file, not the buyer.
2. Assuming a different insurer's name means a worse deal. All three price default insurance under the same federal framework — the name on the paperwork doesn't by itself signal a worse mortgage.
3. Not mentioning self-employment, newcomer status, or a borrowed down payment early. These details are exactly what determine whether a flexible program from Sagen or Canada Guaranty might fit better than a standard file.
4. Assuming any lender can insure a 5+ unit property the same way as a house. CMHC is the only one of the three that covers multi-unit buildings at that size.
5. Comparing insurers instead of comparing lenders. The lender sets the mortgage terms; the insurer's role is approving coverage — most of the actual comparison shopping should focus on lenders, not insurers.

Useful Resources for Ontario Homebuyers

See the full breakdown of down payment rules in Canada if you're still deciding how much to put down.

Read our complete first-time buyer's guide for Toronto for the fuller picture of financing a purchase.

See our guide to buying a home in Canada for what pre-approval actually involves.

Talk to a licensed Ontario mortgage broker before assuming a standard file is your only option.

Frequently Asked Questions — CMHC vs. Sagen vs. Canada Guaranty

What's the actual difference between CMHC, Sagen, and Canada Guaranty?

CMHC is a federal Crown corporation and the only one of the three that insures multi-unit properties with five or more units. Sagen and Canada Guaranty are private insurers that compete mainly on flexible underwriting programs — for self-employed borrowers, newcomers to Canada, and borrowed down payments — rather than on price, since all three follow the same federal premium framework.

Can I choose which mortgage insurer covers my mortgage?

Usually not directly. The lender reviewing your file decides which insurer to submit the application to, based on which one's program best fits your income type, credit history, and the property you're buying. A mortgage broker can influence this indirectly by matching you to a lender that works well with the right insurer.

Do CMHC, Sagen, and Canada Guaranty charge different premiums?

All three price mortgage default insurance using a schedule reviewed by the federal government, so premium cost is rarely the deciding factor between them. The bigger differences show up in which flexible programs each insurer offers for non-standard files, not in the base pricing structure.

Which insurer is best for self-employed or newcomer borrowers?

Sagen and Canada Guaranty both run programs aimed at these situations — Sagen's New to Canada Program and Canada Guaranty's Maple Leaf Advantage and Low Doc Advantage among them. Which one actually fits depends on the specific file, so this is worth discussing with a mortgage broker rather than assuming in advance.

Is CMHC insurance different because it's government-owned?

CMHC is a federal Crown corporation, while Sagen and Canada Guaranty are private companies — but for a typical homebuyer, the coverage itself works the same way under all three. CMHC's main practical difference is being the only one of the three approved to insure multi-unit properties with five or more units.

Should I talk to a mortgage broker about which insurer fits my file?

It's a good idea, especially if your income doesn't fit a standard T4 file, you're newer to Canada, or you're buying a multi-unit property. A broker can match you to a lender whose insurer relationships fit your situation. lendsimpl is a licensed Ontario mortgage brokerage, FSRA #13763.

Disclaimer

This article is for general educational purposes only and should not be taken as financial, legal, or mortgage advice. Mortgage options, rates, approvals, and lender requirements can vary based on borrower profile, property details, credit history, income, equity, documentation, and current market conditions. Speak with a licensed mortgage professional before making a mortgage decision. lendsimpl is a licensed mortgage brokerage in Ontario (FSRA #13763).