Consulting Agreement Spain (Contrato de Consultoría)

A Consulting Agreement Spain (Contrato de Consultoría) is a written civil or commercial contract by which an independent professional consultant (consultor) agrees to provide specialised advisory or technical services to a client (cliente) in Spain in exchange for agreed fees, without the subordination and dependency that characterise an employment relationship under the Estatuto de los Trabajadores (RDL 2/2015). The legal basis is the Código Civil Article 1544, which governs the contrato de arrendamiento de servicios — a service contract under which the service provider undertakes to perform services (obligación de medios) rather than guarantee a specific result, distinguishing it from a contrato de obra (Article 1588 CC) where a result is promised.

The critical legal distinction in Spain between a genuine consulting agreement and a disguised employment relationship (relación laboral encubierta or falso autónomo) is one of the most litigated issues in Spanish labour law. The Estatuto de los Trabajadores Article 1.1 defines the employment relationship by four characteristics: personal work (personalidad), voluntary agreement (voluntariedad), dependency (dependencia or ajenidad in the sense of working within the employer's organisational sphere), and remuneration (retribución). The Juzgados de lo Social and the Tribunal Supremo consistently apply the doctrine of primacía de la realidad — the substance of the relationship prevails over its formal label. If the Inspección de Trabajo y Seguridad Social (ITSS) determines that a consulting relationship is in fact an employment relationship, the company faces reclassification, back payment of social security contributions with surcharges to the Tesorería General de la Seguridad Social (TGSS), and LISOS fines.

Genuine consultants operating as autónomos (self-employed professionals) in Spain must be registered with the Régimen Especial de Trabajadores Autónomos (RETA) under the Ley General de la Seguridad Social (RDL 8/2015). They must also be registered for IVA (Impuesto sobre el Valor Añadido) and IRPF (Impuesto sobre la Renta de las Personas Físicas) purposes with the Agencia Estatal de Administración Tributaria (AEAT) under Modelo 036 or 037. The client company must withhold IRPF at the applicable professional activities rate (currently 15%, or 7% for the first three years of professional activity) from fees paid to autónomo consultants and declare the withholdings via Modelo 111 (quarterly) and Modelo 190 (annual).

Where the consultant operates through a legal entity — typically a Sociedad Limitada Unipersonal (SLU) — the services are rendered as intercompany services subject to Impuesto sobre Sociedades (IS, corporate income tax) at 25% or the reduced rate of 15% for newly created companies under Ley 27/2014 del IS. The contracting company must verify that the service fees between related parties comply with transfer pricing rules under Article 18 of the Ley del IS, which requires arm's-length pricing documented by the Documentación de precios de transferencia filed with the AEAT.

Intellectual property rights in deliverables produced under a consulting engagement are governed by the Ley de Propiedad Intelectual (LPI, RDL 1/1996). Under Articles 14 and 17 LPI, the consultant as author retains moral rights (derechos morales) — which are inalienable — and may transfer economic rights (derechos patrimoniales) by written agreement. The consulting contract must include an explicit IP assignment clause transferring economic rights in all deliverables (reports, software, designs, data analyses) to the client, specifying the scope, territory, and duration of the assignment, to avoid ambiguity about post-engagement exploitation rights.

Data protection obligations under Reglamento (UE) 2016/679 (RGPD) and Ley Orgánica 3/2018 (LOPDGDD) apply whenever the consultant processes personal data on behalf of the client — in that case the consulting agreement must include a data processing agreement (acuerdo de encargado de tratamiento) under RGPD Article 28, specifying the subject matter, duration, nature, and purpose of processing, the type of personal data and categories of data subjects, and the obligations and rights of the controller (cliente).

A Consulting Agreement Spain is required whenever a Spanish business, public body, or individual engages an independent professional — whether an autónomo or a consulting company — to provide specialised advisory, analytical, or technical services on a project or ongoing basis.

The Contrato de Consultoría is needed when a company retains a management consultant, financial adviser, IT specialist, marketing expert, legal consultant, or other professional who operates independently — not as an employee — to deliver specific expertise for a defined period or project. The written contract is the primary evidence of the independent nature of the relationship and protects both parties against reclassification risk.

A Consulting Agreement is required when the consulting fees will exceed modest amounts — the AEAT cross-references Modelo 190 annual withholding declarations against the consultant's IRPF tax return (Modelo 100), and discrepancies trigger audit reviews. A signed contract with clear fee structures, invoicing procedures, and IRPF withholding provisions prevents fiscal disputes.

The contract is needed when the engagement involves delivery of confidential business information — business plans, financial data, customer lists, technology specifications, or trade secrets — requiring confidentiality obligations and post-engagement restrictions on use and disclosure.

A Consulting Agreement Spain is required when the consultant will create intellectual property deliverables — written reports, software code, databases, graphic designs, or analytical models — that the client intends to exploit commercially. Without a written IP assignment clause, the client may lack title to use the deliverables under LPI Article 17.

