> ## Documentation Index
> Fetch the complete documentation index at: https://docs.coverbase.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Mexico

> What Coverbase asks a supplier in Mexico for, and which of those rules block a submission.

[User guides](/user-guides/overview) / [Supplier countries](/user-guides/supplier-countries/overview)

A supplier whose bank account is held in Mexico sees the fields below. The country is chosen on the form, and changing it changes the fields, so a supplier is never asked for a detail their country does not use.

## Bank details

| Field          | Requirement | Format                                        | Notes                                                                        |
| -------------- | ----------- | --------------------------------------------- | ---------------------------------------------------------------------------- |
| Bank name      | Optional    | up to 60 characters                           |                                                                              |
| Bank code      | Optional    | no length limit, digits only                  |                                                                              |
| Branch code    | Optional    | no length limit, digits only                  |                                                                              |
| Account number | Optional    | 10 to 11 characters, digits only              | 10 or 11 digits. The CLABE below is what the payment uses.                   |
| Check digit    | Optional    | no length limit, digits only                  |                                                                              |
| CLABE          | Required    | 18 characters, digits only, CLABE check digit | 18 digits: 3-digit bank code, 3-digit branch, 11-digit account, check digit. |
| SWIFT/BIC      | Optional    | 8 to 11 characters, letters and digits        | 8 or 11 characters, e.g. BOFAUS3N. Needed for a payment by wire.             |
| Account type   | Optional    | no length limit, one of: checking, savings    | Checking unless the bank issued the account as a savings account.            |

### IBAN

An IBAN is optional for Mexico. It is up to 34 characters and is checked against the ISO 7064 MOD-97 algorithm, which catches a mistyped or transposed digit before the details reach your finance system.

## Tax and company registrations

| Registration | Requirement | Format                                                         | Notes                                            |
| ------------ | ----------- | -------------------------------------------------------------- | ------------------------------------------------ |
| RFC          | Required    | 12 to 13 characters, letters and digits, RFC control character | 12 characters for companies, 13 for individuals. |

## Where these rules come from

Oracle Fusion Cash Management 26c MX validations; Banxico CLABE spec. The CLABE is required and the account number is not: the CLABE contains the bank, the branch and the account, and is what Mexican suppliers quote.

The rules on this page are confirmed against a primary source, so they are enforced strictly.

Configuration version `2026.09.1`. Your organization can override any of these rules for its own suppliers.

## Related

<CardGroup cols={2}>
  <Card title="Supplier countries" icon="globe" href="/user-guides/supplier-countries/overview">
    Every country Coverbase validates, side by side.
  </Card>

  <Card title="Supplier information guide" icon="building-columns" href="/user-guides/supplier-information">
    How these details are collected, reviewed, and handed to your finance system.
  </Card>
</CardGroup>