Sanctions Lists Explained: OFAC, UN, EU and UK

Sanctions lists are official records of people, companies, vessels and other parties subject to government or international restrictions. Depending on the programme, restrictions can include freezing assets, prohibiting funds or economic resources from being made available, travel bans, limits on trade, or bans on specific transactions. Countries and regions can also be subject to broad restrictions, although they are usually covered through a sanctions programme rather than an entry on an individual name list.

For banks, payment firms, marketplaces and other regulated businesses, sanctions screening is the process of checking customers, beneficial owners, counterparties and transactions against relevant restrictions. A possible name match is not automatically a violation. It must be investigated using identifiers such as date of birth, address, nationality, company registration data and ownership information.

The main sanctions lists

Several authorities publish lists with global practical significance. Their legal reach, listing criteria and restrictions differ, but many names appear on more than one list.

• The US Treasury Department’s Office of Foreign Assets Control, or OFAC, administers US economic and trade sanctions. Its Specially Designated Nationals and Blocked Persons List, commonly called the SDN List, identifies parties whose property and interests in property generally must be blocked by US persons. OFAC also publishes other sanctions-related lists and programme guidance.
• The United Nations Security Council Consolidated List brings together individuals and entities designated under Security Council sanctions regimes. UN member states are required to implement Security Council measures, but domestic laws determine how those measures operate in each country.
• The European Union Consolidated Financial Sanctions List compiles persons, entities and bodies subject to EU financial sanctions. EU regulations are directly applicable across EU member states, while national authorities oversee implementation and enforcement.
• The UK maintains the UK Sanctions List, which records designations made under UK sanctions regulations. The UK’s Office of Financial Sanctions Implementation, or OFSI, publishes guidance on financial sanctions and helps support implementation.

Why lists overlap but do not match

The United States, UN, EU and UK make designations through separate legal and political processes. They may respond to the same conflict, terrorism concern, human rights abuse or proliferation risk, yet designate different people or act at different times. A UN designation may later be implemented by the EU and UK, for example, while the US may apply additional unilateral measures. Conversely, an EU or UK designation does not automatically create an OFAC listing.

A firm should therefore screen against every sanctions regime that applies to it. That assessment commonly depends on where the firm is incorporated and operates, the location and nationality of relevant staff, its customers and counterparties, goods and services involved, and transaction routes. Use of US dollars or US financial institutions can create a US connection that requires particular care. Firms should obtain legal advice on their own exposure rather than assuming that compliance with one list satisfies all others.

The OFAC 50 percent rule

One of the most important ownership rules is OFAC’s 50 Percent Rule. An entity is treated as blocked if one or more blocked persons own, directly or indirectly, 50 percent or more of it in aggregate, even when the entity is not named on the SDN List. For example, two blocked persons each owning 25 percent can cause the entity to be treated as blocked.

This makes name-only screening insufficient. Businesses need beneficial ownership data, meaning information about the natural persons who ultimately own or control a company. OFAC’s rule is an ownership test, not a general rule that every company controlled by a blocked person is automatically blocked. However, control can still create significant sanctions, compliance and reputational risk, and other jurisdictions may apply different ownership or control tests.

Sanctions, embargoes and sectoral restrictions

Sanctions is the broad term for restrictive measures directed at countries, organisations, sectors or named parties. An embargo is generally a wider prohibition on trade or commercial activity with a country, territory or category of goods. In practice, programmes can combine targeted listings with broad country-based restrictions.

Not every sanctions measure requires a full asset freeze. Sectoral sanctions restrict defined activities, such as financing, dealing in certain debt or equity, providing technology, supplying controlled goods, or supporting specified energy, defence or transport activity. The scope can depend on the product, contract date, ownership, destination and service provided. A counterparty may therefore be permissible for some activity but prohibited for another.

Why screening must be continuous

Lists change frequently. Authorities add and remove names, correct identifying information, issue general or specific licences, amend programme rules and create wind-down periods. A customer cleared at onboarding can become designated later, and a corporate customer’s ownership can change without any list entry changing.

For that reason, sanctions controls normally include screening at onboarding and ongoing rescreening of customers, beneficial owners and relevant transactions. Transaction screening is especially important because a payment can involve a newly designated beneficiary, an intermediary bank, a vessel or a destination that was not apparent when the customer relationship began. Systems also need escalation procedures for potential matches and documented decisions.

Sanctions compliance is not a one-time database check. It is an ongoing assessment of names, ownership, transactions, jurisdictions and the rules in force at the time.

This explainer is general information, not legal advice. Sanctions programmes, licences and enforcement priorities can change quickly, and the correct treatment of a specific person or transaction depends on the applicable law and facts.