Modelo 601 — Stamp Duty Declaration (AJD) Spain

Modelo 601 — Stamp Duty Declaration Spain (Actos Jurídicos Documentados — AJD) is the self-assessment declaration required under Real Decreto Legislativo 1/1993 (Texto Refundido del Impuesto sobre Transmisiones Patrimoniales y Actos Jurídicos Documentados — ITP y AJD), arts. 27–32, by which the taxpayer (sujeto pasivo) must declare and pay the stamp duty levied on the formalisation of notarial deeds (documentos notariales), commercial documents (documentos mercantiles), and administrative documents (documentos administrativos) subject to the Actos Jurídicos Documentados tax in Spain. The AJD is one of three modalities within the ITP y AJD framework — alongside Transmisiones Patrimoniales Onerosas (ITP — Modelo 600) and Operaciones Societarias (OS).

The Actos Jurídicos Documentados tax under RDL 1/1993 arts. 27–32 has two components: (1) the fixed quota (cuota fija) — a nominal charge per stamped page of official notarial paper (papel timbrado or timbre de protocolo); and (2) the variable quota (cuota variable) — a percentage charge on the value of the act formalized, applicable specifically to first-copy notarial deeds (primeras copias de escrituras y actas notariales) that contain acts or contracts registrable in the Registro de la Propiedad, Registro Mercantil, or Registro de Bienes Muebles, provided those acts are not subject to ITP or Operaciones Societarias, and the taxable amount (base imponible) can be determined. The variable quota AJD is the most significant component in economic terms.

The AJD variable quota applies principally to: new property purchases from developers (promotors) subject to IVA — the buyer pays AJD on the notarial deed of sale; mortgage deeds (préstamos hipotecarios) — following Ley 5/2019 reguladora de los contratos de crédito inmobiliario, the AJD on mortgage deeds is borne by the lender (banco o entidad crediticia) rather than the borrower; novation and cancellation of mortgages; deeds of property division (divisiones horizontales for new apartment buildings); deeds of grouping, division, or aggregation of registered properties (agrupaciones, segregaciones, divisiones de fincas); and deeds of increase in share capital (ampliaciones de capital social) registrable in the Registro Mercantil.

The AJD is a ceded tax under Ley 22/2009 — autonomous communities set their own variable quota rates within the framework of RDL 1/1993. General rates range from 0.5% to 1.5% of the deed's taxable base, with most autonomous communities applying 1% to 1.5%. The mortgage AJD rate (now borne by lenders since Ley 5/2019) varies by autonomous community — Andalucía applies 1.2%; Catalonia 1.5%; Madrid 0.75%; Extremadura 1.8% (for mortgages over €400,000). The Basque Country and Navarre apply foral rules.

Modelo 601 must be filed and AJD paid within 30 working days of the date of the notarial deed or document subject to AJD, with the autonomous community's tax authority (consejería de hacienda or agencia tributaria autonómica) of the territory where the main registrable registry (Registro de la Propiedad, Registro Mercantil) is located. Each autonomous community has its own Modelo 601 form, electronic filing system, and specific rates and exemptions.

The AJD complements Spain's notarial system — all notarial deeds (escrituras públicas, actas notariales, pólizas intervenidas) are executed before notarios públicos who are members of the Colegio Notarial. The Consejo General del Notariado coordinates notarial data sharing with the AEAT through the Índice Único Notarial under Real Decreto 45/2007, enabling the AEAT to automatically cross-check AJD filings against notarised deed data and identify missing Modelo 601 declarations within days of deed execution.

Modelo 601 — Stamp Duty AJD Spain must be filed whenever a notarial deed, commercial document, or administrative document subject to the AJD variable quota is executed and the document must be registered in a public registry. The 30-day filing window from deed execution is strict.

Modelo 601 is required when a buyer purchases a new residential property (vivienda nueva) from a developer (promotor inmobiliario) subject to IVA at 10%. The buyer pays VAT to the developer and must separately file Modelo 601 with the autonomous community to pay AJD on the notarial deed of sale. AJD applies because the deed is registrable in the Registro de la Propiedad and the transaction is subject to IVA (not ITP). The AJD base is the declared purchase price.

Modelo 601 is required for mortgage deed execution (constitución de hipoteca). Following Ley 5/2019 de contratos de crédito inmobiliario (LCCI), the AJD on mortgage deeds is now borne by the lender (banco, caja de ahorros, or financial entity) rather than the borrower. Banks therefore file Modelo 601 for the AJD on each mortgage deed they execute. The AJD base for mortgages is the total guaranteed amount (total garantizado) including principal, interest, costs, and any agreed maximum guarantee amount.

