# How many days make you tax resident in Mexico? > How Mexico decides tax residency: the residence tests, the tax year (1 January – 31 December), the tests that catch you regardless of days, and Servicio de Administración Tributaria (SAT)'s own page — checked 2026-08-18. Source: https://doastretch.com/tax-days/mexico/ Mexico · tax residency · 2026 Mexico does not decide it on one number; the tests that do are below, with the official page. Next step **How we know** Figures are as Servicio de Administración Tributaria (SAT) publishes them at sat.gob.mx, checked 18 August 2026. Sources are listed further down the page. ## How the counting works This is one of the few countries in this dataset with NO 183-day rule — a nomad can spend most of the year in Mexico without becoming resident, provided they keep no home there and their centre of vital interests stays abroad. The SAT trámite page we read names 'Código Fiscal de la Federación, artículo 9' and 'Resolución Miscelánea Fiscal, reglas 2.1.3. y 2.1.36' as the legal basis for the residency certificate but does not restate the criteria; the article 9 wording quoted above was read from the Código Fiscal de la Federación PDF hosted on sat.gob.mx, whose header shows 'Última Reforma DOF 07-12-2009'. The residency criteria in article 9 have not changed in substance since, but readers should check the current consolidated text. Article 11 CFF confirms fiscal years coincide with the calendar year. www.sat.gob.mx returned HTTP 403 to our fetcher; the mirror host wwwmat.sat.gob.mx served the same pages. That residents are taxed on worldwide income follows from the Ley del Impuesto sobre la Renta rather than the CFF, and was corroborated from secondary sources rather than a page we read. ## Why the day count is the part you can control Ties, homes and intentions are argued after the fact; days are a record. That is why the first thing an adviser asks for is a list of the days you were in the country — and why reconstructing it from boarding passes and photos a year later is a bad afternoon. Log each stay as it happens and the tally is simply there, with the dates that produced it. If you are moving to Mexico to work remotely, the [Mexico digital nomad visa page](https://doastretch.com/nomad-visa/mexico/) covers the permission side. ## Sources - [sat.gob.mx](https://www.sat.gob.mx/tramites/25450/solicita-tu-constancia-de-residencia-para-efectos-fiscales) — official source, checked 2026-08-18 - [wwwmat.sat.gob.mx](https://wwwmat.sat.gob.mx/tramites/25450/solicita-tu-constancia-de-residencia-para-efectos-fiscales) (official), retrieved 2026-08-18 - [wwwmat.sat.gob.mx](https://wwwmat.sat.gob.mx/cs/Satellite?blobcol=urldata&blobkey=id&blobtable=MungoBlobs&blobwhere=1461172468824&ssbinary=true) (official), retrieved 2026-08-18 - [taxsummaries.pwc.com](https://taxsummaries.pwc.com/mexico/individual/residence) (secondary), retrieved 2026-08-18 ## Questions people ask about Mexico tax residency **How many days can you spend in Mexico before becoming tax resident?** Mexico does not decide residency on a single day count. The centre of vital interests is in Mexico when, among other cases: more than 50% of the individual's total income in the calendar year has its source of wealth in Mexico; or the individual has the principal centre of their professional activities in the country. Mexican nationals who are State officials or employees remain resident even if their centre of vital interests is abroad. Salvo prueba en contrario (unless proven otherwise), individuals of Mexican nationality are presumed to be resident in Mexican territory. Anti-avoidance: Mexican nationals who prove new tax residence in a country or territory with a preferential tax regime do not lose Mexican residency for the fiscal year of the notice and the three following fiscal years, unless the new country has a broad tax information exchange agreement with Mexico. Anyone ceasing to be resident must file a notice with the tax authorities no later than 15 days before the change of tax residence. Count your days anyway — they are evidence, and other countries' tests use them. **When is Mexico's tax year?** 1 January – 31 December. Day counts are measured against that year unless the rule names a different period — here, Mexico has no day-count residency test. Under Código Fiscal de la Federación article 9, individuals are resident if they have established their casa habitación (home) in Mexico. Where they also have a home in another country, they are resident in Mexico only if their centro de intereses vitales (centre of vital interests) is in Mexican territory.. **Are residents of Mexico taxed on worldwide income?** Yes — once you are tax resident in Mexico, worldwide income falls in scope, subject to double-tax treaties. No remote-worker tax regime identified from official sources. **Is there a special tax regime for people moving to Mexico?** No remote-worker tax regime identified from official sources. Conditions and time limits apply; the official page below is the place to check them. **How does Stretch count tax days for Mexico?** Every stay you log feeds the tally: Stretch counts the days you were present against the country's test in the right window, so "how long was I actually there?" is answered before your accountant asks. Tax-day tallies are part of Stretch+; the day counter and the alerts are free forever. Tax days elsewhere - [United States](https://doastretch.com/tax-days/united-states/) 183d - [Canada](https://doastretch.com/tax-days/canada/) 183d - [Brazil](https://doastretch.com/tax-days/brazil/) 183d - [Costa Rica](https://doastretch.com/tax-days/costa-rica/) 183d - [Panama](https://doastretch.com/tax-days/panama/) 183d - [Guatemala](https://doastretch.com/tax-days/guatemala/) 183d - [Dominican Republic](https://doastretch.com/tax-days/dominican-republic/) 182d - [Colombia](https://doastretch.com/tax-days/colombia/) 183d - [All countries →](https://doastretch.com/tax-days/) Mexico, the rest of it - [Mexico's digital nomad visa](https://doastretch.com/nomad-visa/mexico/) - [Who needs a visa for Mexico](https://doastretch.com/visa/to/mexico/) - [All visa rules by passport →](https://doastretch.com/visa/) Stretch is a tracker, not legal advice, and this is not tax advice. Visa and tax rules change and are applied by the authority, not by an app — every figure here shows its source and the date we checked it. Checked 2026-08-18; confirm on the official page before you apply or file.