Both tax a resident on worldwide income. Mexico's lowest cited income floor is $4,270 a month, against $1,051 in Portugal. Mexico naturalises after 5 years of residence, and Portugal naturalises after 10 years of residence.
Mexico sources verified 2026-07-12. Portugal sources verified 2026-07-12.
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| MexicoSources verified 2026-07-12 | PortugalSources verified 2026-07-12 |
|---|---|
| Personal income tax | |
| WorldwideLey del Impuesto sobre la Renta, Articulo 1 (Orden Juridico Nacional) | WorldwideCodigo do IRS, Artigo 15 (Autoridade Tributaria) |
| Lowest cited income floor, a month | |
$4,270 Economic self-sufficiencyLineamientos generales para la expedicion de visas (DOF 25/07/2025) | $1,051 Passive income (rentista)Meios de subsistencia, Vistos Nacionais (MNE) |
| Citizenship | |
Residence first5 yrs | Residence first10 yrs |
| Your current passport | |
| Kept on naturalisationDoble nacionalidad (SRE, gob.mx) | Kept on naturalisationLei 37/81 (Nationality Law), Artigo 8, consolidated (Diario da Republica) |
| EU access and English | |
| No EU accessEnglish not widespread | EU accessEnglish widely spoken |
* OmniFlag's own assessment, not a figure from a statute.
The full comparison, in words
Mexico and Portugal differ on the three things a mover weighs first: what each taxes, the cheapest cited way in, and how long citizenship takes. On tax, both tax a resident on worldwide income. On entry, Mexico's lowest cited income floor is $4,270 a month on its economic self-sufficiency route. Portugal's lowest cited income floor is $1,051 a month on its passive income (rentista) route. On citizenship, Mexico naturalises after 5 years of residence, and Portugal naturalises after 10 years of residence. The table below sets every cited figure side by side, and each dossier carries the full detail.
Common questions
Does Mexico or Portugal tax foreign income?
Mexico: Worldwide income, ISR on all income regardless of where it is earned. Non-residents are taxed on Mexican-source income only. Portugal: Worldwide income, including foreign pensions, with credit for foreign tax paid.
When do Mexico and Portugal treat you as tax resident?
Mexico: A home in Mexico, establishing a home here makes you a tax resident. Centre of vital interests, With a home in two countries, whether more than half your yearly income is Mexican-sourced. Portugal: Day count, more than 183 days, in any 12-month period. Permanent home, a home kept in conditions showing intent to live there, whatever the day count. A tax residency test runs separately from the permit that lets you live there, so holding one does not settle the other.
What is the cheapest cited way to live in Mexico or Portugal?
Mexico's lowest cited income floor is $4,270 a month on its economic self-sufficiency route. Portugal's lowest cited income floor is $1,051 a month on its passive income (rentista) route.
Which grants citizenship sooner, Mexico or Portugal?
Mexico naturalises after 5 years of residence. Portugal naturalises after 10 years of residence. Mexico lets you keep your current passport. Portugal lets you keep your current passport.
Read each dossier in full
North America
Mexico
Residence by economic solvency next door to the US, a defined path to a passport, and dual nationality kept.
- Permanent residence
- 4 years
Southern Europe
Portugal
Passive-income and remote-work residence, a defined path to a passport, and dual citizenship kept.
- Permanent residence
- 5 years
- IFICI rate
- 20%
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