---
id: "ar_cbu"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["finances"]
country: ["AR"]
langs: ["es"]
quality: 100
url: "http://registry.apicrafter.io/datatype/ar_cbu"
---

# Argentine uniform bank account code (CBU) (`ar_cbu`)

> **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.

Clave Bancaria Uniforme, the 22-digit code that identifies a customer account at a bank in Argentina. The first block holds a 3-digit bank code, a 4-digit branch code and a check digit; the second block holds a 13-digit account number and another check digit.

- Parent datatype: `bankaccount`
- Personal data (PII): no
- Categories: Finances and banking (finances)
- Countries: Argentina (AR)
- Languages: Spanish (es)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^\d{8} ?\d{14}$
```

## Examples

- `0546356555736828044859` — Synthetic number with a valid check digit
- `23449187 47751308934223` — Synthetic number with a valid check digit
- `05463565 55736828044859` — The first example in its printed form
- `05463565557368280448597` (invalid example) — One character too many

## Mappings

- dpv: `pd:BankAccount`
- stdnum: `ar.cbu`

## Supported by tools

- `dataprep`
- `pythonstdnum`

## Translations

- es: Clave Bancaria Uniforme (CBU)

## Sources

- wikipedia: <https://es.wikipedia.org/wiki/Clave_Bancaria_Uniforme>
- other: <https://arthurdejong.org/python-stdnum/doc/2.2/stdnum.ar.cbu.html>

## Quality

Score 100/100.

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