A Canadian energy company is finalising a joint venture with a US-incorporated partner. The deal is nearly complete. Then the compliance team runs an ownership trace. One investor in the US entity holds a significant stake. That investor appears on an OFAC list. Simultaneously, a separate investor in the same vehicle is flagged under Canada's autonomous sanctions regime. Two regimes. Two tests. One transaction at risk. What governs, and who is blocked?
The 50 percent rule and ownership analysis under OFAC and Canada differ in ways that matter operationally. OFAC applies a mechanical aggregation rule: an entity is treated as blocked when listed persons own 50 percent or more in aggregate, directly or indirectly. Canada's regime, administered by Global Affairs Canada, uses a statutory control test that looks beyond bare ownership percentages to functional influence over the entity. A business operating across both jurisdictions must satisfy both tests simultaneously, and the stricter prohibition governs each step.
This analysis sets out the governing authority for each test, the precise points of divergence, the risk flags that practitioners most often encounter, and the practical steps a cross-border business should take before a transaction closes or a new counterparty relationship begins. As of July 2026, each regime remains independently active and separately enforced.
What authority governs each test, and why does the legal basis matter?
OFAC's ownership analysis derives from guidance issued under the International Emergency Economic Powers Act (IEEPA). The test is non-statutory in the sense that it is not codified in a single legislative provision; instead, OFAC has articulated it through published guidance that practitioners treat as binding in effect. The legal basis matters because it determines the regulator's discretion to update the test without primary legislation. OFAC has revised its guidance before, and it can do so again at pace.
Canada's autonomous sanctions regime operates under the Special Economic Measures Act (SEMA), administered by the sanctions unit within Global Affairs Canada. SEMA is primary legislation. The control concept embedded in Canadian sanctions regulations has a statutory foundation, meaning any material change to its scope requires a regulatory or legislative amendment. In our practice, clients crossing the US–Canada axis frequently underestimate that difference: OFAC's guidance can shift faster than a Canadian regulatory amendment, creating a period of genuine divergence in operative tests.
The UN Security Council Consolidated List is a third layer. Any entity or individual listed there triggers obligations for both OFAC-regulated persons and Canadian-regulated persons, independently of the ownership tests. A UN listing generally maps into both regimes automatically, though the precise implementation timing can differ. Cross-border businesses should not assume that a UN delisting removes the domestic prohibition without verifying the implementing jurisdiction's position.
The position above covers the standard framing. Your facts – the sector, the ownership structure, the counterparty's jurisdictional footprint, and the specific lists in play – can shift the analysis significantly. For a confidential review of your exposure under OFAC or the Canadian regime, contact Calder & Vance at info@caldervance.com.
How does OFAC's 50 percent rule work in practice?
The OFAC rule treats any entity as blocked when one or more persons on the SDN List (OFAC's list of Specially Designated Nationals and blocked persons) own it 50 percent or more in the aggregate, directly or indirectly. The test is purely arithmetic at its core. Management, operational control, and day-to-day direction are irrelevant to this determination. Two listed persons each holding twenty-six percent of a target entity reach the threshold together; one listed person holding forty-nine percent does not.
Indirect ownership is where the analysis becomes intricate. OFAC traces ownership through the chain. If a listed person owns seventy percent of an intermediate holding company, OFAC treats that intermediate company as blocked. The blocked intermediate's stake in a subsidiary is then counted toward the fifty percent test at the subsidiary level. In our experience, compliance teams working from a cap table alone – without a full legal-entity map – routinely miss indirect holdings that cross the line at two or three layers of remove.
Programme-specific designations add a further layer. OFAC administers multiple sanctions programmes, each with its own designated list, and the SDN List is not the only list that triggers the aggregation test. Secondary sanctions risk arises where a non-US entity transacts with an SDN-adjacent counterparty even if that counterparty would not itself be blocked under US domestic rules. Compliance counsel working on cross-border transactions must distinguish between primary and secondary exposure – the consequences differ substantially.
The rule also covers property interests beyond equity. Debt instruments, warrants, convertible instruments, and certain contractual rights can constitute ownership for this purpose. A compliance review that screens only common shares misses a meaningful part of the picture. In a recent matter, a financial institution acting as a lender reviewed its loan book and identified that one facility included a warrant exercisable for more than fifty percent of the borrower. The borrower's shareholder structure then revealed a listed investor. Treating the warrant as a potential equity interest triggered a re-evaluation of the entire exposure. The matter required an assessment of whether the position constituted blocked property and a review of reporting obligations. An early review preserved options that would have narrowed with time.
How does Canada's control test differ from the OFAC aggregation rule?
