Spain IBAN
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Your bank’s statement is the binding source of your IBAN. Calculated from the SWIFT IBAN Registry, updated September 17, 2026. Not a service of any bank. · Disclaimer
An IBAN from Spain has 24 characters. Enter the 20-digit CCC (entidad, oficina, DC, cuenta) above to calculate one, or switch to “Check” to test an IBAN you have.
How an IBAN from Spain is built
The registry’s example, ES91 2100 0418 4502 0005 1332, split into its parts:
- CountryES
- Check digits91
- Entidad2100
- Oficina0418
- DC45
- Cuenta (account number)0200051332
| Part | Positions | Format | In the example |
|---|---|---|---|
| Country | 1–2 | 2 letters | ES |
| Check digits | 3–4 | 2 digits | 91 |
| Entidad | 5–8 | 4 digits | 2100 |
| Oficina | 9–12 | 4 digits | 0418 |
| DC (Spanish control digits) | 13–14 | 2 digits | 45 |
| Cuenta (account number) | 15–24 | 10 digits | 0200051332 |
What the parts are called in Spain
A Spanish IBAN has 24 characters: ES, two check digits and the 20-digit CCC (Código Cuenta Cliente): entidad (4, the bank), oficina (4, the branch), DC (2 control digits) and cuenta (10).
The two DC digits check the bank/branch and the account number separately. If you only know entidad, oficina and cuenta, the calculator works out the DC.
The check digits of ES91 2100 0418 4502 0005 1332
- Move the first four characters to the end: 21000418450200051332ES91
- Replace each letter by a number (A = 10, B = 11 … Z = 35): 21000418450200051332142891
- Divide that number by 97. The remainder is 1; a valid IBAN always leaves 1.
- To calculate the check digits instead, put 00 in their place: the remainder is 7, and 98 − 7 = 91.
The national check inside the account number
The DC are two mod-11 digits. The first covers entidad and oficina (preceded by 00), the second the 10-digit account number, with weights 1, 2, 4, 8, 5, 10, 9, 7, 3, 6. For the example they are 45.
Registry facts
- SEPA
- yes (per SWIFT IBAN Registry)
- IBAN also used in
- —
- IBAN in use since
- April 2007
- Format last updated
- September 2016
- Registered by
- Asociacion Espanola de Banca Privada (AEB)
Questions people ask
How many characters does an IBAN from Spain have?
24: the country code, 2 check digits and a 20-character national number (4 digits + 4 digits + 1 digit + 1 digit + 10 digits).
Is the Spanish IBAN just the CCC with ES in front?
Yes: ES, two IBAN check digits, then the 20 digits of the CCC unchanged.
What are the DC digits?
Two control digits inside the CCC. The first checks entidad and oficina, the second the account number.