How to Prevent Business Fraud in Mexico
Most cross-border fraud involving Mexican counterparties is visible in public records before the money moves. The recurring patterns are shell entities with no operating history, suppliers on the SAT 69-B invoice-mill blacklist, predecessor companies abandoned with their debt, signatories without authority to bind the company, and litigation histories that show a counterparty which does not pay. Each is verifiable before the first payment.
Fraud prevention in a cross-border relationship is not about intuition. It is about checking a short list of things that are on the record, and noticing when the answers do not line up with what you have been told.
Nine red flags, and how to verify each
1. The company was incorporated recently but is presented as established
A supplier claiming fifteen years in the market whose folio mercantil dates from last year is the simplest and most common discrepancy.
Check: incorporation date on the Public Registry of Commerce record against the acta constitutiva.
2. Capital that does not match the contract
An entity with minimal registered capital proposing a multi-million-dollar supply agreement is either undercapitalized or a front for something else.
Check: registered capital stock on the registry record.
3. The counterparty appears on the SAT 69-B lists
Under Article 69-B of the Federal Tax Code, the SAT publishes taxpayers presumed to have issued invoices for operations that never occurred — EFOS, empresas que facturan operaciones simuladas. Presumed first, then definitive if the presumption is not rebutted, with the definitive list published in the Diario Oficial de la Federación.
Invoices from a definitively listed taxpayer have no fiscal effect. Whoever used them to support a deduction has to prove the goods or services were genuinely received, or amend. This is not only the supplier's problem — the cost lands on the buyer.
Check: both the presumed and definitive 69-B lists, by RFC, before the first payment and periodically thereafter.
4. The person signing cannot bind the company
Mexican powers of attorney are notarized and can be limited by subject and by amount. Acts of administration and acts of ownership are distinct powers. A contract signed by someone holding the wrong one is defective, and the defect only becomes visible when you try to enforce.
Check: the notarized power of attorney, its scope and whether it has been revoked.
5. A predecessor entity was abandoned
The classic structuring pattern: an operating company accumulates debt and judgments, is left dormant, and the same shareholders reappear behind a newly incorporated entity with a similar name and a clean record.
Check: the individual shareholders, not just the entity, and what else they control.
6. The litigation profile shows a counterparty that does not pay
Being repeatedly named as defendant in commercial collection suits is the clearest available signal that a company does not honor its obligations.
Check: a nationwide litigation search across all four judicial systems, with attention to plaintiff-versus-defendant position. See how to check lawsuits in Mexico.
7. Bank details change mid-relationship
A request to redirect payment to a new account — particularly one whose holder name does not match the contracting entity, or one held abroad — is business email compromise until proven otherwise.
Check: confirm by voice on a number you already held, never one supplied in the same message. Confirm the account holder name matches the entity exactly.
8. The address is a mail drop or a residence
A registered domicile that is a virtual office or a private home, for a company claiming industrial capacity, does not match the story.
Check: the registered domicile, and where it matters, a physical site verification.
9. Pressure to skip verification
Urgency is the operating environment of fraud. A counterparty that cannot wait a day for a records check on a deal worth verifying is telling you something.
Check: nothing — this one is behavioral. Treat it as a reason to check more, not less.
A minimum standard before the first payment
| Step | Source | Rules out |
|---|---|---|
| Confirm legal existence | Public Registry of Commerce | Fictitious entity |
| Validate RFC and status | SAT | Inactive or mismatched taxpayer |
| Screen SAT 69-B | SAT published lists | Invoice mill; lost deductions |
| Nationwide litigation search | Four judicial systems | Non-paying or insolvent counterparty |
| Verify signing authority | Notarized power of attorney | Unenforceable contract |
| Identify shareholders | Registry and related entities | Abandoned predecessor pattern |
| Sanctions screening | OFAC and debarment lists | Regulatory exposure |
Ongoing exposure, not a one-time check
A supplier that was clean at onboarding can appear on the 69-B presumed list next quarter, or be named in three new collection suits over a year. Where credit is extended or the relationship is material, re-verification on a schedule — or continuous monitoring through the API — is the difference between catching a deterioration and absorbing it.
Frequently asked questions
What is the most common fraud pattern involving Mexican suppliers?
Two dominate. The shell entity with no operating substance created to take a prepayment, and the invoice mill — a supplier on the SAT 69-B list whose invoices later prove undeductible for the buyer.
Can I check a Mexican company before signing anything?
Yes, and it does not require the counterparty's cooperation or consent. These are public records.
How much does verification cost relative to the risk?
A BLOC report starts at USD 40 for a company. The exposure it is meant to catch is measured in prepayments, undeductible invoices and unenforceable contracts.
What do I do if the check comes back with red flags?
It rarely means walking away. It usually means changing terms — reducing or eliminating prepayment, adding guarantees, shortening the contract, or asking the counterparty to explain the specific finding.
Is this suitable for screening employees?
No. BLOC supports commercial counterparty verification. Its reports are not intended for employment, consumer credit, insurance or housing decisions.
Check before you pay
Registry, litigation, SAT 69-B, sanctions and ownership on any Mexican company or individual. From USD 30.