How to Get Dual Citizenship With Mexico: Paths, Costs, and Taxes

You can hold dual citizenship with Mexico, and the route you take depends on your family and where you were born. Mexico has allowed dual nationality since 1998, so becoming Mexican does not require giving up another passport.¹ From the U.S. side, American law does not force a choice either, and naturalizing in Mexico will not put your U.S. citizenship at risk.² Three pathways exist: birth on Mexican soil, descent from a Mexican parent, or naturalization after years of legal residency.

Which Path Applies to You

The first two paths are birthright claims. Anyone born on Mexican territory, or on a Mexican ship or aircraft, is Mexican regardless of the parents’ nationality.³ If you were born there but never obtained Mexican documents, you can request a certified birth certificate copy from the civil registry office that recorded your birth or through a Mexican consulate abroad.

If at least one of your parents was Mexican by birth, you are Mexican by birth too, even if you were born somewhere else.³ The nationality is yours already; you just need to register it with Mexican authorities to get documents. There is no age limit, and the registration is free at Mexican consulates.⁴

Everyone else goes through naturalization at the Secretaría de Relaciones Exteriores (SRE). The default requirement is five consecutive years of legal residency in Mexico immediately before applying.⁵ The residency drops to two years if you fit one of these categories:

You are married to a Mexican national and have lived together in Mexico for at least two years before applying.
You have a child who is Mexican by birth.
You are a direct descendant of a Mexican by birth. Grandchildren may be exempt from proving any residency at all if they hold no other nationality at the time of application.
You are a citizen of a Latin American country, Spain, or Portugal.
The SRE recognizes you as having made distinguished contributions to Mexico in fields such as science, culture, sports, or business.

Every naturalization applicant must also demonstrate Spanish ability and knowledge of Mexican history and culture.⁵

Registering Through a Mexican Parent

This is the fastest path if you qualify. Book an appointment at the nearest Mexican consulate through the MiConsulado system online, by phone, or by WhatsApp.⁴ Slots are limited; new ones typically open on the 15th and 30th of each month.

Plan to bring the originals plus two letter-size photocopies of each:

Your long-form birth certificate showing both parents’ nationalities and birthplaces. If issued outside the U.S. or Mexico, it must be apostilled and translated into Spanish.
Your Mexican parent’s birth certificate, which establishes the link that gives you the right to Mexican nationality.
Valid photo identification for everyone present. The Mexican parent needs a Mexican government-issued ID such as a passport, matrícula consular, or INE voter credential. You can present a foreign passport or other photo ID.
A marriage certificate, if your parent’s name on the birth certificate differs from their current legal name.
A death certificate, if the Mexican parent is deceased.

For minors, both parents must appear in person with the child. Adults can go alone. The initial birth registration is free and the first Mexican birth certificate copy is issued at no charge.⁴ With that certificate, you can apply for a Mexican passport at a separate appointment.

Naturalization Step by Step

Naturalization applications go to the SRE, either at its offices in Mexico or through a consulate. Expect to spend months on the process.

Assemble Your Documents

You will typically need a valid passport from your country of origin, your Mexican residency card (temporary or permanent), proof of your Mexican address, a criminal background record (Carta de No Antecedentes Penales), and, if requested, proof of financial solvency.

Every foreign document must be apostilled by the competent authority in the issuing country. In the United States, federal documents go through the State Department and state-issued documents like birth certificates go through the secretary of state’s office in the issuing state. Government apostille fees generally run $10 to $50.⁶ Anything not already in Spanish needs certified translation by a translator authorized by the judiciary of a Mexican state, typically $20 to $60 per page.

File and Pay the Fee

Book through the SRE’s online scheduling system. Staff will review your file at the appointment and flag anything missing. The SRE publishes its fee schedule each January 1, so check the current year’s amount before you go.

Take the Exams

You will be tested on Spanish reading and comprehension and on Mexican history and culture. Format and scoring have changed over the years, so ask the office handling your case what the current structure looks like when you file.

Wait for the Decision

After submission and exams, immigration and law enforcement authorities vet your background. The process usually takes roughly six to twelve months, longer if additional documentation is requested.

Take the Oath

If approved, you attend a ceremony and take an oath. Mexico’s Nationality Law requires you to formally renounce the protection of any foreign state and declare adherence to Mexican laws and authorities.⁷ The wording rattles some Americans, but the U.S. government does not treat a routine renunciation oath during foreign naturalization as evidence of intent to give up U.S. citizenship.⁸ After the oath you receive your Carta de Naturalización, and with it you can apply for a Mexican passport and an INE voter credential.

