Sanctions Screening / Learning brief
Who issues sanctions: regimes and authorities
Your notes
In simple terms / 01
What this means in plain language
Several authorities issue sanctions: the United Nations, the United States, the European Union, and the United Kingdom among them. Their lists overlap but are not identical, so a bank must decide which regimes its business obliges it to apply.
Four issuers dominate sanctions screening. The United Nations (UN) Security Council adopts measures that member states are expected to implement; its consolidated list is a global baseline, but it binds a bank only once national or regional law puts it into force. The United States Office of Foreign Assets Control (OFAC) administers United States programmes and publishes the Specially Designated Nationals and Blocked Persons list (the SDN list); its reach is felt worldwide because so many payments settle in United States dollars. The European Union (EU) adopts restrictive measures in a consolidated list applied across its member states. The United Kingdom's Office of Financial Sanctions Implementation (OFSI) maintains the United Kingdom consolidated list. These lists overlap heavily, but they diverge in coverage and timing: a name can appear on one for several days before another adds it, or never appear on a second list at all.
Complete lesson / 02
Understand the full idea, step by step
Ask four different authorities whether a name is sanctioned and you can get four different answers. None of them is wrong. They are separate legal systems, and a bank has to work out which of them its own business obliges it to obey.
| Authority | Its list | Where it sits in the legal chain |
|---|---|---|
| UN Security Council | UN Consolidated List | A global baseline member states are expected to implement — it does not bind a bank directly until national or regional law puts it into force. |
| US OFAC (Treasury) | SDN list, plus other lists | US programmes; felt worldwide because so much international payment settles in US dollars, and dollar clearing runs through the US financial system. |
| EU (Council / Commission) | EU consolidated list | Restrictive measures that apply across EU member states. |
| UK OFSI (HM Treasury) | UK Sanctions List | UK financial sanctions, designated independently since the UK left the EU. |
OFAC and the SDN list — Office of Foreign Assets Control; Specially Designated Nationals and Blocked Persons list
OFAC administers United States sanctions programmes and publishes the SDN list among others. A name on the SDN list is blocked — assets frozen, dealings generally prohibited for US persons. OFAC also publishes non-SDN lists whose legal consequences differ: a sectoral or non-blocking entry does not carry the same obligation as an SDN entry, which is why the reviewer reads the programme tag, not just the name.
Which lists a bank must apply
Which lists a bank screens is decided by its exposure, not its preference. A bank applies the lists of every jurisdiction where it is incorporated, licensed, or operating; the lists tied to the currencies it clears, since US dollar business effectively imports US expectations even for a non-US bank; and whatever its correspondent banks require as a condition of the relationship. A euro-area bank with a dollar clearing account will typically screen the EU, UN, and OFAC lists at a minimum, and add the UK list if it does business touching the UK. This selection is written policy, owned by compliance, and reviewed whenever the bank's footprint changes — a new market, currency, or correspondent can add a list to the required set.
What decides the required set of lists
- Where it operates
- Jurisdictions where the bank is incorporated, licensed, or active
- What it clears
- The currencies it settles — dollar clearing imports US expectations
- Who it banks with
- Lists correspondents require as a condition of the relationship
- Owned by
- Compliance, as written policy — reviewed when the footprint changes
If the UN list is a global baseline, why is applying that one list not enough?
Two reasons. First, a UN designation does not bind a bank on its own — a member state must transpose it into national or regional law first. Second, the US, EU, and UK each make autonomous designations that never went through the UN, so their lists carry names the UN list does not. Since the UK left the EU it designates independently, which means the EU and UK lists are two separate obligations even where they overlap heavily.
COMMON CONFUSION
“The major lists are essentially one master list under different names, so matching against any one covers the rest.”
The lists overlap but are not identical. A name may sit on one list for several days before another follows, or appear on one and never on another, and each issuer publishes its own record format. Provenance also changes meaning — a match against a blocking list points toward a freeze, while a match against a sectoral list points toward an activity check.
STRICTLY SPEAKING
Strictly speaking, this is a simplified map. It omits export-control and non-proliferation lists and the other national authorities that some institutions also screen, and it compresses how UN measures are transposed into national law. The point to carry forward is the principle: a match means different things depending on which authority and which list it came from, so a screening system preserves that provenance on every record.
