Searching the Mexican business register is a necessary step when you're vetting a new supplier, checking a potential partner, or conducting corporate due diligence. Mexico doesn't run a single, flat registry office like some other countries do. Instead, corporate registration is handled through the Registro Público de Comercio (RPC) and its digital engine, the Sistema Integral de Gestión Registral (SIGER), alongside the commercial directory known as SIEM (Sistema de Información Empresarial Mexicano). Because state governments and federal bodies share these duties, knowing which portal to check saves hours of frustration.
If you want to verify a company's existence quickly, you'll use the Secretaría de Economía portal to access SIGER for legal acts, or check public directories for operational details. However, tracking down exact incorporation histories, tax numbers (RFC), and legal representatives requires understanding how these systems link together. Let's break down the exact process you need to follow.
Understanding Mexico's Two Main Business Systems
Before typing names into search bars, you need to know which register holds the data you're after. Mexico splits business tracking into legal registries and commercial directories. Mixing them up leads to dead ends.
The Public Commercial Register (RPC / SIGER)
The RPC is the legal bedrock of Mexican corporate life. Operated jointly by the federal Secretaría de Economía and individual state governments, it records formal acts: incorporations, amendments, bylaws, mergers, and powers of attorney.
Every registered company receives a folio mercantil (commercial folio number). When you search here, you're looking at legally binding documents. If a dispute arises or you need proof of who holds executive power, this is where you look.
The Business Information System (SIEM)
SIEM is a promotional and operational directory rather than a strict legal registry. Created to help businesses find each other, it gathers voluntary data from industrial, commercial, and service establishments through local chambers of commerce.
While enrollment is legally mandated, compliance varies. You'll find commercial names, physical addresses, contact emails, and declared export or import activities here. It's great for outreach, but bad for absolute legal verification.
Step-by-Step Guide to Searching SIGER for Legal Records
If you need to verify a company's legal standing, corporate history, and registered officers, follow these steps using the official federal network.
- Navigate to the official portal: Open the SIGER platform via the Ministry of Economy to access public commercial consultations.
- Select your search criteria: You can search by company name (denominación o razón social) or by the specific folio mercantil if you already have it.
- Filter by jurisdiction: Because commercial registries are decentralized by state, select the state where the company has its legal domicile (for example, Mexico City, Nuevo León, or Jalisco).
- Review the corporate entries: Look through the asiento registral (historic entries of commercial acts) to see when the company was founded, its initial capital structure, and any subsequent amendments.
- Identify legal representatives: Check the records for poderes notariales (notarized powers of attorney) to see who has the legal authority to sign contracts on behalf of the firm.
Finding Operational Data via SIEM
When your goal is finding phone numbers, physical locations, or checking if a business claims to be active in foreign trade, use the SIEM database.
- Search by name: Enter the commercial or legal name into the SIEM directory. The search supports partial matches.
- Filter by activity: Use SCIAN (North American Industry Classification System) codes to narrow down businesses sharing similar names.
- Review declared metrics: Open the individual establishment record to see headcount estimates, website URLs, and whether the business imports or exports goods.
Keep in mind that missing records in SIEM don't mean a company is illegal; many small firms skip updating their chamber registrations.
Crucial Due Diligence Beyond the Basic Registry
Checking the official registry is just the first layer. A thorough background check in Mexico requires crossing references with tax and financial authorities.
The Tax ID (RFC) and Fraud Lists
Every legitimate Mexican business possesses an RFC (Registro Federal de Contribuyentes). For corporate entities, it's a 12-character alphanumeric code.
You should verify this tax ID through the Tax Administration Service (SAT) portal to confirm the company's tax status is active (activo) rather than suspended or cancelled. Additionally, check the SAT Article 69-B blacklist to ensure the entity isn't flagged as an artificial invoice-generator (EFOS).
Common Mistakes to Avoid
- Confusing trade names with legal names: A restaurant might operate under a catchy brand name while its corporate entity is registered under an entirely different corporate title (S.A. de C.V.). Always find the legal name first.
- Ignoring state jurisdictions: Searching a national database without specifying the correct state folio can yield zero results if the company was incorporated locally.
- Trusting directory data blindly: Treat SIEM listings as self-reported marketing data, not certified legal truth.
Frequently Asked Questions
Is searching the Mexican business register free?
Basic public consultations on official federal and state portals are generally free of charge, though downloading certified copies of historical deeds or specific notarial acts through SIGER may require small administrative fees.
What is an S.A. de C.V. and why does it matter?
S.A. de C.V. stands for Sociedad Anónima de Capital Variable, which is the most common form of corporation in Mexico. Understanding the corporate structure (such as S. de R.L. for limited liability companies) helps you identify liability limits and ownership rules.
Why can't I find a company that I know exists?
The company might be registered under its exact legal name rather than its popular brand name, or its registration is filed in a different state. Alternatively, if you're searching SIEM, the company may simply not have updated its voluntary chamber registration.
How do I verify a company's financial health?
Public registries in Mexico don't routinely publish full balance sheets for private companies. For deep financial checks, you'll need to request audited statements directly from the counterparty or purchase a commercial credit report from specialized risk agencies.
