Standard 5-year Naturalization (Ley de Nacionalidad Arts 19-21)

Standard naturalization in Mexico is a federal, single-authority procedure governed exclusively by the Secretaría de Relaciones Exteriores (SRE-DGAJ). No state-level naturalization exists: CPEUM Art 73 fracción XVI grants the federal government exclusive jurisdiction over nationality matters. The default requirement is five years of immediately preceding legal residency in Mexico, acreditada through an INM Residente Temporal or Residente Permanente card — Residente Temporal Estudiante status does not qualify.

What distinguishes Mexico's naturalization framework from most cohort comparators is the absolute shield of CPEUM Art 37 Apartado A, which applies immediately and permanently once a person becomes mexicano por nacimiento. For naturalized citizens, the shield is not available in the same terms: Art 37 Apartado B provides two grounds for loss of naturalized Mexican nationality — voluntary acquisition of a foreign nationality, or five-year continuous residence abroad. This structural asymmetry is the cascade- for MX-NAT-01: the non-deprivation guarantee for por nacimiento nationals anchors the entire naturalization framework as a gateway to a protected, irreversible status (for future generations) rather than a revocable grant.

The examination requirement consists of two components: a Spanish-language proficiency test and a Mexican history-and-culture integration examination, both administered by SRE-DGAJ. The Acuerdo DOF 2022-10-07 modernized the examination protocol. Exemptions apply to refugees (determined by SEGOB-COMAR), minors, and persons over 60 years of age (Spanish exam only, not history-culture). Failure of the examination triggers a one-year waiting period before a new application may be submitted; a maximum of two attempts is permitted before that wait.

• Five years of legal, continuous residency in Mexico immediately preceding the application date (Art 19)
• INM Residente Temporal or Residente Permanente card; Residente Temporal Estudiante does NOT qualify
• Absence rule: absences totaling more than 6 months during the two years immediately preceding application interrupt the residency count (Art 21)
• Solvencia económica — ability to support oneself (Art 19 fr III)
• No criminal record (Art 19 fr IV)
• Spanish proficiency exam (SRE-DGAJ administered)
• Mexican history-and-culture examination (SRE-DGAJ administered; exempt: refugees per SEGOB, minors, persons over 60)
• Renunciation oath (Art 17): applicant must renunciar toda sumisión, obediencia y fidelidad a cualquier Estado extranjero + protestar adhesión a CPEUM, leyes, and Mexican authorities
• Carta de Naturalización issued by SRE-DGAJ upon approval

MX eligibility framework (NAT): bucket-specific anchored in CPEUM Art 30 (Apartado A jus soli + Apartado B jus sanguinis) + Ley de Nacionalidad 1998 (DOF 1998-01-23, última reforma DOF 2012-04-23) + Reglamento DOF 2009-06-17 (Calderón). Constitutional ceiling CPEUM Art 30/32/37. NAT eligibility: Ley Nacionalidad 1998 Art 19 — 5-year continuous residence (general); 2-year cohorts (latinoamericanos, ibéricos, tratado-reciprocity); Spanish-language + Mexican-history examination; buena conducta + medios suficientes de subsistencia + renuncia de nacionalidad anterior (since 1998-03-20 dual permitted for Mexicans-by-birth, renunciation requirement applies only to applicants).

1. Obtain and maintain qualifying INM residency status (Residente Temporal or Permanente) for five uninterrupted years
2. Submit application via SINNA portal (sinna.sre.gob.mx) or in person at SRE-DGAJ; gather supporting documentation: residency card, CURP, acta de nacimiento of country of origin (apostille), proof of economic solvency, proof of address
3. INM/SEGOB issues an opinion within 45 días hábiles (Art 21 Reglamento)
4. SRE-DGAJ schedules and administers the Spanish proficiency and history-culture examinations
5. On passing both examinations, the Carta de Naturalización is issued within approximately 3 months of the SEGOB opinion
6. Applicant takes the renunciation oath before SRE officials (Art 17)
7. RENAPO updates CURP status; SRE issues new Mexican passport on application
8. Failure/retry rule: maximum 2 examination attempts; failure triggers 1-year mandatory wait before new application

Filing authorities: SRE-DGAJ; SINNA portal; SEGOB-INM (residency prerequisite). MX procedure (naturalization): (1) SRE-DGAJ Dirección General de Asuntos Jurídicos intake; (2) 5-year residence requirement (general track per Ley Nacionalidad 1998 Art 19 fracción I) or 2-year (cohorts: latinoamericanos + ibéricos + tratado-reciprocity); (3) Spanish-language + Mexican-history examination; (4) Carta de Naturalización issuance after Presidential or Secretarial decree publication DOF; (5) renunciation of prior nationality per Art 17 Ley Nacionalidad (since 1998-03-20 dual-nationality permitted, renunciation no longer required for Mexicans by birth).

