Modelo 650 — Inheritance Tax Declaration Spain

Modelo 650 — Inheritance Tax Declaration Spain (Impuesto sobre Sucesiones y Donaciones — ISD, modalidad de sucesiones) is the self-assessment declaration required under Ley 29/1987, de 18 de diciembre, del Impuesto sobre Sucesiones y Donaciones (LISD) arts. 20–31 and Real Decreto 1629/1991 (Reglamento del ISD) arts. 66–89, by which heirs (herederos), legatees (legatarios), and beneficiaries of life insurance policies (beneficiarios de seguros de vida) who receive assets or rights upon the death of a Spanish resident or upon the transfer of assets located in Spain must declare and pay the inheritance tax to the tax authority of the competent autonomous community (comunidad autónoma) within six months of the deceased's death (fallecimiento).

The Impuesto sobre Sucesiones y Donaciones (ISD) is one of Spain's oldest direct taxes, predating the current constitutional framework, and is one of the most significant taxes affecting Spanish residents in estate planning. The ISD applies to mortis causa transfers — inheritances and legacies received upon death — as well as to inter vivos donations (donaciones) declared through Modelo 651 or 652. Modelo 650 specifically covers mortis causa successions (adquisiciones mortis causa) under LISD art. 3.a.

The ISD is a ceded tax (tributo cedido) under Ley 22/2009 de cesión de tributos a las Comunidades Autónomas — autonomous communities have extensive legislative powers to set reductions in the taxable base (reducciones), modify national tariff rates (tarifas), establish their own allowances and rebates (bonificaciones), and expand or restrict the state law framework of Ley 29/1987. This delegation of powers has led to enormous variation in effective inheritance tax burdens across Spain: the Comunidad de Madrid and Andalucía (since 2021) have effectively abolished inheritance tax for direct-line heirs (spouses, children, parents) by granting 99% tax rebates (bonificaciones); Catalonia and the Comunitat Valenciana impose moderate effective rates for direct-line heirs with significant reductions but not full rebates; and some autonomous communities apply significant effective inheritance tax burdens on collateral relatives (cousins, aunts, uncles) and unrelated beneficiaries.

The national tariff (tarifa estatal) under LISD art. 21 is a progressive schedule ranging from 7.65% on the first €7,993 of taxable base to 34% on amounts exceeding €797,555. The taxable base is reduced by: the state reduction for close relatives — €15,956 for Group II relatives (children 25 and over, parents, spouses) under LISD art. 20; higher reductions for minor children and disabled beneficiaries; and the value of any usufruct (usufructo) retained by a surviving spouse. After applying reductions, the resulting taxable base (base liquidable) is multiplied by the applicable tariff percentage, then further adjusted by the patrimony multiplier (coeficiente multiplicador) under LISD art. 22 — which increases the tax for beneficiaries with pre-existing wealth. Finally, autonomous community bonificaciones (rebates) are applied, which in some communities (Madrid, Andalucía) reduce the final tax to near zero for direct-line heirs.

Modelo 650 must be filed within six months of the date of death (fecha de fallecimiento). An extension of six additional months may be requested from the autonomous community's tax authority within the initial five months — the request must be filed before the six-month deadline expires, and the extension is not automatic. During the extension period, late-payment interest (intereses de demora) begins to accrue from the end of the original six-month period.

Modelo 650 — Inheritance Tax Declaration Spain must be filed by all heirs (herederos ab intestato or testamentarios), legatees (legatarios), and life insurance beneficiaries (beneficiarios de seguros de vida) who receive assets or rights in Spain upon the death of a person who was fiscally resident in Spain, or upon the transfer of Spanish-situs assets from a non-resident deceased.

Modelo 650 is required when a Spanish resident dies and their estate passes to their children — even if the autonomous community where the estate is administered (Madrid, Andalucía) offers a 99% bonificación that results in virtually no tax due. A nil or near-nil Modelo 650 must still be filed to formally close the inheritance process, enable Registro de la Propiedad registration of inherited real estate, and transfer bank accounts and financial assets to the heirs' names.

Modelo 650 is required when a person inherits real estate located in Spain from a non-resident deceased. Under LISD art. 7 and Real Decreto 1629/1991 art. 16, the competent tax authority for non-resident inheritances involving Spanish real estate is the State Tax Administration (AEAT — Oficina Nacional de Gestión Tributaria) rather than an autonomous community. These cases are declared through Modelo 650 filed with the AEAT rather than a regional hacienda.

Modelo 650 is required when a beneficiary receives a life insurance policy payment upon the insured's death, and the beneficiary and the deceased have an insurable interest relationship (spouse, child, parent). Life insurance death benefits are subject to ISD under LISD art. 3.c and must be included in Modelo 650 even if the policy was separate from the estate.

Modelo 650 is required when a surviving spouse acquires the usufruct (usufructo universal) of the deceased's estate under common Spanish inheritance law or under the testamentary disposition — the usufruct constitutes a gratuitous acquisition subject to ISD. The surviving spouse declares the usufruct value in Modelo 650 and pays the corresponding ISD, which in most autonomous communities is very low or zero for spouses due to bonificaciones.

