The OFAC 50 Percent Rule Explained: When a Company Is Sanctioned Without Being on Any List

The Rule in One Sentence

Any entity owned 50 percent or more, directly or indirectly, by one or more blocked persons is itself blocked, automatically, whether or not that entity's name appears on any sanctions list. This is OFAC's "50 Percent Rule," and it is the biggest blind spot in a screening program that only checks names against lists.

Run a subsidiary's name through any screening tool, and if it has never been individually designated, you get a clean result. The result is accurate. It is also incomplete: OFAC's blocking rules extend automatically to ownership, with no list update required to trigger them. A subsidiary of a sanctioned company can be blocked itself, without ever showing up in a name search, purely because of who owns it.

How the Rule Works

OFAC's guidance is direct: the rule applies to entities owned 50 percent or more, in the aggregate, by one or more persons whose property is blocked. Two words carry the weight: "aggregate" and "indirectly."

Aggregation: stakes from different owners add up

One blocked person does not need to hold the majority alone; the rule sums every blocked owner's stake together. If Blocked Person X owns 25% of Company A and Blocked Person Y, a separately designated party, owns another 25%, the two stakes add to 50%, and Company A is blocked, even though neither owner individually crosses the threshold. This holds even when the two were designated under unrelated programs, say one Russia-related and one narcotics-related, with nothing connecting them except that both are blocked.

Indirect ownership: it flows through holding structures

"Directly or indirectly" means the threshold reaches ownership running through intermediate entities, not just the direct line on a cap table. If a blocked person owns 60% of Holdco, Holdco is itself blocked. If Holdco owns 70% of Opco, Opco is blocked too, because it is majority-owned by a blocked entity. This does not multiply down the chain: nobody calculates 60% times 70% to argue the effective stake falls short of 50%. Once an intermediate entity is blocked, its full stake counts one level down.

Ownership vs. Control: a Real Distinction, Not a Loophole

The 50 Percent Rule is a bright-line ownership test, and by its own terms does not reach control. An entity a blocked person controls, through board seats, a voting agreement, or a management contract, but does not own 50% or more of, is not automatically blocked under this rule. That is not the same as safe: OFAC can designate a controlled-but-not-majority-owned entity under other criteria whenever it chooses, and it has urged caution around transactions with entities where a blocked person holds a large sub-50% stake or exercises control by other means. A 49% stake paired with a board-appointment right is a gray zone today and a plausible SDN entry tomorrow. Treat control as a real risk signal even when it does not trip the automatic rule.

Why a Clean Screening Result Is Necessary but Not Sufficient

Name screening answers one question: does this entity, under this name, appear on a sanctions list? It says nothing about who sits behind it in the cap table. A subsidiary can come back clean across every list a screening tool checks, SDN, Non-SDN Consolidated, BIS Denied Persons, UN, EU, UK, Canada, Switzerland (see why screening beyond OFAC's own lists matters), and still be legally blocked property, because the block attaches through ownership math OFAC does not publish as a separate list entry. There is no "50 Percent Rule list" to run a name against; that is the gap behind a question worth asking before any deal: can I do business with a subsidiary of a sanctioned company? The honest answer starts with the ownership percentage, not the subsidiary's own name.

How to Actually Check Who Owns a Company

Ownership due diligence has no shortcut, but the steps are well defined:

• Pull the corporate registry. Most jurisdictions keep a registrar with shareholder or officer records for direct owners at least; coverage and reliability vary widely by country, more below.
• Get a beneficial ownership declaration. Beneficial ownership rules and standard KYC onboarding typically let you require a counterparty to disclose owners holding 25% or more. Ask in writing and keep the record.
• Trace ownership up, not just across. "Holdco Ltd, 60%" on a registry entry is not the end of the inquiry if Holdco itself has other owners. Follow the chain to natural persons, or until you are confident no blocked person's aggregate stake reaches 50%.
• Screen every owner and director individually. This is the step naive programs skip. Every person or entity with a meaningful stake, and every director with real authority, gets the same sanctions check as the company itself. Each individual check is free at ofacscreen.com/screen, so there is no cost reason to stop at the top-line name.

For an ongoing relationship, not a one-time deal, repeat this check periodically. Ownership changes, and so do sanctions lists.

The Divestment Game

A blocked person who owns 55% of a company has an obvious move: sell 6% to someone else and drop to 49%, taking the entity outside the 50 Percent Rule on paper. OFAC is aware this happens, and its guidance is explicit that a sub-50% stake, especially one that looks like a recent, deliberate step-down from a majority position, does not automatically clear an entity of risk. It reserves the right to designate the entity anyway if the restructuring reads as evasion rather than a genuine sale. A counterparty whose ownership history shows a blocked person dropping to just under 50% around the time of their own designation, or opaque intermediate transfers with no identifiable buyer, is not a clean result; it reads closer to a confession than a coincidence.

Red Flags That Warrant Deeper Digging

• Opaque holding structures. Multiple layers of shell entities between the counterparty and its ultimate owners, especially across several jurisdictions.
• Ownership changes shortly after a designation. A sanctioned individual's stake transferred to a family member, associate, or newly formed entity.
• Closed or unreliable registries. Jurisdictions that do not publish beneficial ownership, or where nominee shareholders are common, make the chain effectively unverifiable from public records alone; treat that opacity itself as a risk factor.
• Board or management overlap with a blocked person, even without a majority stake.
• A counterparty that resists providing ownership information a legitimate business would readily supply.

None of these prove a violation on their own. All of them mean a single registry check is not enough.

Documenting the Ownership Analysis

A regulator reviewing your file later wants to see not just that you screened the company's name, but that you asked who owns it and wrote the answer down. Keep, alongside the screening record: the ownership chain as traced, the source for each layer (registry printout, beneficial ownership declaration, other document), the date traced, the calculated aggregate blocked-person ownership if any, and your conclusion. This is standard practice in a working five-pillar OFAC compliance program, not an extra step for one unusual deal. That file is easier to build when each owner's screening result is itself documented rather than remembered: the one-time $9.99 OFACScreen PDF report turns a single search into an audit-ready record, timestamped, with lists checked and version dates included, so running one per owner or director leaves a paper trail for the whole chain, not just the top-line entity.

Bottom Line

If your analysis shows aggregate blocked-person ownership at or above 50%, the entity is blocked property right now, regardless of what its own name search shows. Treat it exactly as a direct SDN hit: freeze the transaction, do not tip off the counterparty, escalate to compliance and legal, and follow the same reporting obligations as any other block; see how to handle an OFAC match for the full sequence, which applies here even though no list entry triggered it.

A clean name search tells you a counterparty is not individually listed. It does not tell you who owns it. For any counterparty that is itself a company, ownership due diligence, registries, beneficial ownership declarations, and individual screening of owners and directors, is not optional extra credit. It is the part of the check a name search cannot do for you.