MIC Financing in Canada: Warehouse Lines and Borrowing Base Facilities

Canada's Mortgage Investment Corporation (MIC) sector has grown substantially over the past decade, driven by tightened bank underwriting standards and surging demand for alternative mortgage products. For MIC operators, the ability to access institutional leverage — warehouse lines and credit facilities — is the difference between a subscale fund and a scaled lending platform.

This guide covers the structure, terms, and lender landscape for MIC financing in Canada, with particular focus on the sub-$75M AUM segment where institutional capital access has historically been most constrained.

Why MICs Use Leverage

The economic case for leverage is straightforward. A MIC deploying investor equity at a 10% mortgage yield earns a 10% return. The same MIC deploying equity plus 1:1 leverage (borrowed at 7%) earns approximately 13% on equity — the spread on the levered capital plus the full return on unlevered equity. At 2:1 leverage, equity returns approach 16–19% depending on the cost of the credit facility.

Beyond return enhancement, leverage increases the MIC's lending capacity without requiring proportional equity raises, creates a buffer for redemption requests, and allows the operator to maintain mortgage commitments without fully drawing investor equity.

The leverage math: A $30M MIC deploying at 10% yield with 1:1 leverage at 7% borrowing cost generates approximately $300K in additional annual income on $15M of borrowed capital. At scale, this compounds materially.

Types of MIC Financing Facilities

Warehouse Lines

A warehouse line is a revolving credit facility used to fund mortgages temporarily — typically between origination and either permanent financing or investor equity raise. Warehouse lenders advance against the pledged mortgage pool, usually at 70–85% of the outstanding principal balance. Once a warehouse line is funded, the MIC can close mortgages quickly and efficiently without waiting for equity subscriptions.

Portfolio Leverage Facilities

More common for established MICs is a portfolio leverage facility — a committed credit line secured against the MIC's entire mortgage portfolio. These facilities are structured as revolving lines, with availability calculated against an eligible borrowing base (typically the lower of a percentage of aggregate principal balance or a loan-to-value ratio applied to the underlying properties).

Typical Pricing by Facility Type

• Warehouse Line: 70–85% advance rate on mortgage balance · a spread over prime · Best for origination-stage MICs
• Portfolio Leverage: 65–80% of eligible pool · a tighter spread over prime · Best for established MICs
• Term Facility: 60–75% of appraised portfolio · fixed rates · Best for stabilized pools

The Lender Landscape for MIC Financing

Schedule I Banks

Canada's chartered banks provide MIC financing — but typically only above $75M in AUM, and for operators with demonstrated track records and institutional-grade reporting. Below this threshold, bank credit appetite is limited. federal development finance has historically been more accessible to smaller MIC operators.

Trust Companies and Schedule II Banks

Several Canadian trust companies and foreign bank subsidiaries are active MIC lenders in the $10M–$75M AUM range. These institutions have more flexible credit criteria than the Big Six and are more comfortable with the collateral structure of a mortgage pool.

Specialty Lenders

A small but growing cohort of specialty lenders focus exclusively on the private lending and MIC sector. These lenders understand MIC structures, are comfortable with shorter-duration mortgage collateral, and can often close facilities faster than regulated institutions. Pricing reflects the specialist nature — expect a wider spread over prime reflecting specialist risk for smaller MICs.

Key Structuring Issues for MIC Leverage

Eligible Mortgage Criteria

Lenders define eligible mortgages precisely. Common eligibility criteria include: first mortgage only, LTV at or below 75%, no mortgages in arrears or under power of sale, geographic concentration limits (typically no more than 30–40% in a single city or province), and minimum term remaining. Understanding these criteria before selecting a facility determines how much of your portfolio will actually be available as borrowing base.

Financial Covenants and Reporting

MIC leverage facilities typically require: monthly borrowing base certificates, quarterly portfolio roll-forwards, annual audited financial statements, minimum liquidity covenants, and portfolio performance metrics (arrears rate, average LTV). The reporting burden is real — ensure your operations infrastructure can support it before taking on leverage.

The Advisory Fee Economics

For MICs accessing institutional leverage for the first time, the economics of engaging a capital advisor are compelling. An advisor brings lender relationships, structuring expertise, and negotiating experience that most MIC operators lack. On a typical leverage facility, even a modest pricing improvement from a competitive process generates annual savings that materially exceed the advisory cost. More importantly, an advisor can access lenders that would otherwise be unavailable to a direct approach from an emerging MIC.