The Spousal Buyout Insured Refinance — 95% LTV Program Mechanics Explained

The CMHC spousal buyout program carves out a single exception to the standard rule that refinances are capped at 80% LTV and are ineligible for default insurance. Under this program, a refinance to fund a court-ordered or separation-agreement-documented equity buyout can be insured up to 95% LTV. The insured cap increase is the entire benefit — it allows a retaining borrower to access equity they could not reach under a conventional refinance without a large cash injection.

The program does not modify the stress test, waive GDS/TDS ratios, or increase the borrower's qualifying income. Every dollar of new mortgage debt must still be supportable under B-20 Guideline stress-test mechanics at the greater of the contract rate plus 200 bps or 5.25%. Conflating the LTV lift with an income lift is the most common misunderstanding in spousal buyout files.

Before structuring a spousal buyout file, determine which constraint is actually the problem:

LTV-constrained: The retaining borrower's income qualifies for the full new mortgage amount, but the required mortgage exceeds 80% of appraised value. The spousal buyout program solves this directly — it lifts the ceiling to 95%.

Income-constrained: The required mortgage is within 95% LTV but the retaining borrower's income, stressed at the qualifying rate, does not support the payment. The program does not help here. Solutions include: (a) extending amortization to 30 years on the insured mortgage, which reduces the monthly payment and raises the qualifying ceiling by roughly 10-12%; (b) adding a co-signer or co-borrower; (c) negotiating a lower buyout price through an asset offset (e.g., the departing spouse retains a vehicle or RRSP in lieu of cash equity); or (d) the retaining borrower makes a partial cash payment from TFSA or RRSP savings to reduce the required mortgage.

Both constraints: The most complex files. Amortization extension is usually the first lever because it simultaneously helps income qualification and keeps the mortgage within the insured envelope.

CMHC requires that the buyout be supported by a signed separation agreement or court order that specifies the equity division. A verbal agreement or a letter of intent is not sufficient for underwriting. The agreement must identify the property, the departing spouse, and the equity amount being transferred.

In Ontario, the Family Law Act governs the equalization of net family property — the buyout price is typically derived from a formal equalization calculation, not simply half of appraised equity. Lenders will want to see the agreement reviewed by independent legal counsel for both parties (a requirement in most provinces to prevent duress claims). The appraisal must be an arm's-length AACI-designated appraisal ordered by the lender — not a realtor CMA or a prior purchase price.

Post the December 2024 insured mortgage cap increase to $1.5M, the spousal buyout program operates within the same premium schedule as standard high-ratio purchases. Premium tiers as of 2025-2026:

• LTV 80.01–85%: 2.80% of insured amount
• LTV 85.01–90%: 3.10%
• LTV 90.01–95%: 4.00%

The premium is added to the mortgage balance and amortized — it is not a cash cost at closing. For a $585,000 mortgage at 78% LTV, the applicable premium is 2.80% = $16,380, bringing the total insured balance to $601,380. Sagen and Canada Guaranty offer equivalent programs under their own spousal buyout product lines; the premium schedules are identical to CMHC's. The 30-year amortization option introduced in August 2024 applies to insured mortgages broadly, including spousal buyout refinances — this is a material change from the pre-2024 25-year cap.

The departing spouse must be removed from title as a condition of the refinance — the lender will not advance funds to a co-borrower who remains on title. This requires a transfer of title instrument registered at the provincial land registry, coordinated by the retaining borrower's real estate lawyer.

If the existing mortgage is registered as a collateral charge (common with TD, National Bank, and some credit unions), it cannot be transferred to a new lender without a full discharge and re-registration. Discharge penalties on a collateral charge can be significant if the existing mortgage is mid-term. The retaining borrower should confirm the charge type before assuming the refinance is a simple switch — a standard charge mortgage can be assigned to a new lender without discharge, which may reduce legal costs.

At current rate levels — 5-year fixed insured mortgages in the 4.79–5.25% range, stress-tested at 6.79–7.25% — the income constraint is the binding factor on most spousal buyout files where the retaining borrower is a single earner replacing a dual-income qualification. The 30-year amortization option is therefore not a marginal benefit; it is often the structural difference between a file that qualifies and one that does not.

Not all lenders offer the spousal buyout insured product. Monoline lenders (First National, MCAP, RMG) and most Schedule A banks participate, but some credit unions and smaller lenders do not have CMHC delegated underwriting authority for this product type. A broker with confirmed access to the full insured lender panel is essential — a branch that cannot originate the insured spousal buyout product will default to the 80% conventional refinance and tell the borrower they are short on equity.