Mexico Company Register: How to Search the Registro Público de Comercio and Verify Mexican Companies (2026)

1. What is the Mexican company register?

The Registro Público de Comercio (RPC, the Public Registry of Commerce) is where Mexico publishes the commercial acts that, by law, must be registered to take effect against third parties. Under Article 18 of the Commercial Code (Código de Comercio) it is run jointly by the Secretaría de Economía and the authorities that keep the property registry in each state and in Mexico City, under coordination agreements. That split shows up everywhere in practice: the software and the databases belong to the Federal Government, while the states run the offices and set the fees.

Registration is compulsory for every sociedad mercantil for its incorporation, transformation, merger, split, dissolution, and liquidation, and optional for individual merchants. It runs on SIGER 2.0, the Sistema Integral de Gestión Registral, which went live in 2015 and was implemented across the country between 2015 and 2017 as one national database that updates in real time. Before that, finding a company's file meant going to the counter of the right one of 271 registry offices. Mexico City's office only migrated to SIGER 2.0 in August 2023, and the ministry's notice said its folios would move over gradually.

In short: the RPC tells you a company exists and what it formally did, the PSM shows what it had to announce, the RUG shows what it pledged, and DENUE tells you where it operates. None of them gives you the whole picture on its own.

2. How to search the Registro Público de Comercio step by step

There is no anonymous search. The Secretaría de Economía's own instructions start with creating a user account, and every consultation runs behind a login. The portal, its FAQ, and its manuals are in Spanish, and we found no English version.

1. Open SIGER 2.0 on rpc.economia.gob.mx

   Go to the SIGER 2.0 portal of the Secretaría de Economía. The landing page explains what the register is and offers one way in, the Ingresa button. It has no company search field.

   

2. Register a user account

   Choose Ingresa, then "Registrar nuevo usuario", fill in the form, accept the terms of use and the privacy notice, and type the CAPTCHA characters. The operating rules require anyone who consults the database to give a full name, address, email address, and CURP, the Mexican population registry key, and the privacy notice also lists nationality, phone number, and RFC among the data it may collect. An activation link and a temporary password arrive by email.

3. Log in

   Each login asks for the username (your registered email address), the password, a security check in which you type the characters shown on screen, and a tick accepting the terms of use. Those terms forbid, among other things, extracting all or part of the database.

4. Run a public consultation

   In the menu choose "Consultas y Estadísticas" and then "Consulta pública". Search by folio mercantil electrónico, name or razón social, partner name, or registry office, and select Buscar. The list of matches shows each folio, the company name, and the registry office that holds it.

5. Open the folio, paying the state fee if one applies

   Select the folio and choose Revisar. Where the state charges for consultations, SIGER shows the amount, which you pay under the rules of the state where the folio is registered before entering the payment reference (línea de captura) and choosing Continuar Consulta. SIGER then shows the folio's cover sheet, and each registered act can be downloaded as a PDF of its summary form. What you see are the summary forms, not the deeds.

3. What data is public and what it costs

Mexico does not publish one price for its register. The Commercial Code lets anyone consult the databases and request certificates on payment of the corresponding fees, and the SIGER user manual says whether a consultation or certificate is charged depends on the local tax law of the state where the folio is registered. The SIGER FAQ sends you to each state's rules rather than to a national tariff.

What you will not find in the RPC at all: financial statements, revenue, employee counts, or phone numbers and email addresses. The list of what a folio records, in Article 21 of the Commercial Code, covers identity, line of business, domicile, corporate acts, and a few other items such as share and bond issues and security interests. None of those four appear on it.

Financial statements live elsewhere, and mostly not in public. A sociedad anónima presents its annual report, financial statements included, to its shareholders' meeting. Under Article 177 of the companies law (Ley General de Sociedades Mercantiles), the statements go into the Secretaría de Economía's electronic system, the PSM, only if shareholders request it. Some companies do have to publish: an SAS files a yearly report on its financial situation, and missing it two years running leads to dissolution, while a foreign company must publish an annual balance sheet endorsed by a qualified public accountant.

4. Mexican legal forms, briefly

The Ley General de Sociedades Mercantiles recognises seven types of commercial company, and for most of them it fixes the words the name must carry, so you can usually read the form straight off the suffix.

Every form except the cooperative can be set up as a sociedad de capital variable, which lets capital rise through new contributions or partners and fall through withdrawals with only the formalities set out in that chapter of the law, and must then add the words "de capital variable" to its name. That is where the familiar "de C.V." in names such as "S.A. de C.V." comes from.