• Primary statute: Ley de Nacionalidad 1998 Arts 19-21 (5-year default residency immediately preceding application)

• Examination protocol: Acuerdo DOF 2022-10-07

• Constitutional anchor: CPEUM Art 30 Apartado B fracción I; Art 37 Apartados A + B

• Operative period: 1998-03-20 → present

• Authority: SRE-DGAJ (sole federal authority); SEGOB-INM (residency prerequisite); SINNA portal (sinna.sre.gob.mx)

• Tarifa 2025-26: MXN 9,500

• Reform Arc context: Ley 1993 → Ley 1998 (abrogó 1993 directly, NOT 1934 ) → Reglamento 2009 → Acuerdo DNN 2014 → Acuerdo Examen 2022

Primary statute: Ley de Nacionalidad 1998 Arts 19-21 (5-year default residency immediately preceding application) + Reglamento DOF 2009-06-17 Cap III + Acuerdo DOF 2022-10-07 examination protocol. Operative period: 1998-03-20 → present. Mexican citizenship legal framework: Constitución Política de los Estados Unidos Mexicanos (CPEUM) Art 30, 32, 37 primary constitutional framework — Art 30 nationality acquisition (Apartado A jus soli + Apartado B jus sanguinis); Art 32 dual-citizenship + Mexican-by-naturalization restrictions; Art 37 ciudadanía + nacionalidad loss framework. Constitutional anchor: CPEUM is the longest-continuous-single-text constitution globally (since 1917-02-05); Apartado A fracción I textually preserved across reforms 1934/1969/1974/1997/2021. Implementing statute: Ley de Nacionalidad 1998 (DOF 1998-01-23; última reforma DOF 2012-04-23). Implementing regulation: Reglamento de la Ley de Nacionalidad DOF 2009-06-17 (Calderón sexenio — NOT 2014). Key recent reforms: Art 30 multi-generational jus sanguinis reform DOF 2021-05-17 (Sheinbaum-era); Indigenous Originario framework DOF 2024-09-30 reforming Art 2 + 27 + 73 (CPEUM); Oaxaca Usos y Costumbres 417-418 SNI framework. Treaty anchors: ILO 169 (Mexico 2nd globally ratifier, 1990-09-05 after Norway 1990-06-19); 1933 Montevideo denuncia trifecta (1997-2000 — Inter-American Citizenship Treaties withdrawal); ICJ Avena 2004 (Mexico v USA — consular notification); Treaty of Guadalupe Hidalgo 1848 (territorial cession + nationality transition framework). NOT party to 1961 Stateless Convention. Apex: Suprema Corte de Justicia de la Nación (SCJN) — Pleno + Primera Sala + Segunda Sala. Indigenous parallel framework distinct.

-: Ley de Nacionalidad DOF 1998-01-23 Arts 19-21 (Cámara de Diputados) -: Reglamento DOF 2009-06-17 Cap III (SRE-DGAJ implementing regulation) -: SEGOB-COMAR refugee determination framework for exam exemption -: Ley sobre Refugiados, Protección Complementaria y Asilo Político DOF 2011-01-27 -: SRE-DGAJ tarifa 2025-26 official schedule -: SRE SINNA portal naturalization guidelines -: Acuerdo DOF 2022-10-07 examination protocol -: SRE documentation requirements reference

Source pins:,,,. MX source register: T1 primary: CPEUM (Constitución Política de los Estados Unidos Mexicanos) DOF publication; Ley de Nacionalidad 1998 (DOF 1998-01-23, última reforma DOF 2012-04-23); Reglamento de la Ley de Nacionalidad DOF 2009-06-17 (Calderón); SCJN sentencias + AI (acciones de inconstitucionalidad) + AR (amparo en revisión) + ADR (amparo directo en revisión); SRE-DGAJ Dirección General de Asuntos Jurídicos; RENAPO Registro Nacional de Población; DOF Diario Oficial de la Federación. T2 corroborating: INE + Consulados de México publications; UN Treaty Collection treaty-status; ILO ratifications database; ICJ Avena 2004 judgment. Cross-border (cohort-distinct): Spain Ley 36/2002 + Italy Legge 74/2025.