Canada's approach under SEMA and its implementing regulations does not rest on a single numeric threshold. The control test asks whether a listed person controls an entity through any means – whether by voting rights, contractual rights, the ability to appoint a majority of the board, or any other mechanism that gives practical authority over the entity's decisions. Ownership percentage is one indicator of control, but it is neither necessary nor sufficient on its own.
This is a structural divergence. Under OFAC, an entity with fifty-one percent listed ownership is blocked; an entity with forty-nine percent listed ownership is not blocked under the ownership rule (though other rules may apply). The line is the percentage. Under the Canadian test, an entity with forty-nine percent listed ownership could still be caught if the listed person also holds board appointment rights, veto powers over material decisions, or exclusive contractual relationships that amount to functional control. Conversely, a listed person nominally holding fifty-one percent of an entity might be found not to exercise control in fact if governance documents vest real authority elsewhere – though Canadian practitioners treat that conclusion with appropriate caution.
In our cross-border practice, we regularly advise businesses that the Canadian control test is both broader and more interpretively demanding than the OFAC rule. It requires a qualitative assessment of governance documents, shareholders' agreements, and the practical conduct of the entity. That assessment takes time and cannot be completed by a screening tool alone. Where OFAC compliance can be run as a semi-automated check for standard ownership structures, the Canadian analysis almost always requires a legal review of the underlying documents.
Does your counterparty's governance structure include any provision that gives a listed party influence beyond what the cap table shows? If you cannot answer that question from your file, the Canadian test is not yet complete.
Where do the two regimes interact and produce the hardest compliance questions?
The hardest questions arise in three recurring patterns. First, where a target entity sits below the OFAC fifty percent line on registered equity but above the Canadian control threshold on functional governance – the entity is not blocked under US law but is caught under Canadian law. A Canadian institution participating in a transaction with that entity is prohibited; a US institution may be permitted, subject to its own assessment. The transaction can proceed on the US side but not the Canadian side, and a joint venture involving both countries faces an impasse.
Second, where the ownership chain includes intermediate entities in a third jurisdiction – an entity incorporated in a Gulf state, or in a jurisdiction without a comprehensive sanctions regime of its own. Each intermediate entity must be analysed under the law of the persons transacting with it. A US person applies the OFAC test; a Canadian person applies the SEMA test. The analysis does not end at the first non-sanctioned jurisdiction in the chain. Both tests trace through the intermediate. The stricter prohibition governs for the party to whom it applies.
Third, where listed status changes during a transaction. OFAC adds and removes persons from the SDN List. Canada amends its schedules. A counterparty that was clean at the time of contract signing may be listed by closing. Both regimes impose obligations that arise on the date of listing, not the date of discovery. The implications for an in-flight transaction are serious: blocked property must not be transferred, and funds held by a prohibited counterparty may need to be frozen. Contractual force majeure and material adverse change provisions rarely contemplate this scenario precisely enough to provide clear protection.
If a transaction is already in progress and a counterparty has been flagged, the window for action is short. For a confidential review of a potential breach or a mid-transaction compliance question, contact Calder & Vance at info@caldervance.com.
What are the enforcement postures of OFAC and Global Affairs Canada?
OFAC's enforcement programme is well-documented through its published penalty notices. Civil penalties under IEEPA can reach significant amounts per violation on a statutory basis, and OFAC uses a detailed framework of aggravating and mitigating factors in determining the actual penalty for a given matter. Voluntary self-disclosure (a VSD – the act of proactively reporting a potential violation to OFAC before the agency identifies it independently) is a recognised mitigating factor and can materially reduce a civil penalty. OFAC's published guidance sets out how a VSD affects the penalty calculation, though it does not guarantee a specific reduction and does not shield a disclosing party from a civil penalty entirely.
Canada's enforcement posture under SEMA is distinct. Global Affairs Canada does not publish penalty decisions in the same volume or with the same level of transactional detail as OFAC. Enforcement actions have been taken, but the public record is less granular. This means that compliance counsel cannot calibrate risk from a settled body of penalty data in the same way that OFAC practice allows. Canadian businesses and their advisers must work from the statutory framework, the regulations, and available regulatory guidance rather than from a rich enforcement precedent.
Both regimes impose record-keeping obligations. Maintaining complete documentation of the ownership analysis, the screening methodology, the date of the search, and the outcome of the legal assessment is essential for any future enforcement defence or VSD submission. In our experience, firms that maintain structured compliance records are substantially better positioned when a potential violation surfaces, whether under OFAC or the Canadian regime.
