Declaration of Heirs Act Spain (Acta de Declaración de Herederos)

A Declaration of Heirs Act Spain (Acta de Declaración de Herederos Abintestato) is a notarial document prepared by a Notario under Article 55 of the Ley del Notariado (Ley de 28 de mayo de 1862, as amended by Ley 15/2015 de la Jurisdicción Voluntaria) to formally determine and declare the legal heirs of a person who has died without leaving a valid will (testamento), or whose will has been declared null, or whose will does not cover all of the estate. The Acta replaces the former court-based declaración judicial de herederos and, since the reform introduced by Ley 15/2015, may be carried out entirely before a notario competent under Article 55 Ley del Notariado — providing a faster, less costly alternative to judicial proceedings.

The intestate succession (sucesión intestada) rules governing who may be declared an heir in Spain are established in Articles 912–958 of the Código Civil (Real Decreto de 24 de julio de 1889). The Código Civil establishes a hierarchical order of intestate succession: descendants (hijos y descendientes) take priority over ascending relatives under Article 930; in their absence, parents and ascendants (padres y ascendientes) inherit under Articles 935–942; siblings and their descendants follow under Articles 943–948; and in the absence of all blood relatives, the surviving spouse (cónyuge supérstite) — or registered partner (pareja de hecho) in autonomous communities recognising this status — may inherit under Articles 944–945. The Spanish State inherits as last resort heir under Article 956 of the Código Civil.

The notario competent to conduct the Acta de Declaración de Herederos under Article 55 Ley del Notariado is the notario of the last habitual residence of the deceased (último domicilio o residencia habitual) within Spain. Where the deceased had no known habitual residence in Spain, the notario of the place where the deceased had assets is competent. The Consejo General del Notariado maintains a registro centralizado de actas de declaración de herederos accessible through notarías across Spain.

The European Union Succession Regulation (Reglamento (UE) No 650/2012) — applicable to deaths on or after 17 August 2015 — determines the applicable law for succession proceedings with international elements: habitual residence of the deceased at the time of death governs the succession unless the deceased had made a professio iuris (choice of law) in favour of their nationality law. The European Certificate of Succession (Certificado Sucesorio Europeo — CSE) may be issued by the notario to support the administration of estates with assets in multiple EU member states, under Articles 62–73 of Regulation 650/2012.

Foral civil law (derecho civil foral) in certain autonomous communities — Cataluña (governed by the Codi Civil de Catalunya), País Vasco (Ley 5/2015 de Derecho Civil Vasco), Aragón (Código del Derecho Foral de Aragón), Navarra (Fuero Nuevo de Navarra), Galicia (Ley de Derecho Civil de Galicia), Islas Baleares (Compilació del Dret Civil de les Illes Balears), and Forales de Valencia — establishes different intestate succession rules for persons who are vecinos civiles (civil residents) of those territories. Determining the applicable succession law based on the deceased's vecindad civil is a critical preliminary step in every Acta de Declaración de Herederos.

A Declaration of Heirs Act Spain is required whenever a person dies without leaving a valid will and their assets need to be identified, valued, and distributed among the legal heirs under the intestate succession rules of the Código Civil or applicable foral law.

The Acta de Declaración de Herederos is needed before the heirs can access the deceased's bank accounts, investment portfolios, or safe deposit boxes — financial institutions in Spain require either a testamento or an Acta de Declaración de Herederos before releasing funds or transferring assets, under the anti-money laundering and asset identification requirements supervised by the Banco de España.

The document is required before the heirs can accept (aceptar) or renounce (repudiar) the inheritance under Articles 988–1009 of the Código Civil, since the identity and degree of relationship of all heirs must be formally established before any acceptance or renunciation can be processed by the notario handling the herencia.

An Acta de Declaración de Herederos is needed before real estate (bienes inmuebles) belonging to the deceased can be transferred to the heirs in the Registro de la Propiedad under the Ley Hipotecaria (Decreto de 8 de febrero de 1946) — the registrador de la propiedad requires the Acta as the documentary basis for inscribing the heirs' rights on the property register.

The document is required to process the Impuesto sobre Sucesiones y Donaciones (ISD) — the inheritance tax administered by the autonomous communities under Ley 29/1987, de 18 de diciembre — since the heirs must submit the ISD declaration within 6 months of the date of death (prorrogable to 12 months on request) and must identify themselves as declarados herederos ab intestato.

