Mexico tax residency rules
Threshold: 183 days · Day Count · Calendar year (Jan 1 – Dec 31)
Mexico's residency framework uses casa habitación (home) and centro de intereses vitales (center of vital interests) rather than primarily day counts. The 50% income test triggers residency when more than half your income is Mexican-source. Treaty 183-day rule applies for employment income.
- Casa habitación: a maintained home in Mexico, broader than 'principal residence'.
- Center of vital interests: triggered by 50%+ Mexican-source income or principal professional activity in Mexico.
- Digital nomads renting Mexican apartments for 6+ months risk accidental residency.
Rules tracked by Tax Days
183-Day Rule
- Type
- Day Count
- Threshold
- 183 days
- Period
- Calendar year (Jan 1 – Dec 31)
Tax residency triggers if you're physically present for more than the threshold number of days in a calendar year.
Mexico tax residency, FAQ
How many days can I spend in Mexico before becoming a tax resident?
Generally, spending more than 183 days in Mexico during a calendar year can make you a tax resident.
How does Mexico count a day of presence?
Day-counting rules vary: many jurisdictions treat any part of a calendar day spent in-country as a full day, while others require presence at midnight. Because the burden of proof is usually on you, keep a contemporaneous, day-by-day record of where you were.
What tax year does Mexico use?
Mexico measures residency over calendar year (jan 1 – dec 31).
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