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NHA Mortgage-Backed Securities (NHA MBS) are securities created under Canada’s National Housing Act, backed by pools of insured residential mortgages and guaranteed by CMHC. They let a lender sell a pool of insured mortgages to investors while continuing to service the underlying loans, turning mortgage assets into tradeable securities.
Rather than holding every funded mortgage on its own balance sheet, a lender can pool eligible insured mortgages and issue NHA MBS backed by that pool, selling the securities to investors. This is a core part of mortgage securitization in Canada and a major source of funding for monoline and other lenders that do not take deposits.
Because NHA MBS carry a CMHC guarantee on the underlying insured mortgages, they are attractive to institutional investors, which in turn gives lenders a reliable channel for raising the funds they use to originate new mortgages.
CMHC administers the program: CMHC sets eligibility rules for which insured mortgages can be pooled into NHA MBS and guarantees the timely payment of principal and interest to investors.
Feeds the broker channel: monoline lenders that rely heavily on securitization, including NHA MBS, are a major funding source behind many mortgages originated through the broker channel.
Only eligible insured mortgages qualify: mortgages must meet CMHC’s insurability and program criteria to be pooled into an NHA MBS issuance — not every mortgage a lender funds is eligible.
Distinct from portfolio insurance: NHA MBS is a securitization vehicle built on already-insured mortgages; it is a different mechanism from a lender separately purchasing portfolio insurance on uninsured loans.
Definitions reflect Canadian federal and provincial rules as of the “Updated” date above. Not advice for any specific file.
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