| Mitgliedstaat | Structure (DE) | Format (DE)* |
| AT-Oesterreich | ATU99999999 | 1 block of 9 characters (de) |
| BE-Belgien | BE0999999999 | 1 block of 10 digits |
| BG-Bulgarien | BG999999999 or BG9999999999 (de) |
1 block of 9 digits or1 block of 10 digits (de) |
| CY-Zypern | CY99999999L | 1 block of 9 characters (de) |
| CZ-Tschechische Republik | CZ99999999 or CZ999999999 or CZ9999999999 (de) |
1 block of either 8, 9 or 10 digits (de) |
| DE-Deutschland | DE999999999 | 1 block of 9 digits (de) |
| DK-Dänemark | DK99 99 99 99 | 4 blocks of 2 digits (de) |
| EE-Estland | EE999999999 | 1 block of 9 digits (de) |
| EL-Griechenland | EL999999999 | 1 block of 9 digits (de) |
| ES-Spanien | ESX9999999X4 | 1 block of 9 characters (de) |
| FI-Finnland | FI99999999 | 1 block of 8 digits (de) |
| FR-Frankreich | FRXX 999999999 | 1 block of 2 characters, 1 block of 9 digits (de) |
| GB-Vereinigtes Königreich | GB999 9999 99 or GB999 9999 99 9995 or GBGD9996 or GBHA9997 (de) |
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 (de) |
| HR-Kroatien | HR99999999999 | 1 block of 11 digits |
| HU-Ungarn | HU99999999 | 1 block of 8 digits (de) |
| IE-Irland | IE9S99999L IE9999999WI |
1 block of 8 characters or 1 block of 9 characters |
| IT-Italien | IT99999999999 | 1 block of 11 digits (de) |
| LT-Litauen | LT999999999 or LT999999999999 (de) |
1 block of 9 digits, or 1 block of 12 digits (de) |
| LU-Luxemburg | LU99999999 | 1 block of 8 digits (de) |
| LV-Lettland | LV99999999999 | 1 block of 11 digits (de) |
| MT-Malta | MT99999999 | 1 block of 8 digits (de) |
| NL-Niederlande | NL999999999B998 | 1 block of 12 characters (de) |
| PL-Polen | PL9999999999 | 1 block of 10 digits (de) |
| PT-Portugal | PT999999999 | 1 block of 9 digits (de) |
| RO-Rumänien | RO999999999 | 1 block of minimum 2 digits and maximum 10 digits (de) |
| SE-Schweden | SE999999999999 | 1 block of 12 digits (de) |
| SI-Slowenien | SI99999999 | 1 block of 8 digits (de) |
| SK-Slowakei | SK9999999999 | 1 block of 10 digits (de) |
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 (DE)
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". (DE)