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What is the OFAC 50% rule?

Terri Luttrell, CAMS-Audit, CFCS
January 27, 2026
0 min read

What is the OFAC 50% rule?  

OFAC’s sanctions guidance on entity ownership

OFAC’s 50 percent rule helps financial institutions and others understand when to block transactions involving entities or organizations. Compliance with the rule is as substantial as ever.

The OFAC 50% rule: What it is

The OFAC 50% rule is guidance from the U.S. Department of the Treasury’s Office of Foreign Assets Control (OFAC) that clarifies which entities and organizations must be blocked from transactions under U.S. sanctions programs. The rule plays a critical role in ensuring that sanctioned individuals cannot bypass restrictions by using corporate structures to hide ownership.  

Specifically, OFAC’s 50% rule is the requirement to consider as a blocked party any entity that is owned 50 percent or more, directly or indirectly, by one or more blocked individuals or parties, even if the entity is not explicitly named on the Specially Designated Nationals (SDN) list.  

This means U.S. financial institutions must treat these entities as though they were sanctioned, and engaging in transactions with them is prohibited unless authorized by OFAC.

Why is the OFAC 50% rule important right now?

OFAC administers and enforces U.S. economic and trade sanctions against foreign governments, regimes, terrorists, international drug traffickers, and transnational criminal groups. And while sanctions compliance has always been a backbone of Bank Secrecy Act (BSA) compliance, the global political and economic environment in recent years has meant increased sanctions and intense regulatory scrutiny to prevent transactions to and from sanctioned countries, individuals, and entities.

For compliance professionals, what used to be a simple “are they on the list?” check has grown more complex as OFAC has issued new guidance in recent years. However, violating sanctions can lead to severe civil penalties and reputational damage for financial institutions, underscoring the importance of understanding the 50% rule and ownership-related sanctions risk.

A series of enforcement actions makes it clear that OFAC is actively monitoring indirect ownership and control risks. Institutions that fail to identify entities subject to the OFAC 50% rule may face civil penalties, even when the blocked party is not directly named.

With sanctions programs evolving rapidly in response to geopolitical conflict, financial institutions are expected to ensure their screening and due diligence programs are up to date and capable of identifying entity ownership risk.

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Recent enforcement highlights the broad interpretation of the 50% rule.

In a recent enforcement action, OFAC issued a civil money penalty against Chicago-based private equity firm IPI Partners, LLC, for violations of U.S. sanctions on Russia. The violations stemmed from indirect dealings with sanctioned oligarch Suleiman Kerimov, who was added to the OFAC SDN List on April 6, 2018. Under OFAC rules, that designation required the blocking of all related property and interests in property.

What makes this case significant is that Kerimov did not directly own 50% or more of the transacting entity but was determined to be indirectly involved in the dealings. The enforcement highlights OFAC’s broad interpretation of ownership and control under the 50% rule, reinforcing that it looks beyond legal formalities to identify real-world influence and economic benefit.

How do financial institutions apply the OFAC 50% rule?

Unlike the SDN list, OFAC does not publish a formal 50% list of blocked entities. Instead, institutions must understand ownership aggregation and are expected to gather beneficial ownership information on legal entities, cross-reference owners with the SDN list, and aggregate ownership percentages across multiple blocked persons to determine if they meet the 50 percent threshold.

If an entity is determined to be 50 percent or more owned, directly or indirectly, by blocked individuals or entities, it is considered blocked, regardless of whether it appears on any OFAC list. Institutions that rely solely on list-based screening without ownership analysis risk missing sanctioned entities.

What should financial institutions do to stay compliant?

  1. Strengthen due diligence and CDD practices
    A robust customer due diligence (CDD) program is the first line of defense. Institutions should collect beneficial ownership information at onboarding and update it regularly. Institutions need to check both direct and indirect ownership before doing business. Pay special attention to complex corporate structures or clients operating in high-risk jurisdictions.
  2. Train staff on sanctions compliance expectations
    Staff responsible for compliance, onboarding, and investigations must understand how the OFAC 50% rule works and how to spot red flags. They should also consider the risk when ownership or control by sanctioned individuals or entities is significant—even if below 50%. Sanctions compliance requires human oversight and critical thinking.
  3. Document entity ownership reviews and decision-making
    OFAC expects institutions to make reasonable efforts to identify blocked entities based on ownership. That means keeping clear records of ownership reviews, decision rationales, and escalation procedures.
  4. Review your program considering recent enforcement actions
    Many institutions have not reassessed their sanctions compliance programs since the last major OFAC update. This is a good time to revisit policies and procedures to ensure they reflect current expectations, including application of the OFAC 50% rule.

What does this mean for community banks and credit unions?

Smaller institutions may assume that the OFAC 50% rule is primarily relevant to international or large-scale banking relationships. However, enforcement actions like the one involving IPI Partners prove that any U.S. person, including domestic financial institutions, must comply. That is why institutions of all sizes must build ownership analysis into onboarding, transaction reviews, and customer risk ratings.

 

Sanctions compliance still requires people

Sanctions compliance cannot be left solely to software. Institutions must ensure they have adequate staffing and escalation procedures to evaluate potential ownership risks flagged during onboarding or monitoring. As OFAC’s guidance indicates, even formalistic ownership structures can mask absolute control or influence.

Trained AML staff must have the time and authority to dig deeper and escalate when necessary. Institutions facing turnover, resource gaps, or outdated processes should strongly consider an AML staffing assessment to ensure their programs can meet these evolving expectations.

How does the OFAC 50% rule relate to the OCC’s MLR pullback?

While the Office of the Comptroller of the Currency (OCC) recently discontinued the Money Laundering Risk (MLR) report, this should not be seen as a reduction in regulatory expectations. Instead, it signals a shift from prescribed formats to outcomes-based compliance.

The OFAC 50% rule is a prime example. Just as the OCC expects institutions to self-manage money laundering risk without relying on the MLR, OFAC expects institutions to apply ownership and control guidance proactively, rather than just screening against static lists. The regulatory burden lies with institutions to demonstrate adequate controls and thoughtful risk assessments, not just adherence to forms.

Compliance is evolving, so should your program

The OFAC 50% rule remains a fundamental requirement of sanctions compliance. Regulators are paying close attention to beneficial ownership and control structures, even when they are not obvious.

Financial institutions must ensure that technology, staffing, and training keep pace with regulatory expectations. Staying compliant means going beyond the checklist and being prepared to explain and defend every decision. As sanctions programs evolve, it’s not enough to rely on past processes. Institutions must equip teams to manage today’s ownership risks and prepare for tomorrow’s enforcement realities.

 

 

About the Author

Terri Luttrell, CAMS-Audit, CFCS

Compliance and Engagement Director
Terri Luttrell is a seasoned AML professional and former director and AML/OFAC officer with over 20 years in the banking industry, working both in medium and large community and commercial banks ranging from $2 billion to $330 billion in asset size.

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