CFDI is deeply embedded in Mexican tax law. There's no version of doing business in Mexico that skips it.

Mexico's Comprobante Fiscal Digital por Internet (CFDI), administered by SAT, has been mandatory for essentially all invoicing for years, requiring every invoice to be validated through a SAT-authorised PAC (Proveedor Autorizado de Certificación) before it's legally recognised. Complementos, additional structured data blocks, apply to specific transaction types including freight (Carta Porte).

For logistics businesses specifically, the Carta Porte complemento adds detailed shipment, route, and cargo data requirements on top of standard CFDI, and getting it wrong risks delays at inspection points. CargoWise Mexico e‑Invoicing Integration handles CFDI validation and Carta Porte data directly from inside your CargoWise environment.