Notarial Declaration of Heirs Mexico (Declaratoria de Herederos Notarial)

A Notarial Declaration of Heirs (Declaratoria de Herederos) in Mexico is a formal legal proceeding conducted before a Notario Público (or, alternatively, before a civil court judge) by which the legal successors of a deceased person who died without a valid will (intestado) are officially recognized and documented. The legal framework governing intestate succession and the declaration of heirs is the Código Civil Federal (CCF), principally Article 1602, which establishes who has the right to inherit when a person dies without a testamentary disposition (sin testamento), and Articles 1599 through 1637 of the CCF, which set out the complete intestate succession order (orden de sucesión legítima) for Mexico's federal jurisdiction.

Article 1602 of the CCF establishes the legal hierarchy of intestate heirs: descendants (hijos, nietos, bisnietos) take priority in the first order of succession (primer orden sucesorio) and inherit equally; in their absence, ascendants (parents, grandparents) inherit under the second order; the spouse or concubine (cónyuge o concubino) has special rights alongside descendants and ascendants under Articles 1624–1635 CCF; and in the absence of all these, collateral relatives (siblings, nephews, nieces) inherit up to the fourth degree under Articles 1602 and 1610 CCF. Beyond the fourth degree, the estate passes to the Beneficencia Pública (public charity) under CCF art. 1636.

Mexican intestate succession law operates at both federal and state levels. The Código Civil Federal applies to succession in the Federal District (Ciudad de México) and to situations involving federal jurisdiction, while each of Mexico's 31 states has its own Código Civil that governs succession within state territory. Most state codes follow the CCF model closely, but procedural details — particularly regarding who may conduct the sucesión intestamentaria (whether only courts or also Notarios Públicos) — vary by state. The Ley del Notariado of each state determines whether Notarios Públicos in that state have jurisdiction to conduct declaratoria de herederos proceedings.

Since the Law reforms in Ciudad de México and many states, Notarios Públicos have jurisdiction to process declaratorias de herederos when all heirs are in agreement (sucesión intestamentaria en vía notarial) — providing a faster, less costly alternative to judicial proceedings (juicios intestamentarios) before a Juez de lo Familiar or Juez Civil under the Código de Procedimientos Civiles. The notarial route is available when all potential heirs are identified, located, and in agreement, and when no heir's rights are disputed or uncertain.

The Declaratoria de Herederos Notarial is the first step in the succession process — once heirs are formally recognized, they proceed to the Adjudicación Sucesoria (distribution of estate assets) through which property is transferred to heirs, and which requires separate notarial deeds for real property registered with the Registro Público de la Propiedad, separate bank inheritance procedures under Ley de Instituciones de Crédito art. 56, and IMSS and ISSSTE pension beneficiary designations.

A Notarial Declaration of Heirs in Mexico under CCF art. 1602 and the applicable state Ley del Notariado is needed whenever a person dies intestate (sin testamento — without a notarial will, private will, or any valid testamentary instrument under the Código Civil) and their legal successors must be formally established to access the estate.

The declaratoria de herederos is needed to transfer real property from the deceased's estate to heirs: Notarios Públicos who draft deeds of adjudication (escrituras de adjudicación) to transfer real property from the estate to heirs under the Ley del Notariado require a prior declaratoria de herederos formally recognizing the heirs. Without this declaration, the Registro Público de la Propiedad (RPP) will not record the transfer of property from the estate.

The declaration is needed to access bank accounts, investment accounts, and safe deposit boxes held by the deceased at financial institutions. Under Ley de Instituciones de Crédito art. 56 and CNBV regulations, banks require a death certificate (acta de defunción), a declaratoria de herederos, and identification of the heirs before releasing funds or transferring accounts to heirs. The declaration is the authoritative legal document that banks accept as proof of heirship.

The declaration is needed to collect IMSS survivor benefits (pensión de viudez y orfandad), ISSSTE survivor pensions, INFONAVIT unspent housing fund balances, and AFORE retirement savings balances. Each of these government institutions has specific requirements for proving heirship, and a notarial or judicial declaratoria de herederos is the primary accepted document.

