Key takeaways
- →A MIC's special tax status under the Income Tax Act comes with real structural conditions — at least 20 shareholders, no shareholder holding more than 25% of capital, and at least half its assets in residential mortgages or insured cash — and those conditions shape how it has to deploy capital.
- →Most MICs route a file through an investment or loan committee rather than a single underwriter, though smaller or renewal deals are often pre-delegated to move faster.
- →Equity position and exit strategy typically carry more weight in a MIC's review than a full GDS/TDS calculation, but responsible MICs still confirm the borrower's ability to service the debt — a regulator finding that many private mortgage files lacked adequate suitability documentation has pushed the sector toward tighter records, not looser ones.
- →A MIC's fund mechanics — how much capital it has available to deploy at a given time — can affect turnaround as much as the file itself, and a larger deal sometimes gets syndicated across more than one MIC.
A Mortgage Investment Corporation isn't underwriting the way a bank does, and the difference isn't just appetite — it's structural. A MIC exists as a special tax vehicle under the Income Tax Act specifically so it can flow mortgage interest income to its shareholders without paying corporate tax on it first, and that status comes with real conditions on how the corporation has to be built and how it has to deploy its capital.
Here's what that structure is, how committee review actually works on a MIC file, what a MIC is really underwriting for once equity takes the lead over ratios, and how fund mechanics — not just the file — can affect how fast a deal actually closes.
01 · What is a MIC, and why does its structure change how it underwrites?
Under section 130.1 of the Income Tax Act, a Mortgage Investment Corporation needs at least 20 shareholders, no single shareholder holding more than 25% of its capital, and at least half its assets in residential mortgages or cash held at a CDIC-member institution. In exchange for meeting those conditions, the MIC deducts the dividends it pays shareholders from its own taxable income, so the interest income effectively flows through and is taxed only once, at the shareholder level.
The practical effect is that a MIC has to keep its capital working — sitting on uninvested cash defeats the purpose of the structure — which pushes MICs toward faster, more flexible underwriting decisions than a bank, without necessarily lowering the bar on documentation.
The 25% single-shareholder cap matters for a different reason too: it forces a MIC to actually be a pooled vehicle rather than one or two investors calling every decision informally. In practice, that means a broker submitting to a well-run MIC is dealing with a real underwriting process, not a handshake between the borrower and a single private lender wearing a corporate name — the committee structure covered next exists partly because the tax rules require genuine diversification of ownership.
02 · How does a file actually get reviewed inside a MIC?
| Element | What it means for the broker's file |
|---|---|
| Investment or loan committee vote | Larger deals or higher-LTV files often need a committee sign-off rather than a single underwriter's approval |
| Delegated authority thresholds | Smaller deals, or renewals of an existing MIC mortgage, are frequently pre-delegated to move faster without a full committee cycle |
| Meeting cadence | Committees that meet weekly, not daily, can add a real week to a file's timeline if the submission misses the cycle |
Knowing a MIC's meeting cadence ahead of time changes how a broker plans a closing date. A file submitted the day after a weekly committee meeting can lose most of a week waiting for the next one, while the same file submitted two days earlier might have cleared before the deadline it's now at risk of missing — a scheduling detail that has nothing to do with the deal's quality but everything to do with when the broker chose to submit it.
03 · What is a MIC actually assessing when it reviews a file?
Loan-to-value and the property's marketability — how easily it could be sold if the loan ever needed to be recovered — typically carry more weight in a MIC's decision than a full GDS/TDS calculation does. Exit strategy matters too: a MIC wants a credible answer for how the borrower gets to a refinance, a sale, or a return to conventional financing before the term is up.
That said, “equity-based” doesn't mean income-blind. Ontario's regulator reviewed a sample of private mortgage transactions and found roughly two-thirds had missing, incomplete, or inconsistent documentation of the required suitability assessment — a finding that has pushed the sector toward tighter file documentation, not looser standards. A submission built the way the submission cover note template lays out works just as well for a MIC file as it does for an A-lender one.
Property marketability is a more subjective assessment than it sounds, and it's where a MIC's local knowledge often shows. A property in a thin, slow-moving rural market can carry a strong appraised value on paper and still be a hard sell in a hurry if the loan ever needed to be recovered, which is exactly the scenario a MIC's committee is trying to price for — a factor a straightforward LTV calculation alone doesn't fully capture.
Submissions built for committee review, not just a single underwriter
MIC files need a different kind of package — equity story first.
Treadstone's fulfillment associates package private and MIC files with the documentation regulators are actually checking for, and track fund-availability timelines separately from the underwriting itself.
04 · What besides the file itself can affect how fast a MIC funds a deal?
How much capital a MIC has available to deploy at a given moment — shaped by its own redemption cycle and how recently it's raised new capital — can matter as much as the file's quality. A MIC that's fully deployed may take longer to fund a new file, or route part of a larger deal to a co-lending arrangement with another MIC, than one sitting on fresh capital.
That variability is one reason equity-based files often need more active tracking than a conventional A-lender deal. It connects directly to how equity lending programs work more broadly across private and alternative lenders. Brokers running these files through Treadstone's fulfillment associates get that tracking handled without it falling on the agent to chase.
Building a relationship with more than one MIC, rather than defaulting to a single go-to fund, gives a broker somewhere to route a deal when the first choice happens to be between capital cycles. It's a small piece of business development that pays off specifically on the files where speed matters most — the equity-based deals where a client is often working against a tighter timeline than a conventional purchase ever presents.
Frequently asked questions
This article is general information to help you scale — not a substitute for tailored advice on your specific business, licensing, or compliance obligations. All figures are illustrative examples for planning purposes; actual costs vary by province, market, and brokerage.