Modelo 650 is not required for the transmission of inheritance rights between co-heirs (renunciation in favour of another heir — renuncia traslativa) which is treated as a donation (Modelo 651); nor for corporate asset transfers which follow separate taxation rules.

Under Spanish law, the Constitución Española 1978 is the supreme law. The Código Civil governs contractual obligations under Article 1255 (libertad de pactos). The AEAT administers taxation. The Juzgados de Primera Instancia have general civil jurisdiction. The Ley 39/2015 governs administrative procedure. The LOPDGDD (LO 3/2018) and RGPD govern data protection through the Agencia Española de Protección de Datos (AEPD).

A correctly completed Modelo 650 — Inheritance Tax Declaration Spain under Ley 29/1987 and Real Decreto 1629/1991 must include the following mandatory sections and data elements.

Deceased (Causante) Identification: Full legal name, DNI/NIE/NIF, date and place of birth (fecha y lugar de nacimiento), date and place of death (fecha y lugar de fallecimiento), last fiscal residence address (último domicilio fiscal habitual), and marital status (estado civil) at the time of death. Proof of death is provided by the certificado de defunción (death certificate) from the Registro Civil.

Her/His Identification: Full legal name, DNI/NIE/NIF, date of birth, address, and degree of kinship (parentesco) with the deceased — the kinship group (grupo) determines the applicable national reduction and coeficiente multiplicador. The four LISD groups are: Group I — minor children under 21; Group II — children over 21, parents, grandparents, grandchildren, spouses; Group III — siblings, nephews, nieces, aunts, uncles; Group IV — other relatives and unrelated persons.

Hereditary Estate Inventory (Inventario de Bienes): A complete list of all assets and rights forming part of the hereditary estate (caudal hereditario) at the time of death, with their valuations as at the date of death: real property (with Catastro reference values and market values); financial assets (bank accounts, investment funds, shares, bonds) with balances at date of death; vehicles with fiscal values; life insurance policies; business assets (participaciones en sociedades); personal property above minimal values; and any debts or deductible charges (deudas y cargas deducibles — mortgages, funerary expenses up to LISD limits, last illness medical expenses, estate administration fees).

Valuation Rules: Under LISD art. 9, each asset is valued at its real value (valor real) at the date of death. Real property is now valued at the higher of the Catastro reference value and the declared market value under Ley 11/2021. Bank account balances are taken from statements as at the date of death. Shares listed on a stock exchange are valued at the average of the last quarter's prices. Unlisted shares (participaciones en sociedades no cotizadas) are valued using the theoretical book value (valor teórico contable) from the last balance sheet, unless the tax authority considers a higher value more appropriate.

Taxable Base Calculation: The gross estate value (valor bruto de los bienes) less deductible debts and charges gives the net estate value (valor neto). Each heir's share (haber hereditario individual) is calculated according to the will (testamento) or intestate succession rules (sucesión ab intestato) under Código Civil arts. 807–1009. Each heir's individual taxable amount is then reduced by the applicable LISD reductions (for kinship group, disability, habitual residence of the deceased — reducción por vivienda habitual LISD art. 20.2.c up to €122,606 per heir for direct descendants inheriting the family home), yielding the base liquidable.

Autonomous Community Reductions and Bonificaciones: After applying national reductions, autonomous community additional reductions and rebates (bonificaciones fiscales) are applied. Madrid: 99% rebate on ISD quota for Group I and II heirs (effectively 0% inheritance tax). Andalucía: 99% rebate since 2021 for Group I and II heirs. Catalonia: significant reductions but no full rebate — effective rates of 5–20% for direct heirs. Comunitat Valenciana: reductions and bonificaciones with moderate effective rates. Canary Islands: 99.9% rebate for Group I and II. The applicable autonomous community is that of the deceased's last habitual fiscal residence.

Forms-legal.com provides this Modelo 650 template as a reference for understanding the inheritance tax process. Spanish inheritance tax planning is highly complex — the interplay of national LISD rules, autonomous community legislation, international tax treaties (particularly relevant for UK, German, and French nationals with Spanish property), and the six-month filing deadline make professional advice from an abogado especialista en derecho sucesorio or gestor fiscal essential.

Under LISD (Ley 29/1987) and Real Decreto 1629/1991, inheritance tax is governed and administered by autonomous community haciendas. The Dirección General de Tributos (DGT) issues binding rulings on ISD questions. Ley 11/2021 de fraude fiscal updated property valuation rules. The Tribunal Constitucional confirmed the constitutionality of autonomous community ISD differentiation in STC 60/2015. The AEAT's Oficina Nacional de Gestión Tributaria handles non-resident inheritances under Modelo 650.

Under Spanish law, the Constitución Española 1978 is the supreme law. The Código Civil governs contractual obligations under Article 1255 (libertad de pactos). The AEAT administers taxation. The Juzgados de Primera Instancia have general civil jurisdiction. The Ley 39/2015 governs administrative procedure. The LOPDGDD (LO 3/2018) and RGPD govern data protection through the Agencia Española de Protección de Datos (AEPD).