| État Membre | Structure (FR) | Format (FR)* |
| AT-Autriche | ATU99999999 | 1 block of 9 characters (fr) |
| BE-Belgique | BE0999999999 | 1 block of 10 digits |
| BG-Bulgarie | BG999999999 or BG9999999999 (fr) |
1 block of 9 digits or1 block of 10 digits (fr) |
| CY-Chypre | CY99999999L | 1 block of 9 characters (fr) |
| CZ-République tchèque | CZ99999999 or CZ999999999 or CZ9999999999 (fr) |
1 block of either 8, 9 or 10 digits (fr) |
| DE-Allemagne | DE999999999 | 1 block of 9 digits (fr) |
| DK-Danemark | DK99 99 99 99 | 4 blocks of 2 digits (fr) |
| EE-Estonie | EE999999999 | 1 block of 9 digits (fr) |
| EL-Grèce | EL999999999 | 1 block of 9 digits (fr) |
| ES-Espagne | ESX9999999X4 | 1 block of 9 characters (fr) |
| FI-Finlande | FI99999999 | 1 block of 8 digits (fr) |
| FR-France | FRXX 999999999 | 1 block of 2 characters, 1 block of 9 digits (fr) |
| GB-Royaume-Uni | GB999 9999 99 or GB999 9999 99 9995 or GBGD9996 or GBHA9997 (fr) |
1 block of 3 digits, 1 block of 4 digits and 1 block of 2 digits; or the above followed by a block of 3 digits; or 1 block of 5 characters (fr) |
| HR-Croatie | HR99999999999 | 1 block of 11 digits |
| HU-Hongrie | HU99999999 | 1 block of 8 digits (fr) |
| IE-Irlande | IE9S99999L IE9999999WI |
1 block of 8 characters or 1 block of 9 characters |
| IT-Italie | IT99999999999 | 1 block of 11 digits (fr) |
| LT-Lituanie | LT999999999 or LT999999999999 (fr) |
1 block of 9 digits, or 1 block of 12 digits (fr) |
| LU-Luxembourg | LU99999999 | 1 block of 8 digits (fr) |
| LV-Lettonie | LV99999999999 | 1 block of 11 digits (fr) |
| MT-Malte | MT99999999 | 1 block of 8 digits (fr) |
| NL-Pays-Bas | NL999999999B998 | 1 block of 12 characters (fr) |
| PL-Pologne | PL9999999999 | 1 block of 10 digits (fr) |
| PT-Portugal | PT999999999 | 1 block of 9 digits (fr) |
| RO-Roumanie | RO999999999 | 1 block of minimum 2 digits and maximum 10 digits (fr) |
| SE-Suède | SE999999999999 | 1 block of 12 digits (fr) |
| SI-Slovénie | SI99999999 | 1 block of 8 digits (fr) |
| SK-Slovaquie | SK9999999999 | 1 block of 10 digits (fr) |
Remarks:
*: Format excludes 2 letter alpha prefix
9: A digit
X: A letter or a digit
S: A letter; a digit; "+" or "*"
L: A letter (FR)
Notes:
1: The 1st position following the prefix is always "U".
2: The first digit following the prefix is always zero ('0').
3: The (new) 10-digit format is the result of adding a leading zero to the (old) 9-digit format.
4: The first and last characters may be alpha or numeric; but they may not both be numeric.
5: Identifies branch traders.
6: Identifies Government Departments.
7: Identifies Health Authorities.
8: The 10th position following the prefix is always "B". (FR)