The SAS, added to the law in 2016, deserves a note of its own. Its shareholders may not at the same time control another commercial company, and its total annual income may not exceed a cap that is updated every 1 January (MXN 7,678,849.94 for 2026, after the update published in December 2025). Above that, the company has to convert to another form, or its shareholders become liable without limit.

5. How to verify a Mexican company: a practical checklist

1. Confirm the company in SIGER

   Run a Consulta pública on the name or the folio mercantil electrónico and check that the denominación, the legal form suffix, and the domicile match what you were given. For a quick first pass, our free company lookup finds the registration and revenue data in one search.

2. Read the corporate acts in the folio

   Incorporation, transformation, merger, split, dissolution, and liquidation must all be registered, so they should all be in the folio. A dissolution or liquidation entry is the clearest warning sign you will find there.

3. Do not treat a missing director as a red flag

   Powers of attorney and officer appointments are registered only optionally. If the person signing is not in the folio, ask for the instrument that grants the power. Acts that go into the register must be formalised in a public instrument before a notary or corredor público, or in one of the other forms Article 25 of the Commercial Code lists, so that is the document to ask for. Check its date and scope against the deal in front of you.

4. Order a certificate when you need proof

   The operating rules list five kinds of certification: a certificate of liens and preventive annotations (libertad de gravámenes), of registration, of non-registration, of registry history, and certified copies of registry entries. You can request them at the registry office or online through SIGER, where a plain copy of the summary forms is also on offer, and each carries the state fee where one is charged. For security interests over movable assets, also search the RUG.

5. Check the PSM publications

   Search the company's name in the PSM advanced search by keyword and period. Look for capital reductions, merger and split resolutions, liquidation balances, the shareholder structure notice, and any published financial statements. For an SAS, check for its annual financial report and for a declaratoria de incumplimiento, the declaration the ministry issues when an SAS has not filed its financial situation for two consecutive years.

6. Go to the registry office for anything older

   Entries recorded in the books before SIGER that the offices have not yet captured, the acervo histórico, have to be consulted directly at the registry office. Registration follows the company's domicile, so if a company predates SIGER and its folio looks thin, the office of its domicile is where the rest of the file sits.

6. Limitations of the official register

To be fair: SIGER 2.0 fixed the worst problem, 271 separate counters, and the PSM is free. The limits show up as soon as you need access, documents, or numbers:

• No anonymous search. You need an account, and the operating rules require a full name, address, email, and CURP before you consult anything. They name no alternative to the CURP.
• A security check at every login. Each session starts with a CAPTCHA and acceptance of the terms of use, which makes even a single lookup a multi-step job.
• Prices differ by state. Consultation and certificate fees are set by each state, and the SIGER FAQ points to each state's rules instead of publishing a national tariff.
• No documents. The RPC keeps no copy of the deeds, only the summary forms. For the deed itself you need the notarial instrument.
• Directors are optional. Powers and officer appointments may be registered, but do not have to be.
• No financial statements. The RPC holds none, and under the companies law a sociedad anónima publishes its statements in the PSM only at its shareholders' request.
• Not every entry was reviewed. Acts that an authorised notary or corredor público sends electronically, with the fee paid online, are registered immediately and definitively, without review by a registrar.
• Gaps in the history. Pre-SIGER entries still in the books sit at the registry offices, and Mexico City's folios only began moving to SIGER 2.0 in August 2023.
• No bulk access. We found no public API or download for SIGER, and the terms of use forbid extracting all or part of the database to any medium.

If you check one Mexican supplier a year, a SIGER account is a one-off chore. If you onboard hundreds, the login, the CURP, and the state-by-state fees are the whole problem.

7. Access Registro Público de Comercio data programmatically

CompanyData maintains a normalized database of all 1,770,304 Mexican companies, enriched with revenue, employees, industry codes, and contact data that the Registro Público de Comercio does not publish at all.

Our Company Data API lets you look up any Mexican company by name or registration number and get structured JSON back in real time, with 150 free lookups to start and no SIGER account, CURP, or state fee required. It is used by developers, banks, and insurers across 190+ countries, so Mexican checks work exactly like checks anywhere else.

GET /v1/companies?country=MX&name=America%20Movil

We show the request line only. SIGER would not show a record for America Movil without an account, so this guide holds no register record to copy values from, and an example filled with values we could not check against the register would defeat the point. Run the request with your free lookups to see the full record.

8. Mexico vs other company registers

Mexico digitised its register into one national database but kept it behind a login, and publishes almost no financial data. For context: