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IBAN formats by country

Luxembourg IBAN Format (LU)

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A Luxembourg IBAN has 20 characters: LU, two check digits and a 16-character national account number (BBAN), which contains a 3-character bank code.

Length
20 characters
IBAN structure
LU2!n3!n13!c
Bank code length
3 characters
Example
LU28 0019 4006 4475 0000

Luxembourg IBAN structure

After the country code and check digits, the BBAN is 3 digits, then 13 letters or digits.

PartIn the exampleWhat it is
Country codeLUISO 3166 code of the country
Check digits28Two digits from the ISO 7064 MOD 97-10 calculation
Bank code0013 characters, national bank identifier
Account number9400644750000The rest of the BBAN, including any national check digits

The example is the sample IBAN given for this country in the IBAN registry, not an account to pay. Structure notation: n digits, a upper-case letters, c letters or digits; 4!n means exactly four digits.

Check a Luxembourg IBAN

Questions

How many characters does a Luxembourg IBAN have?
20 characters: the country code LU, two check digits and a BBAN of 16 characters.
What does a Luxembourg IBAN look like?
For example LU28 0019 4006 4475 0000 on paper, or LU280019400644750000 in electronic form.
Where is the bank code in a Luxembourg IBAN?
The national bank code has 3 characters, at positions 5 to 7 of the IBAN.
How do I check a Luxembourg IBAN?
Paste it into the IBAN checker on this site. It tests the length, the structure and the check digits in your browser.

Other countries with 20-character IBANs

All IBAN countries

Formats from the IBAN Registry (release 99, December 2024) that Swift publishes as the ISO 13616 registration authority, read from public mirrors of the registry. Check the current registry before relying on a format.