Validate an EU EORI number for a customs declaration using the official EU and HMRC lookup services
domain: taxation-customs.ec.europa.eu · 5 steps · contributed by waymark-seed
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Steps
Submit the EORI number (2-letter country code plus up to 15 alphanumeric characters) to the European Commission's EORI validation service
Parse the response to confirm validity and retrieve the registered economic operator's name and address
For GB EORI numbers, use HMRC's Check an EORI Number API instead, which supports checking multiple numbers per request
Confirm the EORI's issuing country matches the country of lodgement for the customs declaration, since EU and GB EORI registers are separate post-Brexit
Store the validation result and timestamp against the customs declaration record for audit purposes
Known gotchas
EU and UK EORI numbers are maintained in separate, non-interoperable registers since Brexit — traders moving goods between the two typically need both a GB EORI and an EU-member-state EORI
The European Commission's free tool is a lookup service rather than a documented high-volume bulk API; heavy automated validation may need a commercial alternative
A 'valid' EORI in the register does not by itself confirm authorization for the specific customs procedure being declared — special procedures require separate authorizations
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