IBAN from Luxembourg

The Luxembourg IBAN consists of exactly 20 characters and includes three elements:

• Country code (positions 1–2): Luxembourg identifies Luxembourg according to the ISO 3166-1 standard.
• Check digits (positions 3–4): used to automatically verify that the IBAN is valid.
• BBAN (positions 5–20): corresponds to the national account number, whose structure depends on Luxembourg.

The Luxembourg IBAN always contains exactly 20 characters. This length is defined by the ISO 13616 standard. An IBAN with a different number of characters is formally invalid and will be rejected by the banking system.

For reference: IBANs vary by country, ranging from 15 to 34 characters. The Luxembourg IBAN length complies with the national standard.

You can find your IBAN in the following places:

• Online banking or app: once logged in, go to "Account overview" or "Account details." Your IBAN can usually be copied with a single click.
• Bank statement: every official Issue with interpolation statement shows your full banking details (IBAN and BIC), typically at the top of the document.

Tip: the fastest option is the app, your IBAN can usually be copied in one click and shared without errors.

Yes, but with an important distinction depending on the destination country:

• Within the SEPA zone (32 countries, including all EU member states, Switzerland, Norway, and Iceland): your IBAN can be used for euro transfers within the SEPA zone. A BIC is generally not required for SEPA transfers.
• Outside the SEPA zone (e.g., United States, Canada, Asia): your IBAN is accepted, but must be combined with the SWIFT / BIC of Issue with interpolation. In addition, many receiving banks outside Europe require the bank's full address.
• Receiving international payments: you can also use your Issue with interpolation IBAN to receive international transfers. Provide the sender with your IBAN and BIC, for payments from non-SEPA countries, the BIC is essential.

Note: for transfers in foreign currencies (e.g., USD, GBP), currency conversion fees may apply. Check the applicable terms with Issue with interpolation in advance.

No. Neither verifying nor calculating an IBAN constitutes a legally binding confirmation. A formally correct IBAN means:

• ✅ Valid check digits according to the Modulo-97 method
• ✅ Length and format compliant with the Luxembourg standard
• ❌ No indication of whether the account is active or available
• ❌ No indication of the account holder's identity
• ❌ No indication of whether the account exists

Tip: always confirm the IBAN directly with the recipient before making a transfer, especially for new business relationships or large amounts.

It depends on the error in the IBAN, there are two scenarios:

Formally invalid IBAN: if the check digits are incorrect, the banking system automatically detects the error and rejects the transfer. The money doesn't leave your account, and there's no financial loss.

Formally valid but incorrect IBAN: this is where things get critical. If the IBAN contains a transposed digit that happens to form another formally valid combination, the transfer is sent to the wrong account. In that case:

• The recipient's bank may assist in recovering the funds
• Your bank can initiate a recall procedure upon request
• A refund is not guaranteed, particularly if the funds have already been withdrawn
• For international transfers outside the SEPA zone, recovery is more complex and may involve fees

Recommendation: verify every IBAN before making a transfer using our free IBAN checker to confirm its formal validity, and check directly with the recipient if in doubt. This is especially important for large amounts or new business relationships.