What Happens to Your U.S. Citizenship

Getting Mexican nationality does not cost you your U.S. citizenship. U.S. law does not mention dual nationality, does not require you to choose, and does not require permission from any U.S. court or agency before you naturalize elsewhere.² The only way foreign naturalization strips U.S. citizenship is if you explicitly tell the U.S. government that giving it up is your intent. Applying for and receiving Mexican nationality on its own does not do that.⁸

Both countries will expect you to use the right passport at the right border. Enter Mexico on your Mexican passport and the United States on your U.S. one.

Property, Rights, and Positions Closed to Dual Nationals

The clearest practical payoff of Mexican nationality is real estate. Foreigners cannot directly own residential property within 50 kilometers of the coast or 100 kilometers of an international border. That restricted zone covers most of Mexico’s desirable beach towns and border cities. Foreign buyers there work through a bank trust called a fideicomiso that holds title for up to 50 years with the foreigner as beneficiary.⁹ As a Mexican national you buy coastal or border property outright in your own name, and if you already hold property through a fideicomiso you can dissolve the trust and take direct title, ending the ongoing bank fees.

Some doors stay closed to dual nationals. Mexico’s Constitution reserves certain offices for Mexican-born nationals who hold no other nationality, including president, senator, federal congressperson, state governor, and Supreme Court justice. Running for one of these requires renouncing your other citizenship first. Dual nationals also face restrictions on serving in the Mexican military and working aboard Mexican-flagged ships or aircraft. For most people pursuing nationality for family, lifestyle, or investment reasons, none of this bites.

Tax Filings You Cannot Skip

Dual nationality creates reporting duties on both sides of the border. Mexico taxes residents on worldwide income, and Mexican nationals are presumed to be tax residents unless they can prove residence elsewhere.¹⁰ The United States taxes citizens on worldwide income regardless of where they live. If you live in Mexico as a U.S. citizen, you will file returns in both countries.

The U.S.-Mexico income tax treaty prevents most double taxation by letting you credit taxes paid in one country against what you owe in the other.¹¹ You usually will not pay the same dollar twice, but you still have to file in both places and claim the credits correctly. If you live in the U.S. and hold Mexican nationality, your U.S. tax picture does not change, though Mexican-source income such as rental income from Mexican property may trigger Mexican filings.

Two U.S. reporting rules catch people off guard when they open Mexican bank accounts. If your foreign financial accounts exceed $10,000 in combined value at any point in the year, you file an FBAR with FinCEN by April 15 of the following year.¹² Under FATCA, if your foreign financial assets exceed $50,000 at year-end (or $200,000 if you live abroad), you report them on Form 8938 with your tax return.¹³ Penalties for missing either filing are steep. Put both on your calendar.

What It Costs

Costs depend heavily on the path. Registering nationality by descent at a consulate is free, and the first Mexican birth certificate copy comes at no charge. Naturalization carries an SRE filing fee that the agency updates each January; check the current schedule before you apply.

Other expenses to plan for:

Apostilles, at $10 to $50 per document in government fees.
Certified Spanish translations, at $20 to $60 per page for legal documents.
A criminal background check, priced according to whether it is a state or federal record and which country issues it.
Travel to the consulate or SRE office, sometimes more than once for naturalization.
The Mexican passport application, which is its own fee after your nationality is confirmed.

Someone registering by descent might spend under $100 on copies and travel. A naturalization applicant can easily spend several hundred dollars on documents, translations, and fees before even reaching the passport stage.

1
Secretaría de Relaciones Exteriores. Double Nationality
2
U.S. Department of State. Dual Nationality
3
ECNL. Constitution of Mexico
4
Consulado General de México en Boston. Obtaining Mexican Nationality by Birth
5
Justia Mexico. Ley de Nacionalidad
6
Consulado de México en Reino Unido. Apostille
7
Library of Congress. Mexico Naturalization Law
8
U.S. Embassy & Consulates in Mexico. Dual Nationality
9
Consulado de México en Reino Unido. Acquisition of Properties in Mexico
10
Servicio de Administración Tributaria. How Foreign Who Resides in Mexico Should Be Taxed
11
Internal Revenue Service. United States – Mexico Income Tax Convention
12
Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR)
13
Internal Revenue Service. Summary of FATCA Reporting for U.S. Taxpayers