What happens if you pay a sanctioned supplier by mistake?

Short answer: a payment to a listed supplier can be a sanctions violation even if nobody knew, because it makes funds available to a person under an asset freeze. Regulators can impose a civil penalty, and the outcome depends heavily on how fast you stop, whether you disclose voluntarily and whether you had a reasonable screening process.

Key definitions

Making funds available: paying, directly or indirectly, a person under an asset freeze. It is prohibited under US, EU and UK rules.

Voluntary self-disclosure: telling the regulator about a possible violation before it finds out by itself. It is a mitigating factor in US and UK enforcement.

Apparent violation: the term OFAC uses for conduct that appears to breach sanctions, before or without a formal finding.

Real cases with official sources

Amounts from the official pages, checked on 5 November 2026. In the Herbert Smith Freehills case the voluntary disclosure earned a 50% reduction according to the penalty notice.

What regulators look at

OFAC's Enforcement Guidelines list general factors that affect a penalty, including:

• whether the conduct was wilful or reckless;
• awareness of the conduct;
• harm to the objectives of the sanctions programme;
• the size and sophistication of the company;
• the existence and adequacy of a compliance programme;
• remedial response and cooperation, including voluntary self-disclosure.

A mistake made despite a working screening process is treated very differently from a mistake made because nobody checked.

What to do right away

1. Stop further payments and any pending orders with that supplier.
2. Confirm the match. Compare name, address, registration number and owners with the official listing.
3. Do not try to reverse the payment on your own if funds are already frozen: banks and regulators have specific procedures, and unfreezing usually needs a licence.
4. Preserve records: invoices, payment orders, screening logs and emails.
5. Get legal advice on reporting duties, voluntary disclosure and licences in each jurisdiction involved.
6. Fix the cause: add the missing screening step, rescreen all suppliers and check bank account changes before payments.

How to prevent it

• Screen every supplier before the first payment and rescreen the whole list every day.
• Screen the supplier's owners as well, under the 50% rule.
• Check name variants, transliterations and corporate suffixes.
• Re-check before paying to a new or changed bank account.
• Keep an audit trail of every check and decision.

How to automate it

Unicorn Intelligence checks all your suppliers and customers every day against the official sanctions lists and alerts you before the next payment, also inside your accounting software or CRM. It is an informational tool: legal decisions and obligations remain the company's.

New accounts also get a 50 $ credit.

Informative content: decisions and legal obligations remain yours.