The contract is necessary when the consulting engagement crosses borders — where a non-Spanish consultant provides services to a Spanish client, or a Spanish consultant serves clients in other EU member states — as the agreement defines which law governs (Spanish law under Reglamento Roma I, Reglamento (CE) 593/2008, absent other choice) and which courts have jurisdiction (typically courts at the place of business of the defending party under Reglamento Bruselas I bis).

A Consulting Agreement is also needed in regulated sectors — financial services (supervised by the Comisión Nacional del Mercado de Valores — CNMV), healthcare, telecommunications (regulated by the Comisión Nacional de los Mercados y la Competencia — CNMC), and energy — where specific conflict of interest, confidentiality, and professional responsibility rules supplement the general civil law framework.

Under the Ley de Sociedades de Capital (LSC) RDL 1/2010, the Registro Mercantil maintains the register of Spanish companies. The Código de Comercio 1885 governs commercial obligations. The Agencia Estatal de Administración Tributaria (AEAT) administers Impuesto sobre Sociedades (IS) under Ley 27/2014. The Comisión Nacional de los Mercados y la Competencia (CNMC) enforces competition law. The Código Civil governs general contractual obligations under Article 1255.

A valid Consulting Agreement Spain under Código Civil Article 1544 and applicable tax law must contain the following essential elements to protect both client and consultant and to withstand scrutiny from the Inspección de Trabajo and the AEAT.

Identification of Parties: Full legal name, DNI/NIE/NIF, professional registration number (if applicable), and registered address of both the client (cliente) and the consultant (consultor). If the consultant is an autónomo, the RETA registration number (número de afiliación a la Seguridad Social) and the IAE epígrafe (actividad económica registrada with the AEAT) should be recorded. If a company, the Registro Mercantil number and NIF are required.

Scope of Services: A precise description of the consulting services to be provided — the subject matter, methodology, geographic scope, and any agreed deliverables (entregables) such as reports, presentations, or software prototypes. The scope of services clause is critical for distinguishing the consulting agreement from an employment contract — services should not integrate the consultant into the client's permanent organisational structure.

Independent Contractor Status: An express clause confirming that the consultant is an independent contractor (profesional independiente) and not an employee of the client — that the consultant operates under their own organisational criteria, uses their own tools and equipment, works for multiple clients, and is not subject to the client's disciplinary regime. This clause alone does not prevent reclassification if the operational reality differs, but it documents the parties' intention.

Fees and Payment Terms: The agreed consulting fees — whether a fixed monthly retainer (honorarios fijos), hourly rate (tarifa por hora), daily rate (tarifa por día), or project fee (honorarios por proyecto) — stated in euros, excluding IVA. The invoice schedule, payment terms (typically net 30 days from invoice date), and any expense reimbursement policy. The IVA rate applicable to professional services (currently 21% general rate under Ley 37/1992) and the IRPF withholding rate (15% standard; 7% for first three years) must be specified.

Term and Termination: The start date and either a fixed end date (for project-based engagements) or provisions for ongoing indefinite engagement with notice periods. The right of either party to terminate for material breach (incumplimiento esencial) with a reasonable cure period, and the client's right to terminate for convenience with agreed notice (typically 30–60 days) and the consultant's entitlement to fees for work completed through the termination date.

Confidentiality: Broad confidentiality obligations covering all non-public business, technical, and financial information disclosed to the consultant in the course of the engagement, surviving termination for a defined period (typically 3–5 years). The definition of confidential information should be thorough, with standard carve-outs for publicly available information and information independently developed by the consultant.

Intellectual Property Assignment: An explicit assignment of all economic rights (derechos patrimoniales) in deliverables created by the consultant under the engagement to the client, pursuant to LPI RDL 1/1996. The assignment should cover all current and future forms of exploitation, for the maximum statutory term, and throughout the world. The consultant's inalienable moral rights under LPI Article 14 cannot be waived but may be subjected to obligations regarding attribution and modification rights.

Data Protection: Where the consultant processes personal data on behalf of the client, an integrated data processing agreement (DPA) under RGPD Article 28, specifying processing instructions, security measures (medidas de seguridad técnicas y organizativas), sub-processor restrictions, data subject rights assistance obligations, and breach notification procedures under RGPD Article 33 (72-hour reporting to the Agencia Española de Protección de Datos — AEPD).

Governing Law and Dispute Resolution: Spanish law governs the agreement. The preferred dispute resolution mechanism — direct negotiation, mediation before the Cámara de Comercio, or litigation before the Juzgado de Primera Instancia of the client's registered domicile — should be stated.

Forms-legal.com provides this Consulting Agreement Spain template as a practical starting point. The autónomo/employee boundary and IP assignment rules require careful drafting — both parties should have the contract reviewed by an abogado with expertise in derecho mercantil and derecho laboral.

Under the Ley de Sociedades de Capital (LSC) RDL 1/2010, the Registro Mercantil maintains the register of Spanish companies. The Código de Comercio 1885 governs commercial obligations. The Agencia Estatal de Administración Tributaria (AEAT) administers Impuesto sobre Sociedades (IS) under Ley 27/2014. The Comisión Nacional de los Mercados y la Competencia (CNMC) enforces competition law. The Código Civil governs general contractual obligations under Article 1255.