Mexico Tax Residency Guide 2026

The 183-Day Presence Test

Under Article 9 of the LISR, an individual is a Mexican tax resident if they are physically present in Mexico for 183 days or more in a calendar year. The SAT also considers a broader period: 183 consecutive days within any 365-day period, which can trigger residency even if the 183 days span two calendar years. Days of presence include partial days. The burden of proof lies with the taxpayer to demonstrate days spent outside Mexico; travelers should maintain a travel log (bitácora de viajes) with entry/exit stamps, flight itineraries, and accommodation records.

Center of Vital Interests (Centro de Intereses Vitales)

Even if physical presence is below 183 days, an individual may be deemed a tax resident if Mexico is the center of their vital interests. This test has two components:

• Professional interests: Where the individual derives more than 50% of their professional income or performs their primary professional activities.
• Economic interests: Where the individual's primary assets, investments, bank accounts, and business operations are located.

If either test points to Mexico, the SAT may assert residency. Dual-residency situations are resolved through DTA tie-breaker rules, which prioritize the individual's permanent home, then center of vital interests, then habitual abode, then nationality.

Permanent vs Temporary Residence (Immigration)

Mexico's immigration law (Ley de Migración) distinguishes between temporary residence (residencia temporal) and permanent residence (residencia permanente). Temporary residence is granted for up to 4 years and may be renewed or converted to permanent residence. Permanent residence has no time limit. Immigration status does not automatically determine tax residency: a temporary resident who meets the 183-day test or center of vital interests test is considered a tax resident. However, temporary residents in their first year may elect to be taxed as non-residents. Permanent residents are almost always tax residents. Both temporary and permanent residents must register with the SAT to obtain their RFC.

Tax Certificate (Cédula Fiscal)

The cédula fiscal is the official tax certificate issued by the SAT that confirms a taxpayer's registration and tax status. It includes the taxpayer's RFC, name, tax address (domicilio fiscal), tax regime (régimen fiscal), and whether the taxpayer is up to date with filings. The cédula fiscal is available electronically through the SAT portal (portal de SAT) after logging into the Buzón Tributario. It is commonly required for:

• Opening bank accounts and investment accounts
• Real estate transactions (notary requirements)
• Applying for credit or loans
• Entering into contracts with Mexican companies
• Obtaining permits and licenses

To obtain a cédula fiscal, a taxpayer must first register for an RFC and be in compliance with all filing obligations.

Loss of Residency

An individual ceases to be a Mexican tax resident when they establish residence in another country and Mexico is no longer the center of their vital interests. A notice of change of residence must be filed with the SAT within 30 days of departure. Additionally, a low-tax jurisdiction exit tax may apply if the individual has been a resident for at least 5 of the last 10 years and moves to a country with a preferential tax regime (listed by the SAT). The exit tax applies to unrealized capital gains on shares and other assets.

FAQs

How do I prove the number of days I spend in Mexico?

The SAT accepts travel logs, passport entry/exit stamps, flight itineraries, credit card transaction records, and cell phone location data. Maintaining a detailed bitácora de viajes is strongly recommended.

If I have permanent residence but live abroad, am I still a tax resident?

Not necessarily. Tax residency depends on physical presence and center of vital interests, not immigration status. A permanent resident who lives abroad and has no home or business in Mexico is not a tax resident, but should file a change of address notice.

Can a foreigner with temporary residence avoid Mexican tax on foreign income?

Yes, during the first year of temporary residence, individuals may elect to be taxed solely on Mexican-source income by filing an election with the SAT. After the first year, worldwide income is taxable.

Disclaimer

This guide provides general information about Mexican tax residency rules for 2026. Tax laws, SAT criteria, and immigration regulations may change. The information is based on published sources and may not reflect individual circumstances. Always consult with a qualified Mexican tax advisor for advice specific to your situation. InvestmentKit does not provide tax advice.