---
id: "bban"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["finances"]
langs: ["common"]
quality: 90
url: "https://registry.apicrafter.io/datatype/bban"
---

# Basic bank account number (BBAN) (`bban`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

National bank account number that forms the domestic part of an IBAN - the characters after the country code and the two IBAN check digits (ISO 13616). Its length and structure are set per country, from 11 to 29 letters and digits; it usually holds a bank or branch code and the account number, and some countries add national check digits. A BBAN is only validated against its country's structure, so the regexp here checks the length and characters only.

- Parent datatype: `bankaccount`
- Personal data (PII): no
- Categories: Finances and banking (finances)
- Countries: global
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^[A-Z0-9]{11,29}$
```

## Examples

- `WEST12345698765432` — BBAN of the British example IBAN GB82 WEST 1234 5698 7654 32
- `435411161155` — BBAN of the Belgian IBAN BE31435411161155 (python-stdnum documentation)
- `01101050000010547023795` — BBAN of the Greek IBAN GR16 0110 1050 0000 1054 7023 795 (python-stdnum documentation)
- `4354111611` (invalid example) — ten characters, shorter than any BBAN

## Mappings

- fibo: <https://spec.edmcouncil.org/fibo/ontology/FBC/ProductsAndServices/ClientsAndAccounts/BasicBankAccountIdentifier>

## Translations

- ru: Базовый номер банковского счёта (BBAN)

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/International_Bank_Account_Number>
- other: <https://arthurdejong.org/python-stdnum/doc/2.2/stdnum.iban>

## Quality

Score 90/100. Missing: detector coverage.

JSON: <https://registry.apicrafter.io/api/v1/datatypes/bban.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/finances/bban.yaml>