Due Diligence Services in Mexico

Why Due Diligence in Mexico Needs an Investigator, Not a Database

The records that answer a buyer's questions exist, but they are not where a foreign screening tool looks. A company's registration, its bylaws, its officers and every change to them sit in the commercial registry of the state where it was formed. A federal portal now indexes the basic entry, but the deeds and many later filings are held in the state office, often on paper, and the register does not show shareholders at all. Ownership sits in notarial deeds and the company's own share ledger. Mexico has no public register of beneficial owners: companies have had to keep that information for the tax authority since 2022, and the 2025 anti-money laundering reform tightened the duty, but none of it is published. Our guide to how to verify a Mexican company sets out those records in the order worth working through them, and our guide to running a background check in Mexico covers the equivalent for an individual. A checklist written in London or New York assumes records Mexico does not keep in that form, and our note on why a due diligence checklist written abroad fails in Mexico sets out what to replace each item with. Where the question is not whether a counterparty is sound but what it owns and whether a claim against it could be enforced, that is asset tracing in Mexico.

Individuals are harder still. A Mexican name carries two surnames, so a database match without a date of birth, a tax number or a population identifier is unreliable, and neither identifier can be looked up by the public. The federal data protection law limits what banks, employers and schools will confirm. Court records are kept by each state's judiciary and by the federal courts, party indexes are searchable in some states and not in others, and the files are open only to the parties. Our guide to how to search court records in Mexico explains which court holds what. The tax authority publishes lists of companies found to have issued invoices for non-existent operations and of taxpayers with unpaid or canceled debts, and a tax compliance opinion confirms only that returns were filed and assessed debts paid, not that the returns were accurate.

That is why due diligence in Mexico is investigative work. Someone has to go to the registry, read the deed, find the ledger, ask the counterparties and the neighbors, visit the plant and reconcile all of it. Our investigating lawyers decide at the outset what a board, a bank, a court or a regulator will need to see, and the report is built to that standard.

Since 2025, Cartel Designations Changed the Risk

Eight Mexican cartels are now designated by the United States as foreign terrorist organizations, six since February 2025 and two more since July 2026. Knowingly providing material support to a designated group is a federal crime, the definition of support is broad, and support need not be direct. In 2025 the US Treasury cut three Mexican financial institutions out of the US payment system over cartel-linked laundering, and in July 2026 a US company agreed to pay more than USD 10 million to resolve charges over bribes paid through its Mexican customs brokers, part of which the Department of Justice said benefited a cartel. The risk in that case was not visible in the name of any counterparty. It sat in the payment chain, one layer beyond the brokers the company knew.

A name screen does not reveal nominee shareholders, changes of control, subcontracted performance, a route access fee or a payment that ultimately benefits a designated group, and an entity owned 50 percent or more by blocked persons is blocked whether or not it appears on any list. An undisclosed link to a designated group in your supply chain may create sanctions and material-support exposure for the contracting company and, depending on the facts, for others in the group. Our enhanced due diligence establishes who owns, who controls, who performs the work and who benefits from the money. Our analysis of the cartel designations sets out the law and the cases in more detail.

What You Receive

A written report in English, with the Spanish originals of every document attached. It opens with a risk rating and the reasons for it, sets out each finding with the evidence behind it and the source it came from, states what could not be confirmed and why, and closes with the questions we would put to the counterparty before signing. Forensic accounting findings are presented with the underlying figures. The report is signed off by an investigating lawyer and is written so that it can be shared with a bank, an investment committee, an insurer or a regulator, and relied on in a dispute if it comes to that. Preliminary findings are given by call or short memo as soon as they are known, so that a deal timetable is not held to the report date.

How Much Does Due Diligence in Mexico Cost, and How Long Does It Take?

Work is priced per subject or per stage, as a fixed fee agreed before we start. There are two tiers. Rapid screening checks a company or an individual and its principals against sanctions, politically exposed person and enforcement lists, the tax authority's lists, registries, litigation indexes and media, with analyst validation and a preliminary risk classification, and is returned within hours to three business days. Enhanced due diligence adds the registry file, the beneficial ownership and control analysis, closed-source and field inquiries, forensic accounting where instructed and a full written report. Preliminary findings are usually available within about 72 hours and the full report in seven to ten business days.

What moves the price is the number of subjects, the number of states to be searched in person, the depth of financial work, site visits outside the main cities and urgency. Transaction work is quoted in stages against the deal timetable, and volume screening programs are priced per month. We quote within one business day of receiving the names and the question you need answered.