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MX · Country and locale facts

Document format and locale facts for Mexico

Use these defaults as a practical starting point for presentation. ISO/CLDR formatting facts are not legal or tax advice, and reviewed jurisdiction guidance is identified separately.

Currency & locale

MXN · es-MX

Paper & date

LETTER · DD/MM/YYYY (DMY)

Language

es (official) · LTR

Text system

gregory calendar · latn digits

Why these defaults?

The country code comes from ISO 3166. Unicode CLDR supplies presentation-oriented locale, currency, paper, date, language, calendar, numbering, and direction metadata. Defaults reduce setup time; they do not decide what a valid document must contain.

Recorded official or regional-official language tags: es.

Limited guidance reviewed

Document vocabulary and checks

SAT's national CFDI 4.0 page supports the cited fiscal particulars and identifiers. Record retention and a claim-level review of the current electronic issuance, certification and cancellation boundary are not yet evidenced here, so this pack remains partial. Sector complements, export cases and current SAT catalogs remain transaction-specific checks.

Evidence snapshot: 1 official source · last reviewed 2026-07-18. This is scoped guidance, not a jurisdiction-wide compliance certification.

Tax labels: IVA. Business identifier labels: Registro Federal de Contribuyentes (RFC).

  • Required when applicable: A Mexican CFDI requires the issuer and recipient RFC, fiscal regimes, recipient fiscal postal code and use code, SAT folio and digital seals, issue place and date, item details, values, totals, tax breakdowns, and payment information when applicable.Evidence MX_SAT_CFDI_REQUIREMENTS · reviewed 2026-07-18 · review by 2027-01-18 · automation advisory only

Identifier format guidance: See the relevant authority.

Reviewed official sources

Registry provenance

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