How to Apply for Mexican Dual Citizenship: Documents, Costs, and Filing

To apply for Mexican dual citizenship, you register your Mexican nationality at the Mexican consulate that covers your area of residence, or at a Secretariat of Foreign Affairs (SRE) office if you’re in Mexico. The process proves a legal connection to Mexico through civil registry documents, an in-person appointment, and issuance of a Mexican birth certificate (Acta de Nacimiento) that enters you into the national registry. Mexico’s constitution states that nationality by birth can never be revoked, so you are documenting a status you already hold rather than applying for something new.1Constitute Project. Mexico 1917 (rev. 2015) Constitution – Article 37

Who Qualifies

Article 30 of the Mexican Constitution defines four groups of people who are Mexican by birth:2Constitute Project. Mexico 1917 (rev. 2015) Constitution – Article 30

  • Anyone born on Mexican territory, regardless of the parents’ nationality.
  • Anyone born abroad with at least one Mexican parent.
  • Children born abroad to parents who naturalized as Mexican before the child’s birth.
  • Anyone born on a Mexican merchant ship, warship, or aircraft.

A 2021 constitutional amendment removed the earlier requirement that a Mexican parent must have been born on Mexican soil to pass nationality to a child born abroad. Under the previous rule, descent generally stopped at the first generation born outside Mexico. Grandchildren and great-grandchildren of Mexican nationals can now claim nationality by birth, provided they can document the family chain with civil registry records at every link.

Documents You Need

The registration is a paperwork exercise. Every document has to prove an unbroken legal chain from you to your Mexican parent, grandparent, or great-grandparent. Assembling the file correctly before your appointment is where the real work happens.

Your Documents

  • A long-form birth certificate, certified by the vital records office of the state or country where you were born, showing both parents’ names and places of birth. Short-form or commemorative certificates are not accepted.3Consulado General de Mexico en Boston. Obtaining Mexican Nationality by Birth
  • An apostille on that birth certificate from the Secretary of State in the U.S. state that issued it. Apostille fees generally run from $10 to $26 depending on the state.
  • A certified Spanish translation if your birth certificate is in English. Some consulates accept any certified translator; others require a court-authorized translator. Expect roughly $25 to $40 per page.
  • A valid government-issued photo ID, such as a U.S. passport or state driver’s license.

Your Mexican Parent’s (or Grandparent’s) Documents

  • A certified copy of the Mexican birth certificate (Acta de Nacimiento) from Mexico’s Civil Registry. Current certified copies can be ordered online through the Civil Registry portal or at any Mexican consulate.3Consulado General de Mexico en Boston. Obtaining Mexican Nationality by Birth
  • A marriage certificate, if the mother’s name on your birth certificate differs from her maiden name on her own Mexican birth certificate.
  • A certified death certificate, if the Mexican relative you’re claiming through has passed away.

The Application Form

The Solicitud de Nacionalidad Mexicana is the official form. You can download it from the SRE website or pick one up at the consulate. Fill it out in black ink, and check that every name, date, and place matches your supporting documents exactly. Mexican civil law records a full legal name with both a paternal and a maternal surname, and the form will ask for both. Minor spelling inconsistencies between the form and your certificates can trigger a rejection.

Where and How to File

Applicants living outside Mexico file at the Mexican consulate with jurisdiction over their area of residence. Mexico operates more than 50 consulates across the United States, each covering a defined geographic zone.4Consulado de Carrera de Mexico en Detroit. Double Nationality Mexican Americans Applicants in Mexico handle the process through an SRE office in any major city.

Appointments are booked through the MiConsulado scheduling system. You create an account on the portal, select your local consulate, and choose an available date and time.3Consulado General de Mexico en Boston. Obtaining Mexican Nationality by Birth Walk-ins are not accepted for nationality registrations. Consulates in cities with large Mexican-origin populations, including Los Angeles, Chicago, and Houston, often book weeks or months out, so check the portal early and be flexible.

What Happens at the Appointment

A consular officer reviews your original documents, verifies the apostilles, and confirms that the Spanish translations track the originals. Some consulates require you to bring two witnesses with valid photo ID who can confirm your identity; others provide witnesses on-site for a small fee. Call ahead to find out your consulate’s policy.

Once the file is approved, the officer prepares your Mexican Acta de Nacimiento. You sign it and provide fingerprints, which enter the national civil registry. That is the moment you are officially registered as a Mexican national. The record is permanent, and does not expire or need to be renewed.

After registration, you are assigned a Clave Única de Registro de Población (CURP), a unique population registry code that acts as your Mexican identification number. You’ll need the CURP for most interactions with Mexican institutions, from getting a tax ID to opening a bank account to accessing government health services.

What It Costs

The registration itself is free. The costs come from the surrounding paperwork:

  • Apostille: $10 to $26 depending on your U.S. state.
  • Certified Spanish translation: roughly $25 to $40 per page.
  • Additional certified copies of your new Mexican birth certificate: about $20 each at U.S. consulates. The first copy is typically free at the time of registration.3Consulado General de Mexico en Boston. Obtaining Mexican Nationality by Birth

Order at least two or three certified copies of the Acta de Nacimiento while you’re at the appointment. You’ll need them for follow-up steps like applying for a Mexican passport, and going back to the consulate later means booking another appointment.

Effect on Your U.S. Citizenship

Registering your Mexican nationality does not put your U.S. citizenship at risk. The U.S. State Department states plainly that “a U.S. citizen may naturalize in a foreign state without any risk to their U.S. citizenship.”5U.S. Department of State. Dual Nationality The only scenario in which acquiring a foreign nationality can cost you U.S. citizenship is if you take that step with the specific, affirmative intent to relinquish your American one. Registering Mexican nationality does not, on its own, create that intent.6U.S. Embassy and Consulates in Mexico. Dual Nationality

Travel Rules Once You’re Registered

Article 12 of the Nationality Law requires dual nationals to identify themselves as Mexican, without exception, when entering and leaving Mexico.7Secretaria de Relaciones Exteriores. Double Nationality In practice, that means carrying a Mexican passport for trips to Mexico. You show the Mexican passport at the gate leaving Mexico, and your U.S. passport to U.S. customs on arrival back home.

That makes applying for a Mexican passport a natural next step after registration. As of January 2026, passport fees are 1,795 MXN for three years, 2,440 MXN for six years, and 4,280 MXN for ten years. Adults over 60 and people with disabilities qualify for a 50% discount.8ARQ. How Much Does the Mexican Passport Cost in 2026? You apply at the same consulate where you registered, using your new Acta de Nacimiento and CURP.

Restrictions on Dual Nationals

Article 32 of the Constitution reserves certain positions for people who hold only Mexican nationality by birth. Dual nationals are excluded from those roles unless they formally renounce their other nationality.9Constitute Project. Mexico 1917 (rev. 2015) Constitution – Article 32 Dual nationals are also barred from serving in Mexico’s military, navy, or air force during peacetime, and from holding positions such as ship captain, airline pilot on Mexican-flagged aircraft, or port harbormaster.

For most people registering from the United States, these limits don’t come up. Holding property, working in the private sector, running a business, and using government services are unaffected.

A Note on Taxes

Registering Mexican nationality does not by itself create Mexican tax obligations. Mexico taxes based on residency, not nationality. If you live in the U.S. full-time, Mexico has no claim on your income. Mexican tax obligations arise only if you spend more than 183 days per year in Mexico or earn income from Mexican sources.