The EU General Court and UK High Court – not relevant to the OFAC–Canada axis directly – do provide useful comparative context for ownership-and-control jurisprudence. Practitioners advising on OFAC matters note that where a control question is genuinely novel, looking across to EU General Court annulment decisions on ownership and control (the UK and EU test for whether a non-listed entity is caught through a listed person) can illuminate the analytical framework, even though the legal test differs. For readers whose exposure spans the UK or EU alongside the US and Canada, our analysis of the OFSI ownership test is available at The 50 percent rule and ownership analysis: OFSI, and the comparison between OFSI and the EU is set out at The 50 percent rule: OFSI and EU compared.
What are the most common risk flags in cross-border ownership analysis?
Practitioners conducting ownership analysis across the OFAC–Canada axis encounter the same failure patterns repeatedly. First, incomplete ownership trees. A screening tool that processes the first tier of shareholders will miss a listed person sitting at the third or fourth tier of a holding structure. The obligation to trace the chain does not stop where the data becomes inconvenient. Businesses with limited corporate intelligence resources should obtain certified ownership registers, not rely on self-reported cap tables.
Second, failure to re-screen at closing. An ownership check conducted at the start of due diligence may be months old by the time a transaction closes. Designated persons are added to both the SDN List and Canada's schedules on an ongoing basis. A single re-screen at closing costs a fraction of the remediation required if a newly listed person is discovered post-completion.
Third, confusion between the US and Canadian tests when the same entity is subject to both. A compliance officer trained on OFAC methodology may apply the fifty percent rule mechanically to a Canadian-law question, miss the broader control analysis that SEMA requires, and conclude that a counterparty is clean when it is not. That error is not rare. We regularly advise businesses whose internal compliance teams have OFAC training but limited exposure to the Canadian control framework.
Fourth, the myth that a non-US entity has no OFAC exposure. The secondary sanctions programmes administered by OFAC can impose significant restrictions on non-US persons who transact with SDN-listed parties, even where no US nexus exists in the transaction itself. Whether that extraterritorial reach applies in a given situation depends on the specific programme. The analysis is not a simple yes or no, and it should be conducted before the transaction closes rather than after a correspondent bank raises a query.
Fifth, inadequate documentation. Both OFAC and Canada expect businesses to be able to demonstrate that they conducted an ownership analysis at the time of the transaction. A retrospective reconstruction of a compliance check that was never properly recorded carries little weight in an enforcement context.
What should a cross-border business do to manage ownership risk under both regimes?
A structured ownership-analysis process addresses risk under both OFAC and the Canadian regime. The sequence set out below reflects the practice we apply when advising clients on cross-border transactions involving counterparties from or operating in jurisdictions with active designations programmes.
The first step is to identify which regimes apply. A US nexus triggers OFAC obligations for US persons and, depending on the programme, for non-US persons. A Canadian nexus triggers SEMA obligations. A transaction that involves both – because the parties are incorporated or operating in both countries, or because payments route through US correspondent banks – requires a parallel analysis under each regime. Determining the applicable regimes before beginning the ownership analysis allows the work to be scoped correctly from the outset.
The second step is to build a complete legal-entity map for the counterparty. This means identifying all direct and indirect shareholders, beneficial owners, and persons with contractual rights that could constitute control, down to the level at which you are satisfied no listed person holds a material position. The depth of the search should be proportionate to the risk: a routine commercial supplier relationship requires less depth than a joint-venture partner or a target for acquisition.
The third step is to screen each identified person against the relevant lists at the time of the analysis. For OFAC, that means the SDN List and any programme-specific lists that could apply. For Canada, that means the schedules to the relevant SEMA regulations and any other applicable Canadian list. The UN Consolidated List is screened separately and independently. Document the date and the version of each list used.
The fourth step is to apply the applicable test to the results. Under OFAC, aggregate the ownership percentages held by any listed persons and determine whether the fifty percent threshold is reached. Under Canada, assess whether any listed person exercises control, using the governance documents and any relevant contractual arrangements. Where the two tests point to different conclusions, the stricter prohibition governs for the party subject to it.
The fifth step is to document the analysis in a form that would support an enforcement defence or a voluntary self-disclosure. The record should include the ownership tree, the list versions screened, the legal conclusion reached, the name of the person responsible for the analysis, and the date. Update the record at each material event: a new investment round, a change in the cap table, or a mid-transaction restructuring.
Re-screen at closing and at any material change in the counterparty's ownership or in the applicable designated lists. A clean analysis at the start of a six-month transaction is not a clean analysis at the end of it.
Related practices
- Compliance audit and testing – structured review of screening logic, ownership-mapping procedures, and programme design across multiple regimes
- The 50 percent rule and ownership analysis: OFSI – the UK OFSI test compared, including ownership and control analysis
- The 50 percent rule: OFSI and EU compared – divergences between the UK and EU ownership tests for compliance planning