What is the Mexican naturalization exam?
Its official name is the Examen de conocimientos sobre historia y cultura de México, the exam on knowledge of the history and culture of Mexico. The Secretaría de Relaciones Exteriores (SRE) gives it as part of the application for a carta de naturalización, the document that grants Mexican nationality to a foreign resident.
It is one step of the process, alongside your documents and a Spanish test. Neither test is a formality: both are scored, and both have a pass mark. The good news is that the format is short and predictable, so a few weeks of focused study go a long way.
What changed in 2026?
In June 2026 the SRE published an acuerdo in the Diario Oficial that merged the seven naturalization procedures into a single trámite, cut resolution of a carta de naturalización from 90 natural days to 40 business days, cut a declaratoria de nacionalidad from 40 to 20 business days, and removed photographs, escritos libres and the physical presentation of the CURP from several procedures.
The exams did not change. The format, the pass marks, the two attempts and the study syllabus are all as they were. What changed is the paperwork around them and how long you wait afterwards. Anything you read that still describes seven separate procedures with a 90-day resolution predates the reform.
How many questions are on the exam, and what score do you need?
- questions
- 10
- minutes
- 10
- correct to pass
- 8
- always in Spanish
- ES
You answer 10 questions in 10 minutes and need 8 correct answers to pass, which leaves room for two mistakes. The exam is always in Spanish, whatever your nationality or first language.
One minute per question is not much time to reason through something you have never seen. The goal of studying is recognition: reading a question in Spanish and knowing the answer before you reach the options.
What is the Spanish test for naturalization?
Every applicant also takes a Spanish test, including people who are exempt from the history exam. It has three parts: an interview, a reading, and a writing task.
- parts: interview, reading, writing
- 3
- points in total
- 6
- points to pass
- 5
- minutes
- 10
If you already handle daily life in Mexico in Spanish, you have been preparing for this part for years. The history exam is where most of your study time should go.
Who doesn’t have to take the history exam?
Article 15 of the Reglamento de la Ley de Nacionalidad names three groups, for whom it is enough to show they speak Spanish:
- People aged over sixty
- Minors
- Foreign nationals the Secretaría de Gobernación considers refugees
They still take the Spanish test — that is precisely what "enough to show they speak Spanish" means. Marriage to a Mexican national, having Mexican-born children, or being of Latin American or Iberian origin shortens the residency you need, but exempts you from nothing. Who is exempt, in detail
How many years of residency do you need?
Since June 2026 there is one naturalization trámite, but Article 20 of the Ley de Nacionalidad still sets a different residency period for each situation:
- Residency: 5 years
- Marriage to a Mexican national: 2 years, living together in a marital home in Mexico
- Mexican children by birth: 2 years
- Latin American or Iberian origin: 2 years
- Direct-line descendant of a Mexican by birth: 2 years
- Outstanding services or works benefiting Mexico: 2 years, at SRE’s judgement
- Adopted, or a minor in a Mexican’s care: 1 year
The exams are the same in every case, and so is the fee. What changes is the document that proves the tie. The requirements overview walks through each one.
Is the Mexican naturalization exam hard?
It is short, but it isn’t easy to pass without preparing. Three things make it harder than it looks. First, the pass mark: 8 of 10 means you can miss only two questions. Second, the clock: one minute per question leaves little time to work something out. Third, the language: every question is in Spanish, and history vocabulary is not the Spanish you use at the market or the bank.
On the other hand, the scope is fixed and the format doesn’t change. People who study the material in a structured way, and check that they actually know it rather than recognizing it vaguely, go in with a clear idea of how they’ll do.
What happens if you fail the naturalization exam?
You have two attempts. If the first one does not go well, SRE sends a second appointment for about 15 business days later — use that time on the topics you hesitated on rather than starting over.
If you fail the second attempt, or do not show up to it, you wait one year from the day after your last exam before applying again, and pay the fee again. That is the real cost of going in unprepared. The retake rule in full
How much does Mexican naturalization cost in 2026?
The federal fee is MXN 9,500, the same for every route, set in Anexo 4 of the Resolución Miscelánea Fiscal 2026 and valid through 31 December 2026. It is re-ratified in the DOF each December, so check the current amount if you are paying in another year.
You pay it at a certified bank before you file, and the original receipt goes in your file. What it does not cover is the apostille, the perito traductor translation, two criminal-record certificates and travel to an in-person exam. What it actually costs
Where do you take the exam, and how do you register?
Pre-registration happens in SINNA, SRE’s nationality and naturalization system, reached from SRE’s appointment page. It only works on a computer, not on a phone, so plan to sit at a desktop or laptop for it. The appointment is free — SRE grants none through gestores or outside websites.
The exam itself is in person, and you choose the place during pre-registration: SRE’s Oficina Central in Mexico City, or one of its Módulos de Atención al Público. Which modules handle naturalization has changed over the years and current sources disagree, so take the list from SINNA itself rather than from a blog.
What topics are on the Mexican citizenship test?
The exam’s name sets its scope: the history and culture of Mexico. Mexico Ready organizes that material into 10 topics. Here are two example subjects from each:
- Pre-Hispanic Mexico: the Olmec, Maya, and Mexica civilizations; the founding of Tenochtitlan
- Conquest & Viceroyalty: the fall of Tenochtitlan in 1521; life in New Spain
- Independence & 19th Century: Miguel Hidalgo and the start of the War of Independence in 1810; Benito Juárez and the Reform
- Revolution & Modern Mexico: the Revolution that began in 1910; the Constitution of 1917
- Civics & Institutions: the three branches of government; the 32 federal entities
- Symbols & General Facts: the national flag, anthem, and coat of arms; national holidays
- Geography: states and their capitals; mountains, volcanoes, and rivers
- Art, Literature & Film: the muralists and Frida Kahlo; Octavio Paz and Mexican literature
- Music, Traditions & Food: mariachi; Día de Muertos
- Science, Education & Sport: the UNAM; Mexican athletes at the Olympic Games
Want to see the format? Try 10 free practice questions, one from each topic.
How should you study for the Mexican naturalization exam?
If you have two to four weeks before your appointment, this order works:
- Start with the must-know material. Cover the core facts everyone should know cold before anything else.
- Learn it as flashcards. A short cue and a clear answer, one fact at a time, until names and dates feel familiar.
- Switch to multiple choice. Recognizing the right answer among similar options is a different skill from recalling it. Read the explanation after every answer, right or wrong.
- Be honest about how sure you were. A lucky guess isn’t knowledge. Review what you hesitated on, not only what you got wrong.
- Widen to the less common material once the core holds.
- Read in Spanish at exam pace. With one minute per question, reading fluently matters as much as knowing the fact.
A three-week plan
- Week 1: Core flashcards, one or two topics a day. Rate how sure you were each time, and let the weak cards come back.
- Week 2: Core multiple-choice questions across all topics. Read every explanation, and repeat the sessions built from what you rated 1 to 3.
- Week 3: Extended questions, plus mixed review of everything. Practice reading each question once, at exam pace.
Leave the last few days for review, not new material. The night before, stop early.
Common questions about the exam
Can I take the exam in English?
No. The history and culture exam and the Spanish test are always in Spanish.
Will the practice questions be the same as the real ones?
No study material can promise that, and you should be wary of any that does. Mexico Ready’s questions are original and written to cover the history and culture of Mexico across 10 topics, so that whatever the exam asks is familiar ground.
Do I take the exam before or after filing my documents?
Both are part of the same application with the SRE. The Guía in the app lists the documents for your modality, and your SRE appointment details tell you what to bring on the day.