The documents depend on who will do the work and where. For a Mexican independent-service provider, start with the provider’s RFC details and an applicable CFDI (Mexico’s digital tax invoice), plus a written services agreement and ordinary payment and delivery records. Immigration documents apply when a foreign national will perform paid work in Mexico; company-establishment documents apply only if the foreign business plans to establish a Mexican entity or representative office. These are separate questions, not one universal contractor checklist.
Start by identifying which situation applies
Before collecting paperwork, establish the provider’s nationality, where the work will physically take place, whether the provider invoices as an individual or a company, and whether your business is buying services from abroad or setting up operations in Mexico. The right documents differ by path:
| Situation | Main purpose | Documents or steps to consider |
|---|---|---|
| Mexican provider serving a foreign customer | Tax invoicing and commercial records | Provider’s legal name and RFC details, applicable CFDI, services agreement, and payment and delivery records |
| Foreign national doing paid work while in Mexico | Immigration authorization | Documents depend on current immigration status and whether the person applies from within Mexico or through a job-offer visa route |
| Foreign business establishing a Mexican entity or representative office | Corporate establishment | Formation documents, power of attorney, written submission, and payment evidence under the Ministry of Economy procedure |
These paths can overlap, but one does not automatically trigger the others. In particular, paying a Mexican service provider does not, by itself, establish that a foreign customer needs an immigration employer-registration certificate or a Mexican entity.
Documents for a Mexican provider invoicing a foreign business
Services agreement
Use a signed agreement that identifies the parties and describes services, deliverables, fees, timing, payment terms, confidentiality and intellectual-property terms, and termination. This is prudent commercial documentation, not a particular contract form that the cited SAT guidance establishes as a universal prerequisite to hiring.
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RFC details and the CFDI
Collect the provider’s legal name and the RFC information needed for tax records and the invoice process. SAT explains that a provider who is required to invoice must issue a digital invoice, or CFDI, and describes ways to generate it, including the files obtained: SAT: Generate invoices for your activity as an individual.
If the provider is not yet registered, SAT describes an acquirer-assisted route for RFC registration. That process calls for the provider’s name, CURP or a copy of the birth certificate, principal activity, fiscal address, and signed express consent: SAT: RFC registration through a buyer or service acquirer. Confirm the current procedure and whether it fits the provider’s circumstances.
Keep the CFDI’s XML file as well as its printable representation. SAT identifies the digital invoice as valid fiscal proof for invoices that must be issued. A foreign customer’s treatment in the CFDI can involve specific recipient rules; verify the current SAT requirements and the fields to use with a Mexican tax professional rather than assuming the customer details are identical to those for a domestic recipient. The SAT’s 2024 tax-miscellany compilation includes foreign-recipient material, but the applicable current-year rule should be checked: SAT: Resolution Miscellany for 2024 compilation.
Payment and delivery records
Retain payment evidence and records showing delivery and acceptance of the contracted work as part of an ordinary business audit trail. The SAT materials cited above do not establish these as universal contractor-onboarding documents; they are sensible records to keep alongside the agreement and invoice.
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Do not make a tax-status certificate a blanket invoice condition
SAT invoice guidance cautions against conditioning CFDI issuance on the provider presenting a taxpayer identity card or Constancia de Situación Fiscal. You still need to provide the recipient information required by the applicable CFDI rules, but requesting that certificate as an automatic prerequisite to receiving an invoice is not the same thing as following those rules.
When the contractor is a foreign national working in Mexico
If a foreign national will perform paid work while physically in Mexico, check the person’s immigration condition and work authorization before work begins. The applicable process turns on the person’s current status and whether they are already in Mexico or are seeking entry based on a Mexican job offer.
Resident applying for permission to work
INM’s work-permit FAQ lists a current temporary-resident or student-resident card, applicable fee payment, and an offer describing the activity, duration, work location, and employer-registration details for the resident application route. For independent activities, it calls for a truthful written statement of occupation and location and, where applicable, proof of RFC registration. Check the current INM instructions for the applicant’s specific status: INM: Frequently asked questions about obtaining a work permit.
Visa based on a job offer
For the job-offer visa process, INM lists an application form, valid identification for the offeror or legal representative, an employment offer on letterhead, current employer registration, and a copy of the worker’s valid passport or travel document. Current procedure text asks the offer to specify the occupation, duration, work location or locations, work modality (in person, remote, or hybrid), and remuneration amount and frequency. Procedure details can change, so consult the live INM page and form: INM: Visa by job offer.
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Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →INM frames employer registration around hiring foreign personnel or issuing a job offer to a foreign national. It is not a generic certificate required of every foreign business that buys services from a Mexican contractor. Do not treat the employment-offer route as a universal contractor onboarding checklist.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.If the foreign business will establish in Mexico
A foreign company that intends to establish a Mexican legal entity or representative office has a separate corporate procedure. The Ministry of Economy lists formation documents, a power of attorney, a written submission, and payment evidence for foreign legal entities seeking to establish in Mexico. Foreign-origin documents should be legalized or apostilled where applicable, and documents in another language should have a qualified Spanish translation. See the current procedure: Secretaría de Economía: Authorization for foreign legal entities to establish in Mexico.
This procedure concerns establishment; it does not say that every foreign business purchasing services from a Mexican provider must form a Mexican entity.
Quick Recap
What to confirm before onboarding
- Where the individual will physically perform the services.
- The individual’s nationality and, if relevant, current Mexican immigration status.
- Whether the provider invoices personally or through a company.
- Whether your business is only purchasing services from abroad or plans to establish a Mexican operation.
- The services’ nature and duration, and whether the industry or a regulated profession requires separate permissions.
- Whether the arrangement raises worker-classification questions. Calling someone a contractor does not settle their legal status; classification requires a separate labor-law analysis.
- Whether the facts may create Mexican tax presence, permanent-establishment, or other local registration obligations. The procedures cited here do not resolve those questions, which need fact-specific professional review.
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