Mexico supplier qualification checklist

Short answer

A Mexico supplier qualification checklist has four stages: desk checks against public registries, documents requested from the plant, independent confirmation of those documents, and a visit or audit. Do them in that order, so time on site is spent only on plants that passed the first three. Write the date and source beside every check.

Key facts

Stages: Registries, documents, confirmation, visit
Registries: INEGI DENUE, the IMMEX directory, the SAT 69-B list
Print: This page prints on one to two sheets

Stage 1: registries, from your desk

Write down the part and the processDrawing number, material, volume, destination, and the activity code the process maps to.
DENUEPlant listed at the address, activity code, staff band. Record the download date. See the DENUE guide.
IMMEX directoryProgram found by legal name and postal code; type and status. Record the edition date. See the IMMEX guide.
SAT 69-B listSearched by RFC, then by exact name. Record the status, both publication dates and the file date. See the 69-B guide.

Stage 2: documents to request

Legal name as registered, and the RFC.
A recent Constancia de Situación Fiscal.
The ISO 9001 or IATF 16949 certificate, if the customer requires one.
Two or three customer references you can call.
The equipment list for your process, and capacity against your volume.
PPAP or first-article capability data for a comparable part.
For US imports: who is the producer, the origin of key inputs, and whether it will provide a USMCA certification of origin. See the USMCA guide.

Stage 3: confirm independently

Compare the name and RFC on the Constancia with the quote, the purchase order and the invoice.
Search the 69-B list again by the RFC the supplier gave you.
Confirm each certificate with the certification body that issued it, or in IAF CertSEARCH.
Call the references. Ask what went wrong and how it was fixed.
Ask which entity holds the IMMEX program if the name does not match the directory.

Stage 4: the visit or audit

Capacity: the machines, presses or lines your part needs, and the shifts they run.
Quality: inspection equipment, records, and how nonconforming parts are contained.
Traceability: from raw material lot to shipped part.
Tooling: who owns it, where it sits, how it is maintained.
People and conditions: safety, staffing and working conditions.

Record it

For every line above, write what you checked, where, on what date, and what you could not check. A record that names its gaps can be defended in the meeting. Testigo does stage 1 for every plant on a shortlist of five and dates each line; see what Testigo checks.

Frequently asked questions

What should a supplier qualification checklist include?

It should cover four stages: registry checks (existence, export program, tax-fraud list), documents from the supplier (legal name, RFC, certificates, references), independent confirmation of those documents, and a visit or audit for capacity, quality and traceability. Record the date and source of every check.

How do I qualify a new supplier in Mexico?

Start with public registries from your desk, then ask the plant for its RFC, Constancia de Situación Fiscal, certificates and references. Confirm each document independently, and visit only the plants that pass. A registry check narrows the list; it does not approve a supplier.

What is the difference between qualifying and approving a supplier?

Qualifying establishes that a supplier is real, exports, is clear of tax-fraud lists and holds the certificates it claims. Approving is the customer’s decision that it can make a specific part to specification, usually through a process such as PPAP. Qualify first, then approve.

Mexico supplier qualification checklist.