How to Verify a Company in Mexico

US and Canadian companies increasingly source, invest and partner in Mexico. The due diligence habits that work at home do not transfer cleanly. There is no single national database to query, no equivalent of a nationwide corporate search, and court records live in systems that do not talk to each other.

This guide walks through what actually has to be checked, in the order that catches problems earliest. If your goal is to reduce counterparty risk before signing or paying a supplier, see how to prevent business fraud in Mexico.

Step 1: Confirm the company legally exists

Every Mexican commercial entity should be inscribed in the Registro Público de Comercio, the Public Registry of Commerce. Inscription produces a folio mercantil electrónico, a unique registry number that ties the company to its incorporation record.

The founding document is the acta constitutiva, a notarized deed that states the corporate purpose, the initial shareholders, the capital structure and who holds power of attorney. Ask for it, and confirm the folio on the deed matches what the registry shows.

What to look for on the registry record

• Date of incorporation — a counterparty presented as established that was registered three months ago is a red flag
• Registered corporate purpose, and whether it matches what they say they do
• Capital stock, and whether it is plausible for the contract size being discussed
• Legal representatives and the scope of their powers — the person signing may not be authorized to bind the company

Step 2: Validate the RFC tax identity

The RFC (Registro Federal de Contribuyentes) is the tax ID issued by Mexico's tax authority, the SAT. For a company it is 12 characters; for an individual, 13. It appears on every invoice they will ever send you.

Two things matter here. First, that the RFC is real and belongs to the entity named on the contract. Second, that the entity is active — a suspended or cancelled RFC means invoices cannot be issued validly.

Step 3: Check the SAT 69-B blacklist

This is the step almost no foreign buyer knows about, and the one with the most direct financial consequence.

Under Article 69-B of the Mexican Federal Tax Code, the SAT publishes lists of taxpayers presumed to have issued invoices for operations that never happened. These are known as EFOS — Empresas que Facturan Operaciones Simuladas , companies that invoice simulated operations.

The list has two stages. A company first appears as presunto, presumed, and has a window to disprove the presumption. If it fails, it moves to the definitivo list, published in the Diario Oficial de la Federación.

For a US company paying a Mexican supplier, this turns an invoice you already paid into a deduction you may not be able to defend. It is worth checking before the first payment, not after an audit.

Step 4: Search litigation records

A company can be properly registered, tax-current, and still be a defendant in dozens of active commercial disputes. Litigation history is the clearest available signal of how a counterparty behaves when a deal goes wrong.

Mexico's judiciary is split across four broad categories: state common-law courts, federal jurisdictional bodies, federal labor authorities and state labor authorities. Together they run to thousands of individual courts. A search that covers one state, or only the federal system, is not a search.

For the mechanics of that search, see how to check lawsuits in Mexico.

What matters in the results

• Volume relative to company size. Forty disputes is normal for a large industrial group and alarming for a twelve-person consultancy
• Position. A company that is usually the plaintiff collects from customers. One that is usually the defendant fails to pay suppliers
• Recency. Litigation from 2009 says little. Three new commercial suits this year says a great deal
• Type. Commercial collection suits, insolvency proceedings and labor claims each point at different failure modes

Step 5: Map ownership and related entities

The last step is the one that catches deliberate structuring. Who owns the company, what else do those people own, and has a predecessor entity already failed?

A recurring pattern in cross-border fraud: an operating company accumulates debt and litigation, is quietly abandoned, and the same shareholders reappear behind a newly incorporated entity with a clean record and a similar name. Checking the entity in isolation shows nothing. Checking the people behind it shows the history.

This is also where anti-money-laundering and beneficial ownership requirements land, if your organization is subject to them.

How long this takes

Check	Manually	With BLOC
Registry verification	5 to 15 business days per registry office, and there are 147	Included
Litigation search, nationwide	Physical visits across thousands of courts	Included
SAT 69-B and sanctions screening	Separate lookups per source	Included
Ownership and related entities	Registry-by-registry reconstruction	Included
Total	Weeks, plus travel and fees	One report, USD 40

A practical checklist

1. Request the acta constitutiva and the folio mercantil
2. Confirm the folio against the Public Registry of Commerce
3. Verify the RFC belongs to the entity on the contract and is active
4. Check both SAT 69-B lists, presumed and definitive
5. Run a nationwide litigation search, not state-by-state
6. Screen against OFAC and government supplier sanction lists
7. Identify shareholders and their other companies
8. Re-check before renewal, or monitor continuously if credit is extended