FOR NOW, REMEMBER
- Four authorities dominate payments screening: the UN Security Council, US OFAC, the EU, and the UK's OFSI.
- The UN list is a global baseline but does not bind a bank until national or regional law transposes it.
- Which lists a bank applies follows from its exposure — jurisdictions, currencies cleared, and correspondent requirements — set as written policy.
- The lists overlap but differ, and the source list of a match shapes what the match could require.
TRY IT YOURSELF
Meridian Bank is not a US bank, but it clears a US dollar payment that raises a match against the OFAC SDN list. A junior colleague suggests "we're not a US institution, so OFAC doesn't concern us." Is that a safe position?
Now you know who writes the lists. The next lesson opens up what a single designation actually demands of a bank — the freeze, the prohibition on making funds available, and the ownership rule that pulls in companies never named on any list.
KEEP GOINGKey takeaways / 03
Three things to remember
- 01
The UN, OFAC in the United States, the EU, and the United Kingdom's OFSI are the main issuers a screening programme encounters.
- 02
Overlapping lists are not identical copies; coverage and timing differ between regimes.
- 03
A bank applies the lists of every jurisdiction whose law reaches it, through incorporation, licensing, operations, or the currencies it clears.
Practical use cases / 04
Where you would use this
A compliance officer documents which sanctions lists the bank screens and the legal basis for each choice.
A correspondent-banking team confirms that United States dollar payments are screened against OFAC lists, because dollar clearing imports United States expectations.
A screening analyst reads the programme tag on a match to learn which authority listed the party before deciding what the hit means.
Worked example / 05
Put the idea into a real situation
Illustrative example: a fictional euro-area bank, Cedar Union Bank, clears United States dollars through a fictional correspondent, Larkspur Clearing. Its documented policy is to screen the UN, EU, and OFAC lists on every payment, plus the United Kingdom list on any payment touching a United Kingdom party. On 14 April a name is added to the OFAC SDN list but does not yet appear on the EU list. Because Cedar Union Bank clears dollars, its filter already covers the OFAC list, so a USD 75,000.00 payment to that party is held the same day. Screening only the EU list would have missed it for the 9 days until the EU designation followed. The example shows why list selection follows exposure, not the bank's home jurisdiction alone.
Evidence & review / 07
Evidence & review
The UN, US (OFAC), EU, and UK authorities most relevant to internationally active payments banks.
What this brief simplifies: Omits export-control and non-proliferation lists and additional national authorities; compresses how UN measures are transposed into national and regional law.
Sources for this brief6
- Official requirement
United Nations Security Council Consolidated List ↗ — United Nations Security Council · UN Security Council Consolidated List and its status
Published in XML, HTML, and PDF formats and updated as committees act; each name is subject to the measures of its specific sanctions committee, not one uniform regime.
- Official requirement
Specially Designated Nationals and Blocked Persons List (SDN List) ↗ — US Department of the Treasury, Office of Foreign Assets Control · SDN and non-SDN lists
Updated continuously; machine-readable formats are distributed via OFAC's Sanctions List Service. Every list entry appearing in this site's examples is fictional.
- Official requirement
Consolidated list of persons, groups and entities subject to EU financial sanctions ↗ — European Commission · EU consolidated list of financial-sanctions targets
Covers only financial sanctions consisting of asset freezes; the EU Sanctions Map (sanctionsmap.eu) documents the broader restrictive-measure regimes.
- Official requirement
The UK Sanctions List ↗ — UK Government (FCDO and HM Treasury / OFSI) · UK Sanctions List
From 28 January 2026 the UK Sanctions List replaced OFSI's separate Consolidated List of Financial Sanctions Targets, which is no longer updated; OFSI provides a search tool over current designations.
- Official requirement
UK financial sanctions general guidance ↗ — Office of Financial Sanctions Implementation, HM Treasury · UK financial sanctions obligations
General in nature; regime-specific guidance and the underlying UK regulations take precedence over it.
- Simplified educational illustration
Payments Signal editorial teaching models — Payments Signal · Provenance scenario and the four-authority comparison
Used wherever diagrams, scenarios, figures, or example values are didactic constructions rather than sourced facts; every such use carries a simplifications disclosure. All people, companies, banks, and list entries in examples are fictional.