Does Mexico allow dual citizenship?

Yes. Mexico has permitted dual nationality since a constitutional change took effect in 1998. A person can hold Mexican nationality alongside US (or other) citizenship. Mexican-born citizens cannot lose their nationality by acquiring another, and the United States likewise permits its citizens to hold a second nationality — so US–Mexican dual citizenship is fully recognised by both countries.

How can a US citizen get Mexican citizenship?

The main routes are by descent (claiming Mexican nationality through a Mexican-born parent, and in some cases grandparent), and by naturalisation after holding legal residency. The standard naturalisation route requires five years of legal residency in Mexico, reduced to two years if you are married to a Mexican citizen, have Mexican children, or are a national of a Latin American or Iberian country. Naturalisation also requires a basic Spanish ability and a Mexican history and culture exam.

What are the benefits of Mexican citizenship?

Mexican citizens can live and work in Mexico without immigration status, vote, hold a Mexican passport, and — importantly for many — buy property in the formerly 'restricted zone' near the coast and borders in their own name, without the bank trust (fideicomiso) that foreigners use. Citizenship also removes the need to maintain and renew residency permits.

Do US–Mexican dual citizens pay tax in both countries?

Potentially, but a tax treaty and foreign tax credits usually prevent true double taxation. The US taxes its citizens on worldwide income regardless of dual status. Mexico taxes its tax residents on worldwide income — but tax residency is based on where your home and centre of vital interests are, not merely on citizenship. A US citizen who becomes a Mexican citizen but remains a US resident is not automatically a Mexican tax resident; living in Mexico is what creates Mexican tax residency.

How long does Mexican naturalisation take?

After meeting the residency requirement (typically five years, or two in the reduced-time categories), the naturalisation application itself is filed with the Secretaría de Relaciones Exteriores (SRE) and generally takes several months to process, including the Spanish and history/culture exams and an interview. The longest part is almost always accumulating the qualifying residency first — you must move through temporary and then permanent residency before you can naturalise.

Can children of Mexican citizens claim dual citizenship?

Yes. A child born abroad to at least one Mexican-born parent is generally entitled to Mexican nationality by descent, claimed by registering the birth with a Mexican consulate or in Mexico. Transmission beyond the first generation born abroad has limits, so families intending to pass on Mexican nationality should register children early rather than assume it passes indefinitely.

Mexican Dual Citizenship: Routes, Rules & Tax (2026 Guide)

Mexico is one of the most accessible second citizenships for North Americans, and "Mexican dual citizenship" draws steady search interest from US citizens who already spend time there, own property, or have Mexican family. The good news: both Mexico and the United States permit dual nationality, so you do not have to choose. This guide covers the realistic routes — descent and naturalisation — the property advantage that motivates many applicants, and the tax reality that a second passport does not change your US obligations. Written primarily for US citizens.

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Both countries say yes

Mexico has allowed dual nationality since 1998, when a constitutional reform took effect specifically so that Mexicans abroad — and their children — would not have to renounce Mexican nationality to naturalise elsewhere. Mexican-born citizens cannot be stripped of their nationality for acquiring another.

On the US side, as covered in our guide to dual citizenship in the United States, the US permits its citizens to hold a second nationality. So US–Mexican dual citizenship is recognised by both governments, and millions of people hold it.

Both Mexico and the United States permit dual nationality — Mexico (since 1998) and the US both **permit** dual nationality.

The routes to Mexican citizenship

By descent. If you have a Mexican-born parent — and in some cases a grandparent — you may claim Mexican nationality by registering your birth with a Mexican consulate. This is the fastest route for those eligible, because it does not require living in Mexico.

By naturalisation. For everyone else, the path runs through residency:

Obtain Mexican temporary residency (see our Mexico temporary resident visa guide), then permanent residency.
Accumulate five years of legal residency — reduced to two years if you are married to a Mexican citizen, have Mexican children, or are a national of a Latin American or Iberian country.
Apply to the Secretaría de Relaciones Exteriores (SRE), pass a basic Spanish assessment and a Mexican history and culture exam, and attend an interview.

The exams are not trivial but are manageable with preparation. The long pole is always the residency you must hold first.

Naturalisation path: temporary residency, permanent residency, five years, exams — Naturalisation runs through **residency** — usually five years (two in reduced categories).

Why people want it: property and permanence

The single biggest practical motivator is property. Foreigners buying a home within roughly 50 km of the coast or 100 km of a border — the "restricted zone" that covers most desirable beach areas — must hold it through a bank trust (fideicomiso) or a Mexican corporation. A Mexican citizen buys in their own name, with no trust and no annual trust fee.

Beyond property, citizenship removes the residency-renewal treadmill, grants the vote, and provides a Mexican passport. For US citizens already living in Mexico on residency, naturalisation is the natural endpoint.

The tax reality

A Mexican passport does not change your US tax position. The US taxes citizens on worldwide income for life, so a US–Mexican dual citizen still files a US return and reports foreign accounts via FBAR and FATCA, using the Foreign Earned Income Exclusion or Foreign Tax Credit to avoid double tax.

On the Mexican side, tax is driven by residency, not citizenship. Mexico taxes its tax residents on worldwide income — but you become a Mexican tax resident by establishing your home and centre of vital interests there, not merely by holding the passport. A US citizen who naturalises but keeps their life in the US does not automatically become a Mexican taxpayer; someone who actually lives in Mexico does. The US–Mexico tax treaty and foreign tax credits generally prevent the same income being taxed twice.

US taxes by citizenship; Mexico taxes by residency, not by passport — US taxes by **citizenship**; Mexico taxes by **residency** — the passport alone does neither.

Living in Mexico as a US citizen?

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Common mistakes

Assuming citizenship changes US tax. It does not — only renunciation does, and that has its own exit-tax cost.

Confusing citizenship with tax residency in Mexico. Living there creates Mexican tax residency; the passport alone does not.

Expecting naturalisation to be quick. The exams are fast; accumulating the residency first is the multi-year part.

Not registering children early. Nationality by descent has generational and timing limits — register births promptly.

When to consult a qualified professional

Get advice if you will live in Mexico (Mexican tax residency planning), own or plan to buy Mexican property, or need your US filing handled while abroad. An immigration lawyer can manage the SRE naturalisation process and a cross-border accountant can keep both tax systems aligned.

Soveraine is an editorial publication, not a law or tax firm. Read our editorial policy and disclaimer before acting on anything in this article.