Secondary Sanctions

What Are Secondary Sanctions?

Secondary sanctions are sanctions that can expose non-U.S. persons to U.S. sanctions consequences for engaging in specified dealings with targeted persons, sectors, or jurisdictions, even when the transaction itself does not otherwise have a direct U.S. nexus. They are different from the basic rule that U.S. persons must comply with U.S. sanctions directly.

This matters because secondary sanctions extend sanctions risk beyond the usual U.S.-person and U.S.-jurisdiction framework. A foreign bank, shipping firm, insurer, or trader can face U.S. sanctions exposure for certain conduct even if the transaction stays outside the United States.

Key Takeaways

• Secondary sanctions primarily matter to non-U.S. persons.
• They can attach sanctions risk to specified dealings with targeted persons, sectors, or jurisdictions.
• Secondary sanctions are different from ordinary primary sanctions rules that directly bind U.S. persons.
• The exact exposure depends on the statute, executive order, or program involved.
• Some transactions are carved out or treated as non-sanctionable when they fall within an applicable sanctions exemption or authorization framework.

How Secondary Sanctions Work

Under a secondary sanctions framework, the U.S. government may threaten or impose sanctions on a non-U.S. person that engages in specified conduct involving a targeted person, sector, or jurisdiction. The pressure point is not necessarily that the underlying transaction violated a primary U.S. prohibition directly. The pressure point is that the foreign person engaged in conduct Congress or the executive branch decided should itself trigger sanctions consequences.

That means secondary sanctions are often used as a leverage tool. They can push foreign market participants to avoid dealings that the United States wants to isolate even when those participants are outside the usual domestic jurisdiction rule.

Secondary Sanctions Versus Primary Sanctions

This distinction matters because many sanctions questions begin with the wrong assumption that only U.S. persons have to care. Secondary sanctions are the reason many foreign firms still need to analyze U.S. sanctions risk carefully.

Why Secondary Sanctions Matter Financially

Secondary sanctions matter because they can affect correspondent banking, trade finance, insurance, shipping, commodities, and cross-border investment far beyond the United States itself. A non-U.S. institution may decide not to touch a transaction because the risk is not just whether the payment can settle today, but whether the institution itself could later become a sanctions target.

That is why secondary sanctions can reshape global market behavior even where the underlying parties are not U.S. persons. The risk is often reputational, operational, and existential for the foreign institution involved.

Where Secondary Sanctions Show Up

Secondary sanctions often appear in Iran-, Russia-, Syria-, counterterrorism-, and other program-specific frameworks, but the scope varies significantly by authority. OFAC guidance frequently explains whether a particular type of transaction by a non-U.S. person is sanctionable, non-sanctionable, exempt, or effectively carved out under the applicable program.

This is why the phrase secondary sanctions is not enough by itself. Firms need to ask which authority is involved, what conduct is covered, and whether any program-specific exception or authorization changes the result.

Example of Secondary Sanctions

Assume a foreign financial institution outside the United States considers processing a transaction involving a targeted foreign sanctions nexus. Even if the payment does not clear through the U.S. financial system, the institution may still face U.S. sanctions exposure if the underlying authority treats that conduct as sanctionable for non-U.S. persons. That is a secondary sanctions issue.

The Bottom Line

Secondary sanctions are sanctions that can expose non-U.S. persons to U.S. sanctions consequences for engaging in specified dealings with targeted persons, sectors, or jurisdictions, even without a direct U.S. nexus in the transaction itself. They matter because they extend U.S. sanctions pressure outward into global finance and commerce.