What is sanctions screening?

Sanctions screening is the process of checking the names of individuals, companies, or other entities against government-maintained lists of sanctioned, restricted, or denied parties. The purpose is to identify whether a counterparty, customer, supplier, or partner is subject to sanctions, trade restrictions, or asset freezes before entering into a transaction or relationship.

When should sanctions screening be performed?

Screening should occur before onboarding new customers, counterparties, or partners; before executing transactions; on a periodic basis for ongoing relationships (as lists are updated frequently, often multiple times per week); when customer information changes; and during mergers and acquisitions. One-time screening is insufficient — ongoing or periodic rescreening is essential because sanctions lists change constantly.

Which sanctions lists should I check?

At minimum, US persons must screen against OFAC (SDN and Non-SDN lists) and BIS restricted party lists. But most organisations with international exposure should also screen against the UN Security Council Consolidated List, EU Consolidated Financial Sanctions, UK OFSI Sanctions List, and the sanctions lists of any jurisdiction where they operate or have counterparties. The specific lists depend on your regulatory obligations, geographic exposure, and risk profile.

What happens if I don't screen for sanctions?

Failing to screen can result in inadvertent sanctions violations, which carry severe consequences. OFAC operates on a strict liability basis, meaning violations can occur even without knowledge or intent. Penalties include civil fines up to $300,000+ per violation (or twice the transaction value), criminal fines up to $1 million and 20 years imprisonment for willful violations, and reputational damage. OFAC imposed $262 million in civil penalties across 13 enforcement actions in 2025 alone.

Sanctions Screening

Sanctions screening is the process of checking names against government-maintained lists of sanctioned, restricted, and denied parties before entering into a transaction or relationship. It sounds simple, but doing it properly — across multiple jurisdictions, with ongoing monitoring and documentation — is where most organisations struggle. This page explains what sanctions screening involves, which lists matter, and how to build a process that actually protects you.

Why sanctions screening matters

Sanctions screening is not optional. In most jurisdictions, it is a legal requirement for organisations involved in financial services, international trade, or cross-border transactions. But the consequences of getting it wrong extend beyond fines:

Strict liability — under US sanctions law (OFAC), a violation can occur even without knowledge or intent. "We didn't know" is not a defence. OFAC imposed $262 million in penalties across 13 enforcement actions in 2025 alone[1]
Criminal exposure — wilful violations carry criminal penalties of up to $1 million and 20 years imprisonment per violation under IEEPA, and similar penalties under the EAR for export control violations
Loss of banking access — banks that process transactions involving sanctioned parties risk having their US correspondent accounts severed, as happened with Swiss bank MBaer in 2026[2]
Reputational damage — enforcement actions are public. Customers, partners, and investors will see them
Secondary sanctions — non-US companies that deal with sanctioned parties risk being designated themselves, losing access to US markets and the US dollar clearing system

Which lists to screen against

There is no single "sanctions list." Multiple governments and international bodies each maintain their own lists, and they do not always overlap. A party cleared on OFAC may be designated by the EU, and vice versa. The lists you need to check depend on your jurisdiction, your counterparties' jurisdictions, and your risk profile.

Authority	Key lists	Who it applies to
US — OFAC (Treasury)	SDN List, Consolidated Non-SDN List	All US persons; non-US persons via secondary sanctions
US — BIS (Commerce)	Entity List, Denied Persons List, Unverified List, Military End-User List	Anyone exporting items subject to the EAR, including non-US persons under FDPR
UN Security Council	UNSC Consolidated List	All UN member states are obligated to implement
European Union	EU Consolidated Financial Sanctions	All EU persons and entities; transactions within EU jurisdiction
United Kingdom	UK Sanctions List (OFSI)	All UK persons and entities (post-Brexit, independent from EU)
Australia	DFAT Consolidated List	Australian persons and entities; implements UN and autonomous sanctions
Canada	Canadian Consolidated Sanctions, Named Research Organizations List	Canadian persons and entities; research institutions receiving federal funding
Switzerland	SECO Sanctions List	Swiss persons and entities

A common mistake: screening only against OFAC or only against your home jurisdiction's list. If your counterparty operates internationally, or if any part of the transaction touches the US financial system (including US dollar clearing), OFAC sanctions apply regardless of where you are. And if you operate in or sell into the EU, UK, or Australia, those jurisdictions' sanctions apply independently. The safest approach is to screen against all major lists in a single pass.

What is a consolidated screening list?

