- Long-form amalgamation is the general-purpose route, available for combining any two or more corporations under the OBCA, regardless of their ownership relationship to each other.
- Short-form amalgamation is available only in narrower circumstances involving wholly-owned corporate relationships.
Ontario's Business Corporations Act recognizes two distinct paths to amalgamate corporations: a full procedure that applies by default, and a simplified procedure available only in specific corporate-ownership situations. Knowing which one applies to your situation — before you start drafting — saves real time and legal cost.
This article walks through both procedures and the test for which one you can use.
Long-Form Amalgamation: The Default Procedure
Long-form amalgamation is the general-purpose route, available for combining any two or more corporations under the OBCA, regardless of their ownership relationship to each other. It generally involves:
- Directors of each amalgamating corporation approving a detailed amalgamation agreement that sets out the terms of the combination, including what each corporation's shareholders will receive
- Shareholder approval of the amalgamation by each amalgamating corporation, generally by special resolution
- Addressing any dissenting shareholders who oppose the amalgamation and wish to be paid fair value instead
- Filing articles of amalgamation to bring the new combined corporation into existence
Because it applies to any combination of corporations — related or unrelated — long-form amalgamation is the procedure used whenever the simplified route isn't available.
Short-Form Amalgamation: The Simplified Route
Short-form amalgamation is available only in narrower circumstances involving wholly-owned corporate relationships. There are two recognized versions:
Vertical short-form amalgamation
Available where a holding corporation amalgamates with one or more subsidiaries that it wholly owns. Because the parent already owns 100% of the subsidiary's shares, there is no need to negotiate what outside shareholders receive — there are none.
Horizontal short-form amalgamation
Available where two or more corporations, each wholly owned by the same holding corporation, amalgamate with each other. Again, because the same parent owns all the shares of every amalgamating corporation, there is no separate shareholder group whose approval or consideration needs to be worked out.
What short-form skips
Where it's available, the short-form procedure generally allows the amalgamation to proceed with directors' resolutions from the amalgamating corporations, without the full shareholder special-resolution process and without needing to draft the more detailed terms a long-form amalgamation agreement requires — because there's no outside shareholder group whose interests need to be negotiated or protected.
Comparing the Two Procedures
| Long-Form Amalgamation | Short-Form Amalgamation | |
|---|---|---|
| Availability | Any combination of corporations | Only wholly-owned parent/subsidiary or wholly-owned sister companies |
| Approval needed | Shareholder special resolution at each corporation | Directors' resolutions generally suffice |
| Amalgamation agreement | Detailed agreement covering consideration to shareholders | Simplified — no outside shareholders to negotiate terms with |
| Dissent rights | Available to shareholders who oppose the amalgamation | Generally not a live issue, since there's no outside shareholder group |
| Typical use case | Combining previously unrelated businesses, or any deal involving outside shareholders on either side | Cleaning up a corporate group after a share purchase; combining wholly-owned subsidiaries |
How to Tell Which Procedure You Can Use
Before assuming the simplified route is available, confirm:
- Is one corporation the sole shareholder of the other (vertical), or do the same corporation and only that corporation own 100% of each amalgamating corporation (horizontal)?
- Are there no outside minority shareholders anywhere in the structure who would otherwise need to approve the deal or have dissent rights?
- Has the ownership structure been confirmed against the actual share register and minute book — not just assumed from an organizational chart, which can be out of date?
If any of those conditions isn't met, the long-form procedure applies, even if the corporations are closely related in a general commercial sense.
Why This Matters for Deal Timing
Choosing the wrong procedure — or assuming a short-form route is available without confirming eligibility — can create problems that surface only when the articles of amalgamation are filed or challenged later. Confirming eligibility for short-form treatment early, based on an accurate review of the share register, avoids having to unwind and restart the process.
Frequently asked questions
If my company owns 90% of a subsidiary, can I still use short-form amalgamation?
Short-form treatment generally requires full (100%) ownership of the subsidiary by the parent, or full common ownership of sister corporations by the same parent. Partial ownership below that generally means the long-form procedure applies, since outside shareholders exist whose interests need to be addressed.
Does short-form amalgamation still require filing articles of amalgamation?
Yes. Both procedures result in a filing to bring the amalgamated corporation into existence — the difference is in the internal approval process leading up to that filing, not in whether a filing happens at all.
Can a short-form amalgamation still trigger contract or lease consent issues?
Yes. Third-party contracts, leases, and licences may still require notice or consent on an amalgamation regardless of which internal procedure was used to approve it. The short-form/long-form distinction is about internal corporate approvals, not about external counterparties.
Is short-form amalgamation available under the federal CBCA too?
The federal Canada Business Corporations Act has broadly parallel amalgamation mechanics to the OBCA for federally incorporated companies, including simplified procedures for wholly-owned corporate relationships. The specific requirements should be confirmed against the applicable statute for the corporations actually involved.
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