CMHC insurance calculator

Calculate your CMHC mortgage default insurance premium by down payment, see the premium rate table and how it's added to your mortgage.

Updated October 7, 2026

How is it calculated?

Default insurance is required with less than 20% down. The premium is a percentage of the loan, set by loan-to-value, and is added to your mortgage. A 30-year amortization adds 0.20%. In Ontario, Quebec and Saskatchewan, provincial sales tax on the premium is paid at closing.

CMHC premiums by loan-to-value
Loan-to-valuePremium
Up to 65%0.60%
65.01%–75%1.70%
75.01%–80%2.40%
80.01%–85%2.80%
85.01%–90%3.10%
90.01%–95%4.00%

Purchase premiums for standard down payments. Source: CMHC.

What should I do with the result?

Use it to set a budget or a target rate, then let lenders bid on your actual mortgage. Bids include rate, penalty method, prepayment and fees, so you can compare the full cost.

Frequently asked questions

Can I avoid CMHC insurance?

Put 20% or more down.

Is the CMHC premium refundable?

No, but it can be portable if you move your mortgage to a new home.

MBWritten by the MortgageBids.ca editorial team. Last updated October 7, 2026. General information only; your lender confirms terms for your file.

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