A consolidated screening list combines multiple government lists into a single searchable database, so you don't have to check each authority separately.

The US Consolidated Screening List (CSL)

The US government provides an official Consolidated Screening List at trade.gov, combining lists from the Departments of Commerce (BIS), Treasury (OFAC), and State into approximately 12,000 entries across 13 federal lists.[3] It offers a search engine with fuzzy name matching, downloadable files (CSV, TSV, JSON), and an API.

However, the CSL has important limitations:

It covers only US government lists — no EU, UK, UN, Australian, Canadian, or Swiss data
It does not include beneficial ownership information needed for OFAC's 50% Rule
It provides no documentation, reporting, or audit trail — you get a search result, but no timestamped record of what you searched and when

Third-party consolidated screening

Third-party tools like Sanctions Checklist go beyond the CSL by aggregating US lists alongside international sanctions data (UN, EU, UK, Australia, Canada, Switzerland, Singapore, Japan, and others) in a single search. This eliminates the risk of missing a designation on a list you didn't think to check. Our comparison page breaks down how different providers approach this and what they charge.

Search across 15+ sanctions and restricted party lists in one query

OFAC, BIS, UN, EU, UK, Australian, Canadian, Swiss, and more. First 10 searches are free, no account required.

Search entities

When to screen

One-time screening is not sufficient. Sanctions lists are updated frequently — OFAC can publish new designations multiple times per week, and BIS regularly adds entities to the Entity List. A name that was clear last month may not be clear today.

Before onboarding — screen new customers, counterparties, suppliers, and partners before entering into any agreement
Before executing transactions — re-screen at the point of transaction, particularly for high-value or infrequent dealings
On a periodic basis — reschedule screening for ongoing relationships at a frequency proportionate to your risk (daily, weekly, or monthly)
When information changes — re-screen when a customer's details change (name, address, ownership, jurisdiction)
During M&A — screen the target company's customer base, supplier base, and beneficial owners as part of acquisition due diligence
After list updates — ideally, your screening process is triggered automatically when underlying lists are updated

Building a defensible screening process

OFAC has published a Framework for OFAC Compliance Commitments outlining what it considers an effective sanctions compliance program. Organisations that follow this framework receive favourable consideration during enforcement actions.[4] The framework identifies five pillars:

Management commitment

Senior leadership must own the compliance program, allocate adequate resources, and ensure direct reporting lines. Compliance cannot be an afterthought delegated to a junior employee.

Risk assessment

Systematically evaluate your exposure: where do you operate, who are your counterparties, what products or services do you provide, and which jurisdictions are involved? The depth of screening should be proportionate to the risk.

Internal controls

Documented policies and procedures for how screening is performed, what happens when a potential match is found, who makes escalation decisions, and how results are recorded. The key word is documented — an informal process that exists only in people's heads is not defensible.

Testing and auditing

Regular independent review of whether your screening program is actually working. Are searches being performed? Are matches being escalated? Are records being kept? Test with known positive matches to verify your tools catch them.

Training

Relevant personnel must understand sanctions requirements, know how to use screening tools, and recognise red flags. Training should be ongoing, not a one-time onboarding exercise.

The documentation is the compliance. In an enforcement action, OFAC does not just ask whether you screened — it asks for evidence. Timestamped search records, documented escalation decisions, written policies, and training records are what separate a defensible program from an indefensible one. This is why tools that generate audit-ready reports (PDF or CSV with search parameters, sources checked, and results) are valuable beyond the search itself.

Common screening mistakes

Screening only once — lists change constantly. A one-time check at onboarding is not ongoing compliance
Exact-match only — name variations, transliterations, and spelling differences mean exact matching misses real hits. Broad and fuzzy matching are essential, especially for names transliterated from Arabic, Cyrillic, or Chinese scripts
Ignoring the 50% Rule — screening the direct counterparty but not investigating their ownership structure leaves you exposed to entities blocked by operation of OFAC's aggregation rules
Checking only one list — OFAC alone is insufficient if you have EU, UK, or other international exposure
No records — if you can't prove you screened, you effectively didn't. Undocumented screening provides no mitigation in an enforcement action
Over-relying on your bank — your bank screens its own transactions, but that does not relieve you of your independent obligation to screen your counterparties and supply chain

Start screening now

Search OFAC, BIS, UN, EU, UK, Australian, and other international sanctions lists in a single query. Generate timestamped PDF reports for your compliance records. First 10 searches are free.