An Acta is needed when the deceased was a sole shareholder or majority partner in a sociedad limitada or sociedad anónima, since the Registro Mercantil requires proof of heirship before registering the transfer of participaciones or acciones to the heirs under Articles 175–187 of the Ley de Sociedades de Capital (RDL 1/2010).

The document is required when the deceased had a life insurance policy and the beneficiary designation names the legal heirs (herederos legales) rather than named individuals — the insurance company will require the Acta before processing the claim under Articles 85–88 of the Ley de Contrato de Seguro (Ley 50/1980).

Under the Código Civil Articles 657–1087, Spanish succession law applies the legítima system (forced heirship). The Ley del Notariado governs testamentary forms (abierto, cerrado, ológrafo). The Impuesto sobre Sucesiones y Donaciones (ISD) Ley 29/1987 taxes inheritances. Foral regions (País Vasco, Navarra, Cataluña, Aragón, Baleares, Galicia) have distinct succession rules. The Reglamento UE 650/2012 governs cross-border EU successions.

A valid Declaration of Heirs Act Spain under Article 55 of the Ley del Notariado and Articles 912–958 of the Código Civil must contain the following essential elements as established by notarial practice and the Instrucciones of the Dirección General de Seguridad Jurídica y Fe Pública (DGSJFP).

Notarial Identification: Full name, notarial number (número de protocolo), and office address of the Notario conducting the proceedings. The Notario's competence under Article 55 Ley del Notariado — habitual residence of the deceased or location of assets — must be stated, together with the date of commencement of the Acta proceedings.

Deceased Person Details: Full name, DNI/NIF or NIE/passport number, date and place of birth, date, place and cause of death, last known habitual residence (domicilio o residencia habitual), civil status at death (soltero, casado, viudo, divorciado, separado), and the identity of the surviving spouse or registered partner if applicable. The death certificate (certificado literal de defunción) issued by the Registro Civil must be referenced.

Absence of Will (Intestacy Basis): Confirmation from the Registro General de Actos de Última Voluntad (RGAUV) — the central registry managed by the Ministerio de Justicia — that the deceased left no will, or that the existing will does not cover the entire estate. The certificate from the RGAUV (Certificado de Actos de Última Voluntad) dated within 15 days before filing is required.

Applicable Succession Law: Determination of the vecindad civil of the deceased — whether common civil law (Código Civil) or foral law (Cataluña, País Vasco, Aragón, Navarra, Galicia, Baleares, or Valencia) — which establishes the applicable intestate succession order. For deceased persons with foreign nationality, the Reglamento (UE) No 650/2012 analysis of applicable law must be included.

Family Tree and Heir Identification: A verified family tree (árbol genealógico) supported by certificates from the Registro Civil — birth certificates (certificados de nacimiento), marriage certificates (certificados de matrimonio), and death certificates for any predeceased relatives. Each declared heir must be identified with full name, DNI/NIE, date of birth, address, and the degree of kinship with the deceased. Minor heirs require identification of their legal guardians or parental authority holders.

Declaration of Heirs: The formal notarial declaration — based on the evidence examined — of the persons who are the legal heirs of the deceased under the applicable intestate succession law, specifying each heir's fractional share of the inheritance (cuota hereditaria) as determined by the Código Civil or applicable foral law. Where usufruct rights exist — for example, the surviving spouse's legal usufruct under Article 834 or 837 of the Código Civil — these must be separately identified.

Publicidad and Publication: Under Article 55.2 Ley del Notariado, the notario must publish the initiation of the Acta proceedings in the Boletín Oficial del Estado (BOE) or autonomous community official gazette to allow any unknown heirs to come forward within 20 working days. The Acta cannot be finalised until this period has elapsed without a valid claim from a competing heir.

Signatures and Notarial Authentication: The signatures of the requesting parties (solicitantes — typically a family member or creditor) and the Notario's authentication and signature, together with the Notario's seal (sello notarial). Forms-legal.com provides this Declaration of Heirs Act Spain template as a reference document; the actual Acta de Declaración de Herederos must always be formalised before a Notario competent under Article 55 Ley del Notariado.

Under the Código Civil Articles 657–1087, Spanish succession law applies the legítima system (forced heirship). The Ley del Notariado governs testamentary forms (abierto, cerrado, ológrafo). The Impuesto sobre Sucesiones y Donaciones (ISD) Ley 29/1987 taxes inheritances. Foral regions (País Vasco, Navarra, Cataluña, Aragón, Baleares, Galicia) have distinct succession rules. The Reglamento UE 650/2012 governs cross-border EU successions.