Modelo 601 is required when a company executes a deed of share capital increase (ampliación de capital social) registrable in the Registro Mercantil — specifically for increases of share capital (capital social) through cash contributions or property contributions. The AJD base is the value of the assets contributed or the amount of the capital increase.

Modelo 601 is required for deeds of property subdivision (segregación de fincas), horizontal division (división horizontal for apartment buildings), or grouping (agrupación) registrable in the Registro de la Propiedad, when those operations are not themselves subject to ITP or Operaciones Societarias.

Modelo 601 is needed for mortgage novation and cancellation deeds — novation of mortgage terms (changes to interest rate, term, or conditions) and formal cancellation of mortgages upon full repayment require AJD, though cancellation deeds typically carry a reduced AJD base or exemption in many autonomous communities.

Modelo 601 is not required for deeds that are exempt from AJD under RDL 1/1993 art. 45 — including transfers between spouses in dissolution of matrimonial property regime, certain social housing (VPO — Vivienda de Protección Oficial) transactions, and deeds executed by diplomatic entities.

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 601 — Stamp Duty AJD Spain under Real Decreto Legislativo 1/1993 arts. 27–32 must contain the following mandatory data elements, noting that the exact form layout varies by autonomous community.

Taxpayer Identification: Full legal name and DNI/NIE/NIF of the AJD taxpayer (sujeto pasivo). Under RDL 1/1993 art. 29, the AJD taxpayer for notarial documents is the acquirer (adquirente) — the buyer in a sale deed or the borrower in a mortgage deed (though mortgage AJD is now borne by the lender since Ley 5/2019). For company capital increases, the taxpayer is the company (sociedad). For deeds where both parties have interests, the person requesting the first copy (persona que inste la expedición de las primeras copias) is the taxpayer.

Document Identification: Protocol number (número de protocolo), date of execution, notary's name (nombre del notario), notary district and college (colegio notarial), and a description of the document type (escritura de compraventa, escritura de hipoteca, escritura de ampliación de capital, etc.) and its registrable nature (registrable en el Registro de la Propiedad / Registro Mercantil / Registro de Bienes Muebles).

Taxable Base for Variable Quota: The declared value of the act being documented. For sale deeds, the purchase price or the Catastro reference value (whichever is higher under Ley 11/2021). For mortgage deeds, the total secured amount (responsabilidad hipotecaria total) including principal, ordinary interest, default interest (intereses de demora), costs and fees (costas y gastos). For capital increases, the nominal value of the new shares plus any share premium (prima de emisión). Accurate identification of the AJD base is critical, as autonomous communities can challenge the declared value.

Applicable Rate and Tax Calculation: The AJD variable quota rate established by the autonomous community where the primary registry is located, applied to the taxable base. Common rates: 1% (Madrid, Castilla y León), 1.2% (Andalucía), 1.5% (Catalonia, Baleares), 1.8% (Extremadura for higher-value mortgages). Reduced rates may apply for social housing, primary residence, or specific economic activities in various autonomous communities.

Exemptions and Reductions: AJD exemptions under RDL 1/1993 art. 45 must be identified with the applicable exemption code. Social housing (VPO/VPP) transactions, certain intra-group corporate restructurings under Ley 27/2014 del Impuesto sobre Sociedades, and specific regional exemptions must be declared with documentary evidence of exemption eligibility.

Fixed Quota Records: Notaries handle the fixed AJD quota (timbre de papel) directly on the notarial document — this is typically a nominal amount per page and is included in notary fees. The variable quota is what the taxpayer declares and pays through Modelo 601.

Payment and Registry Submission: Modelo 601 is filed with payment to the autonomous community's tax authority. The paid Modelo 601 receipt must then be presented to the relevant Registro de la Propiedad, Registro Mercantil, or Registro de Bienes Muebles as a condition for registration of the deed.

Forms-legal.com provides this Modelo 601 template as an educational resource. AJD compliance for mortgage deeds, commercial property transactions, and corporate restructurings involves complex base calculations and autonomous community-specific rules — engage a gestor administrativo, notaría, or asesor fiscal specialising in ITP y AJD.

Under RDL 1/1993 arts. 27–32, AJD governs stamp duty on documented legal acts. Ley 5/2019 (LCCI) reallocated mortgage AJD from borrower to lender. Ley 11/2021 established Catastro reference values as minimum tax bases. Ley 22/2009 cedes AJD regulatory powers to autonomous communities. The Dirección General de Tributos (DGT) issues binding AJD rulings.

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).