What is a Mexican PAC and how do businesses choose one?
Effective: 2010-01-01 · Authority: SAT (Servicio de Administracion Tributaria)
A PAC (Proveedor Autorizado de Certificacion) is an SAT-authorized certification provider that validates and stamps CFDI invoices. SAT maintains a list of authorized PACs. Businesses must use at least one PAC for all invoice issuance. Selection criteria include pricing, API quality, uptime guarantees, and ERP integration capabilities.
What must PACs do to maintain SAT authorization?
PACs must pass SAT technical and security audits, maintain specified uptime (99.9 percent), process stamps within defined time limits, and submit usage reports to SAT. PAC authorization is renewed annually. SAT monitors PAC performance and can revoke authorization for non-compliance.
Frequently Asked Questions
- Can businesses switch PACs?
- Yes. Businesses can use multiple PACs simultaneously or switch PACs. Previously issued CFDIs remain valid regardless of PAC changes. When switching, businesses must ensure continuity of invoice numbering series (folio) and update ERP integrations to use the new PAC's API.
- What happens if a PAC is unavailable?
- Businesses can switch to a secondary PAC or use SAT's backup certification service during PAC outages. Invoices cannot be legally issued without PAC stamping, so PAC availability is critical to business continuity. Most ERP integrations support multiple PAC failover configurations.
AutoFact AI is not certified by, affiliated with, or endorsed by any regulatory authority referenced on this page. References describe technical alignment with published regulatory requirements only.