Secondary US Sanctions

Secondary US Sanctions and Their Practical Pressure on Non-US Persons

Secondary US sanctions do not concern only US persons or situations with a direct US nexus. Their function is precisely to place economic and legal pressure on companies, investors, banks, directors, and other market participants outside the United States where, from a US perspective, they maintain or support sanctions-relevant business relationships with certain states, entities, or individuals. In practice, the force of these measures often lies less in abstract doctrine than in their global market and compliance effects. European companies may therefore face severe exposure even where they are not incorporated in the United States and do not view themselves as directly subject to US law.

What Secondary US Sanctions Actually Mean

Primary sanctions typically regulate the relationship between the sanctioning state and the immediate sanctions target. Secondary sanctions go further. They are directed at third parties, meaning persons or companies from third countries that continue or support certain transactions with a primary sanctions target. That is their extraterritorial function. German-language scholarship has long described this mechanism as one of the core problems in the transatlantic sanctions conflict, especially in the Iran context, but also more broadly.

For practice, it is critical to understand that US sanctions regimes do not all operate in the same way. Some restrictions turn on US-origin goods or the involvement of US persons. Others expressly extend to non-US persons. One of the uploaded systematic overviews of US sanctions lists identifies exactly this distinction and treats the involvement of a person or entity subject to globally operative embargo logic or secondary sanctions as a separate point of attachment.

Why Secondary Sanctions Are Especially Dangerous for European Companies

For non-US companies, the primary danger often does not begin with a formal government action. It begins with market reaction. Banks, payment providers, insurers, shippers, investors, suppliers, and database vendors regularly integrate US sanctions risk into their own screening and risk-control systems. The mere possibility of secondary sanctions exposure may therefore lead to frozen or terminated accounts, disrupted correspondent banking relationships, blocked payments, refused financing, or terminated contracts. Scholarship describes this market exclusion as the characteristic practical effect of extraterritorial sanctions pressure.

This effect is also reflected in official OFAC materials. OFAC’s FAQs repeatedly address whether and when non-US persons “risk exposure to U.S. secondary sanctions.” That confirms that, from the US perspective, the sanctions architecture is designed to influence market participants outside the United States as well.

Typical Secondary Sanctions Scenarios

In practice, secondary sanctions issues rarely arise in the abstract. They usually emerge in concrete commercial crisis situations. Typical constellations include blocked or rejected payments, terminated supply or service relationships, the collapse of joint ventures, bank inquiries into ownership and control structures, financing problems, investor withdrawals, or the refusal of counterparties to continue a transaction.

These cases are especially relevant where non-US companies maintain relationships with states, sectors, or persons regarded from a US perspective as high risk. In those situations, the issue is often not limited to existing contracts. It may extend to shareholding structures, governance, use of funds, goods flows, financing chains, or forms of factual influence that may be viewed as sanctions-relevant support. In ownership and control cases in particular, it is therefore rarely sufficient to look only at the named contractual counterparty.

SDN Designation and Secondary Sanctions Are Not the Same Thing

Secondary sanctions and SDN designation overlap, but they are not identical. The SDN List is one of OFAC’s central sanctions lists, but OFAC maintains additional lists, and the broader US sanctions framework includes further lists as well. Some entries are relevant only for US persons, while others expressly matter for non-US persons too. Whether an entry is relevant outside the United States therefore depends on the underlying program, the legal basis, and the way the restriction is structured.

For companies outside the United States, this distinction matters. Not every OFAC-related issue is automatically a classic secondary sanctions case. And not every commercially harmful reaction is itself a formal sanctions measure. In many cases, formal US legal exposure, banks’ contractual risk decisions, and internal compliance escalation interact. That combination is what makes secondary sanctions matters strategically demanding.

The Relationship with the European Union

The European Union does not generally recognize the extraterritorial application of third-country laws and has repeatedly taken a critical position toward US secondary sanctions. Legal scholarship describes this as a major point of conflict between the US sanctions model and the European understanding of jurisdictional limits. At the same time, that same literature shows that European companies remain exposed in practice because market reactions occur regardless of the EU’s legal assessment.

Why Early Legal Assessment Matters

Secondary US sanctions often begin causing commercial damage at a very early stage. Anyone who realizes too late that the issue is not merely a bank inquiry but a broader sanctions-risk structure loses valuable time. The reverse is also true: a premature reaction may create problems where ownership issues, internal facts, communication lines, and documentary records have not yet been properly assessed.

At the outset, it is therefore usually necessary to determine what the real issue is. Is it a primary sanctions problem involving a US nexus, a genuine secondary sanctions risk, a listing issue, a market reaction without formal designation, or a mixed situation involving several layers at once? The answer determines which steps are sensible, in what order they should be taken, and how communications with banks, counterparties, investors, and internal compliance functions should be managed.

Our Work in Matters Involving Secondary US Sanctions

We advise companies, directors, beneficial owners, and other affected persons on the legal and strategic assessment of secondary US sanctions exposure. Our work includes the review of business models, supply and payment structures, ownership and control arrangements, the evaluation of market and banking reactions, and coordination with internal and external compliance processes.

Depending on the case, we also assess whether the matter is primarily a secondary sanctions issue or whether additional questions such as de-listing, European response options, bank account closures, screening databases, or reputational follow-on conflicts must be addressed at the same time. The objective is not merely to answer an isolated sanctions question, but to build a coherent overall strategy.

Conclusion on Secondary US Sanctions

Secondary US sanctions are a distinct and highly significant risk for non-US persons and companies outside the United States. Their practical effect often lies less in an immediately enforced governmental measure than in global compliance reactions and commercial exclusion. What matters therefore is an early and precise assessment of the actual risk structure. Only then can one distinguish whether a case is driven primarily by formal US sanctions pressure, by defensive market behavior, or by a combination of both. The legal literature has long identified this conflict as a central problem for European companies, while official OFAC materials confirm that non-US persons may, depending on program and facts, indeed come within the scope of secondary sanctions exposure.