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Mortgage Default Insurance: Complete CMHC, Sagen & Canada Guaranty Guide

November 23, 2025
9 min read
Mortgage Default Insurance: Complete CMHC, Sagen & Canada Guaranty Guide - Mortgage Tips blog post featured image

Understanding Mortgage Default Insurance

Mortgage default insurance (often called CMHC insurance) is required when you have less than 20% down payment.

What Is Mortgage Default Insurance?

Purpose:
Protects the LENDER (not you) if you default on your mortgage. Allows lenders to offer mortgages with lower down payments.

The Three Providers

Provider Market Share Notes
CMHC ~50% Crown corporation, largest
Sagen (formerly Genworth) ~35% Private, competitive
Canada Guaranty ~15% Private, growing

Premium Rates

Down Payment LTV Premium Rate
5% 95% 4.00%
10% 90% 3.10%
15% 85% 2.80%
20%+ 80% or less Not required

Premium Calculation Example:

  • Home Price: $500,000
  • Down Payment: $25,000 (5%)
  • Mortgage: $475,000
  • Premium: $475,000 Γ— 4.00% = $19,000

When Insurance Is Required

Must Be Insured:

  • Down payment less than 20%
  • Maximum 25-year amortization
  • Purchase price under $1 million

Advantages of Insured Mortgages

Better Interest Rates:
Insured mortgages often 0.10-0.25% lower than conventional.

Lower Down Payment:
Access homeownership sooner with 5-10% down.

Frequently Asked Questions

Can I choose my mortgage insurer?

Generally no, the lender decides. All three have similar premiums.

Is the premium tax-deductible?

For personal residences, no. For rental properties, it may be deductible.

Does mortgage insurance cover me if I die?

No, this is completely different from mortgage life insurance.

Calculate your mortgage with insurance costs.

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