Mexico procures at the federal level through a single national platform, ComprasMX, which replaced CompraNet in 2024. Suppliers and contractors create a company account on ComprasMX (Registro de Empresas); the RUPC (Registro Unico de Proveedores y Contratistas) is the standing supplier registry maintained within it, which classifies suppliers by activity, general data, nationality, experience and contracting history. Both national and foreign companies may register and participate; foreign companies use a distinct registration path that accepts a foreign tax ID plus apostilled/legalized incorporation documents. RUPC registration is free and done online.
ComprasMX (Registro Unico de Proveedores y Contratistas - RUPC)
Secretaria Anticorrupcion y Buen Gobierno (formerly Secretaria de la Funcion Publica)
Foreign companies eligibleNo local entity required to bid
A local entity or Mexican office is NOT legally required to register or bid for most opportunities (trade.gov: 'For most opportunities, it is not required to have a local representative or an office in Mexico to bid on a tender and sell to the GOM'). However, a local presence and Spanish-language capability are strongly recommended in practice, and tenders frequently require some form of local presence for bid document handling and after-sales service. NOTE/DISCREPANCY: trade.gov states companies registering on ComprasMX 'must have a Mexican tax ID (RFC)'; the practitioner guide (latamcompra) describes a separate foreign-company registration path that accepts a tax ID from the country of origin plus apostilled documents. This point needs human verification against the live ComprasMX foreign-registration flow.
Check the RUPC search tool to confirm the company is not already registered. National companies must have a current SAT e.firma (.cer, .key, password). Foreign companies generate an e.firma using a downloadable application that creates a password, later combined with a .cer and .key file issued during the foreign registration process, used to electronically sign proposals.
Go to ComprasMX, select 'Licitantes, Proveedores, Contratistas' / 'Registra a tu empresa' (Register Bidders, Suppliers, and Contractors), accept the terms and conditions, and select the company type. National companies select the national option and upload SAT e.firma; foreign companies select the foreign-company option and complete company and administrator information.
Foreign companies upload documents proving nationality and legal existence. Incorporation instrument (testimonio de la escritura publica) must be apostilled or legalized and in Spanish (PDF). Await processing emails delivering access credentials and the .cer file to combine with the .key file and password for the e.firma.
After submitting the registration, the company receives a confirmation email. For national companies the practitioner guide reports confirmation within approximately 8 business days; foreign companies await processing emails with access credentials.
The RUPC is the standing supplier registry. Capture the required company data (partners, legal representatives, specialty, experience, technical/economic/financial capacity) in the ComprasMX account. RUPC inscription is typically requested in connection with a formalized contract with a federal agency/entity; the purchasing unit reports it and the SFP/Secretaria Anticorrupcion y Buen Gobierno verifies the registration. Registration is done only once; the company must keep its RUPC certificate updated. With an RUPC certificate, a supplier need not re-submit certified legal-existence documents to sign future contracts.
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Create free accountFree (no cost). RUPC/ComprasMX registration is free and done online.
Varies per tender — not a fixed registration time.
Ley de Adquisiciones, Arrendamientos y Servicios del Sector Publico (LAASSP). Art. 56 Bis mandates the single supplier registry (registro unico de proveedores) within the integral information system, classifying suppliers by activity, general data, nationality and contracting history/compliance. Administered per the LAASSP and its Reglamento (RLAASSP).
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This guide is grounded in official sources, last verified 2026-07-20.