Luxembourg IBAN at a Glance
| Country | Luxembourg (LU) |
| Length | 20 characters |
| Structure (after LU + check digits) | 3n bank, 13c account |
| Example IBAN | LU28 0019 4006 4475 0000 |
| SEPA member | Yes |
The example above is the published ISO registry sample for Luxembourg. It passes checksum validation but is not a real account.
How to Read a Luxembourg IBAN
Every IBAN starts the same way: the first two letters are the country code (LU) and the next two digits are the mod-97 check digits, computed over the entire number. What follows is Luxembourg's domestic account format: 3n bank, 13c account.
For an international transfer to Luxembourg you will typically need this IBAN plus the bank's SWIFT/BIC code. You can browse every SWIFT code in Luxembourg for free. Timing matters too: transfers do not settle on Luxembourg bank holidays, so check the calendar before sending anything urgent.
Frequently Asked Questions
How long is a Luxembourg IBAN?
Luxembourg IBANs are exactly 20 characters long, starting with LU followed by 2 check digits.
Is Luxembourg part of SEPA?
Yes, Luxembourg participates in SEPA (Single Euro Payments Area), so euro transfers to and from other SEPA countries are fast and low-cost.
Can I validate a Luxembourg IBAN without sending it anywhere?
Yes, use the checker above. Validation runs in your browser using the ISO 7064 mod-97 algorithm, the IBAN never leaves your device.
What is the structure of a Luxembourg IBAN?
After the country code and check digits, a Luxembourg IBAN contains: 3n bank, 13c account.