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For informational purposes only. Not financial, legal, or professional advice. Consult a licensed mortgage professional before making decisions. See full disclaimer

FAQ Library
Refinance•Verified 2026-02-18

What are the key qualification criteria for a CMHC-insured refinance?

To qualify for a CMHC-insured refinance loan, you need to meet specific creditworthiness and debt service requirements.

Key Points

  • You'll need a credit score of at least 600 to qualify.

  • Your mortgage payments and other debts can't be more than 39% (GDS) or 44% (TDS) of your income.

  • When calculating if you qualify, lenders use either your mortgage interest rate plus 2%, or 5.25%, whichever is higher.

  • If you don't have a credit history, there may be other ways to prove you can handle a mortgage.

  • The lender will carefully review the value of your home to make sure it supports your refinance.

Need a Deeper Breakdown?

Read the full research guide this FAQ was derived from for more context and strategy.

Technical Research Verification

Our systems synchronized 4 data points and regulatory frameworks to verify this technical brief.

Read the deeper guide · Refinance

2026 Canadian Mortgage Refinancing for Renovations: LTV Limits, Stress Test Rules & CMHC Options

Related Questions

How do GDS and TDS ratios affect my refinancing options?

GDS (Gross Debt Service) and TDS (Total Debt Service) ratios are critical affordability indicators that financial institutions use to determine your eligibility for refinancing.

What is the Loan-to-Value (LTV) ratio, and how does it impact my ability to refinance?

The Loan-to-Value (LTV) ratio plays a critical role in the refinancing process.

How does OSFI's Guideline B-20 affect refinancing?

OSFI's Guideline B-20 establishes the benchmark for residential mortgage underwriting practices that federally regulated financial institutions (FRFIs) must adhere to.

What is a 'straight switch,' and how does it impact refinancing at renewal?

A "straight switch" refers to the process of transferring an existing uninsured mortgage to a new institution when it's up for renewal, without increasing the remaining amortization period or the loan amount.

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CriteriaRequirement
Minimum Credit Score600 for at least one borrower or guarantor.
GDS ThresholdMaximum 39%.
TDS ThresholdMaximum 44%.
Interest Rate CalculationContract rate + 2% or 5.25%, whichever is greater, for GDS/TDS calculations.
Alternative Credit HistoryCMHC may consider alternative methods for borrowers without a credit history.
Valuation expectationsFRFIs should have clear and transparent property valuation policies and procedures including a framework for critically reviewing and, where appropriate, effectively challenging the assumptions and methodologies underlying valuations and property appraisals.