CFDI 4.0 + PAC Stamped
🇲🇽 Mexico

Mexico CFDI 4.0 — handled automatically

Every invoice issued in Mexico is generated as a valid CFDI 4.0 XML, signed with your CSD certificate, and stamped by a certified PAC in real time. The folio fiscal UUID is archived automatically. You never touch the SAT portal.

Tax Rate

16% IVA (8% border zones)

Filing Frequency

Monthly IVA declaration

Registration Threshold

No threshold — all businesses

Regulator

SAT (Servicio de Administración Tributaria)

What CFDI 4.0 actually requires

In Mexico, every invoice issued by a business must be a CFDI 4.0 — a digitally signed XML document stamped in real time by a government-authorised certifier called a PAC (Proveedor Autorizado de Certificación). The PAC returns a unique UUID called the folio fiscal, which is the invoice's legal identifier. Without it, the invoice does not exist in the eyes of SAT.

The standard IVA rate is 16%, dropping to 8% in border zones (Zona Libre de la Frontera Norte). Monthly IVA declarations are required. Cancelling an invoice is not a void — it is a separate CFDI cancellation request that requires the buyer's acknowledgement.

For businesses with high invoice volumes — retail, restaurants, services — the CFDI process is a continuous operational burden when handled manually. Every invoice, every day, through a PAC, with the UUID stored and referenced for every subsequent step.

What changes when you run on WiseLinkNow

Before
With WiseLinkNow
Manually build CFDI 4.0 XML for every invoice
CFDI 4.0 XML generated automatically from your invoice data
Manage your CSD certificate separately and sign each file
CSD signing handled in the background on every invoice
Log into a PAC dashboard to stamp each invoice
PAC submission happens at invoice generation — no portal access needed
Manually store and cross-reference folio fiscal UUIDs
UUID archived and linked to the invoice record automatically
Calculate border zone rate overrides by customer location
IVA applied at 16% or 8% based on customer location automatically
Fill monthly IVA declarations from spreadsheets
Monthly IVA declaration pre-populated from your transaction data

What happens when the rules change

When SAT updates CFDI schema versions, PAC certification requirements, or IVA rules, WiseLinkNow monitors official SAT publications and applies updates automatically. Your existing invoices are not affected — new invoices follow the updated specification from the day it goes live.

Compliance is monitored continuously. If something changes that affects your account, you are notified before it becomes your problem.

Ready to run compliant in Mexico?

Book a Fit Session with a senior consultant. We will use your actual numbers, show you exactly how CFDI 4.0 + PAC Stamped works in your setup, and give you a written recommendation.

Coming soon — join the waitlist

View all compliance coverage