The declaratoria is also needed to manage the deceased's SAT (Servicio de Administración Tributaria) obligations: heirs must notify the SAT of the death through the RFC modification procedure, file any pending tax returns for the deceased as responsables solidarios under CFF art. 26, and ultimately request RFC cancellation upon estate conclusion — all of which require the heirs to be formally identified.

The declaration is needed even when the estate consists only of modest assets: many families delay the declaratoria process assuming it is only necessary for large estates, but the legal inability to transfer any registered property — vehicles (Registro Público Vehicular), bank accounts, real estate — without a formal succession procedure means that even small estates require the process to properly conclude the deceased's affairs.

A valid Notarial Declaration of Heirs in Mexico under CCF art. 1602 and the applicable state Ley del Notariado must contain the following essential elements to be legally effective and accepted by courts, registries, banks, and government agencies.

Identification of the Deceased: Full legal name (nombre completo) of the deceased (de cujus), CURP, RFC, date of birth, place of birth, date of death (fecha de fallecimiento) as recorded in the acta de defunción issued by the Registro Civil, and last known domicile. The acta de defunción must be an original or certified copy issued by the Registro Civil and is the foundational document for any succession proceeding under Mexican law.

Confirmation of Intestate Status: Documentary evidence that the deceased did not leave a valid will. This typically consists of a certificado de no testamento (non-will certificate) issued by the Archivo General de Notarías of the Asociación del Notariado Mexicano or the relevant state notarial archive, confirming that no registered will exists in the national or state notarial registry. Wills registered with RENATNOT (Registro Nacional de Avisos de Testamento) must be searched to confirm no testamentary instrument exists.

Identification of Legal Heirs: Full legal name, CURP, RFC (if applicable), date of birth, and kinship relationship (parentesco) of each person claiming heirship under CCF art. 1602. Supporting documents must establish each heir's legal relationship to the deceased: birth certificates (actas de nacimiento) from the Registro Civil proving filiation for children and grandchildren, marriage certificate (acta de matrimonio) for the surviving spouse, and birth certificates of the deceased's parents if claiming under the second order of succession.

Surviving Spouse Rights: Where applicable, documentation of the marital regime (régimen matrimonial) — separation of property (separación de bienes) or conjugal partnership (sociedad conyugal) — under which the marriage operated, established by the acta de matrimonio and any capitulaciones matrimoniales (prenuptial or postnuptial property agreements). The surviving spouse's rights differ substantially based on the marital property regime, as assets under sociedad conyugal are jointly owned and only the deceased's half forms the estate.

Declaration by the Notario Público: The Notario Público issues the Declaratoria de Herederos based on the evidence presented, formally recognizing the legal heirs by name and their respective inheritance fractions under the CCF. The notarial declaration (escritura notarial) is entered in the Notario's Protocolo (official register), given a Número de Escritura, and provided to the heirs in certified copies (testimonios notariales) authenticated with the Notario's signature and official seal.

Witnesses (Testigos de Conocimiento): Under most state Leyes del Notariado, the declaratoria procedure requires two adult witnesses (testigos de conocimiento) who personally know the heirs and can attest to their identity and relationship to the deceased. The witnesses must provide official identification and sign the notarial instrument.

Forms-legal.com provides this Notarial Declaration of Heirs template as a preparation and reference document for families in Mexico dealing with intestate succession. The actual declaratoria must be conducted before a licensed Notario Público with territorial jurisdiction over the last domicile of the deceased or the location of estate assets. Families should also consult a Licenciado en Derecho specializing in derecho sucesorio to identify all estate assets and obligations, and to coordinate with the SAT, IMSS, AFORE, and financial institutions for the complete settlement of the estate. Related documents include the Poder Notarial para Actos de Dominio (mx-poder-notarial-actos-dominio) for authorizing an attorney-in-fact to represent the estate.