Work and Legal Basics

Centro · Experience date Jan 23, 2026

RFC (Registro Federal de Contribuyentes) registration for foreigners in Mexico City: Book an SAT appointment at sat.gob.mx/tramites/operacion/27068 — select 'Inscripción al RFC'. Bring: original passport, copy of passport, immigration document (FMM or residency card), and proof of Mexican address (utility bill, bank statement, or lease in your name). At the appointment: SAT officer assigns your RFC and provides your digital signature setup (e-firma) for electronic filings. Time: 30–60 minutes. Processing: RFC issued same day. After receiving RFC: download your Constancia de Situación Fiscal (tax status certificate) from sat.gob.mx — needed for bank account opening and formal contracts. Your RFC is 13 characters: first 4 letters from name/surname + 6 digits from birthdate + 3 homoclave.

Centro · Experience date Mar 29, 2026

Foreign residents can own and register vehicles in Mexico. Process: purchase vehicle from a dealer or private seller, register at the CDMX Secretaría de Finanzas with passport, residency document, and proof of address. Tenencia (annual vehicle ownership tax): paid annually, based on vehicle value and age. Car insurance (seguro de auto): mandatory — AXA, Qualitas, and HDI are major providers. Typical cost: $8,000–20,000 MXN/year for basic third-party + limited comprehensive. Importing a foreign vehicle: possible but complex — requires a permit and compliance with Mexican emissions standards. For most CDMX expats in central colonias: car ownership is unnecessary and counterproductive (see Hoy No Circula restrictions, parking scarcity, and traffic). Consider renting for weekend trips instead of owning.

Polanco · Experience date Nov 26, 2025

When to consult a Mexican lawyer (abogado): signing a lease without a standard agency, starting a business, property purchase, visa complications, employment contract review, divorce or family matters. Finding reliable legal help: expat Facebook groups ('Mexico City Expats') are the best referral source for English-speaking lawyers. Many CDMX lawyers advertise on these groups with expat experience. Cost: immigration lawyer $5,000–15,000 MXN for a residency application, employment lawyer $2,000–5,000 MXN for contract review. Notario vs abogado: a notario authenticates legal documents and structures transactions; an abogado represents your interests. You need both for property transactions. Warning: some English-advertising lawyers in tourist areas overcharge expats significantly — get multiple quotes and referrals.

Insurgentes · Experience date Nov 11, 2025

Mexico has extensive international agreements relevant to expats. Tax treaties: with the US, UK, Canada, Germany, Netherlands, Spain, and 30+ other countries — prevents double taxation of the same income. Social security agreements: bilateral agreements with Canada, Spain, and some others allow pension contributions to be counted across countries. Free trade agreements: CUSMA/USMCA (Mexico-US-Canada), CPTPP (Pacific Rim), EU-Mexico agreement (updated) — create specific work permit pathways for qualifying professionals. US expats in CDMX: NAFTA/USMCA creates specific visa pathways for certain professions (engineers, accountants, scientists) — ask an immigration lawyer about TN visa status if you're US or Canadian working in Mexico. UK expats post-Brexit: no longer have USMCA benefits — standard Residente Temporal applies.

Del Valle · Experience date Nov 28, 2025

IMSS Voluntario (Voluntary IMSS): foreigners residing in Mexico can voluntarily enrol in IMSS (Mexico's public social security healthcare) even without formal Mexican employment. Annual cost: approximately $3,800–5,500 MXN/year ($190–275 USD) — depends on age. Coverage: full IMSS healthcare network access including hospitals, specialists, prescription drugs, maternity, and emergency care. Quality: variable — some IMSS hospitals are excellent, others crowded with long waits. Enrolment: at your local IMSS office with passport, immigration document, and proof of address. Benefits over private insurance: significantly cheaper, covers pre-existing conditions after an initial waiting period. Many long-term CDMX expats use IMSS Voluntario as their primary health coverage and supplement with private hospital visits for non-emergency care.

Polanco · Experience date Jan 13, 2026

SAT (Servicio de Administración Tributaria) is Mexico's tax authority. If you become a Mexican tax resident (183+ days in Mexico or primary economic interests in Mexico): you are required to file annual tax returns. Register: obtain an RFC at sat.gob.mx or at a SAT office with passport and address. Tax obligations: file a Declaración Anual by April 30. For remote workers employed abroad: Mexico taxes worldwide income for residents. In practice: many digital nomads don't register with SAT — but this creates legal risk and makes banking and renting more difficult. Recommendation: register for RFC (takes 30 minutes, free) even if you're not sure about full tax residency — the RFC opens financial services without obligating you to complex tax filings immediately.

Centro · Experience date Dec 2, 2025

If you have a labour dispute with a Mexican employer: CGJT (Centro de Conciliación y Registro Laboral) handles conciliation (2019 labour reform created this pre-trial conciliation requirement). Process: file a conciliation claim before going to court — 45-day process. If unresolved: take to a Tribunal Laboral. PROFEDET (Procuraduría Federal de la Defensa del Trabajo): free legal assistance for workers. Key leverage: Mexican labour law is strongly pro-worker — employers often settle to avoid court. Document everything: keep copies of your contract, pay slips, WhatsApp communications with your employer. For expats who believe they've been wrongfully dismissed or underpaid: consult PROFEDET before paying a private lawyer.