Is there one single EORI format for the whole EU?

No. The EU uses an EORI concept, but the format commonly reflects a country prefix followed by a national identifier. Always confirm the expected structure for the competent authority issuing the number.

Can an EORI start with a country code?

In many cases, yes. A common representation is a two-letter country code followed by a national identifier. Some systems also use additional digits or check rules.

Does “valid format” mean “active and usable”?

Not necessarily. Format validation checks structure, not legal status. Official systems may confirm existence or registration status depending on access and the authority.

EORI format and structure | What “valid format” means and common patterns

What “EORI format” means

In operational contexts, the term valid EORI format usually refers to a string that matches the expected country prefix and identifier pattern. This is useful for catching typos before a declaration is lodged. It is not the same as official confirmation.

Typical structure used in practice

Element	Description	Example representation
Country prefix	Two-letter ISO style prefix linked to the issuing customs authority.	PT, ES, DE, FR
National identifier	Digits or alphanumeric sequence used by that authority. Often aligned with national tax or registration numbers.	Varies by country
Additional rules	Some authorities apply internal check logic or length constraints.	Varies

Why format matters

Broker intake: Many brokers run basic format checks before accepting shipment data.
Electronic filing: Declaration systems may reject malformed identifiers at submission time.
Post-clearance matching: Amendments and queries require consistent operator identifiers.

What format checking cannot do

It cannot guarantee that an EORI exists in the authority record.
It cannot prove that the number is linked to a specific legal entity without authority confirmation.
It cannot replace an official decision or registration confirmation.

Apply by country

Identify the competent authority and entry point.

Validation explained

How official checks differ from format checks.

Common errors

Typical mistakes that look valid but fail in practice.

Glossary

Definitions used across the site.

Neutral reference notice: Information is for understanding EORI usage in customs processes. For eligibility, deadlines, and legal effect, rely on the competent customs authority. See Disclaimer, Methodology, and Sources.