Spain has a large, well-developed contractor market operating through the autonomo (self-employed) framework, with strong technology, creative, and professional services communities in Madrid, Barcelona, and Valencia. This guide covers autonomo status, the IRPF withholding system, RETA social security obligations, and payment options for international employers.

The Benefits of Doing Business in Spain

  • Spain’s autonomo contractor community is large, well-regulated, and experienced in working with international clients across technology, digital marketing, design, finance, and professional services — particularly from the UK, Germany, and the United States.
  • Spain operates in the CET/CEST time zone, providing full alignment with Western European working hours and solid overlap with UK business hours for real-time collaboration throughout the day.
  • Spanish is the world’s second most spoken native language. Spanish-speaking contractors in Spain can support Latin American market operations, US Hispanic market work, and pan-European Spanish-language client needs from a single contractor relationship.
  • Spain’s euro currency and EU membership mean contractor payments, commercial contracts, and IP rights all operate within familiar European legal and financial frameworks for EU-based employers.

What Are Independent Contractors in Spain?

In Spain, an independent contractor registers as an autonomo with the Spanish Social Security Treasury (TGSS) under the RETA regime (Regimen Especial de Trabajadores Autonomos) and with the Tax Agency (AEAT) for IRPF and IVA purposes. Autonomos provide professional services under civil law service contracts (contrato de prestacion de servicios) rather than under employment contracts governed by the Workers’ Statute (Estatuto de los Trabajadores). They are responsible for their own IRPF income tax declarations and RETA social security contributions, and are not entitled to the statutory employment benefits available to employees — collective agreement-based salary, paid annual leave, sick pay funded by Social Security from day four, or severance (indemnizacion por despido improcedente).

Differences Between Employees and Independent Contractors in Spain

The table below outlines the key legal and practical distinctions.

AspectEmployeeIndependent Contractor
Business IntegrationIntegrated into the organisation; follows employer direction, uses company resources, subject to internal HR framework.External autonomo service provider; retains independence over how and when deliverables are produced.
Financial RiskEmployer bears risk; employee receives agreed salary on the pay date.Autonomo bears commercial risk; covers own RETA contributions, professional expenses, and any periods without client work.
Leave & EntitlementsEntitled to 22 working days annual leave, public holidays, sick pay from day 4 (Social Security funded), and significant employer Social Security contributions (approx. 31% of gross).No statutory leave entitlements; manages own RETA contributions for pension and Social Security coverage.
TerminationRegulated by Workers’ Statute and collective agreements; unfair dismissal indemnity 20-33 days per year of service (collective agreement may increase). SMAC conciliation and Labour Court recourse.Governed by the service contract — notice clauses and project completion conditions.
Payment StructureRegular payroll with IRPF (income tax) withheld at source; employer Social Security contributions (approx. 31% of gross salary) remitted monthly to TGSS.Issues invoices with IRPF withholding (15% for most professional services; 7% in first year of autonomous activity) and IVA (21%) charged where applicable.

Business Integration

AEAT and Labour Inspection (ITSS) examine whether a self-employed arrangement reflects genuine economic independence or constitutes what Spanish law calls “false autonomo” status (falso autonomo). The key factors are whether the client controls work schedules and methods, whether the autonomo uses the client’s infrastructure, and whether they are economically dependent on a single client. Genuine autonomos set their own hours, use their own equipment, and maintain multiple client relationships.

Financial Risk

Employees receive their salary on schedule. Spanish autonomos bear their own commercial risk, including monthly RETA contributions (which are mandatory regardless of income), professional liability insurance, VAT management, and any periods without client work. The mandatory RETA contribution structure represents a fixed overhead cost for all self-employed professionals.

Leave & Entitlements

Spain’s Workers’ Statute gives employees 22 working days of paid annual leave per year, paid public holidays, sick pay from day four of illness (funded by Social Security after day 15), and extensive employer Social Security contributions. Total employer Social Security costs in Spain add approximately 31% to gross salary costs. Autonomo contractors manage their own RETA contributions and have no leave entitlements from their clients.

Termination

Terminating an employee in Spain requires notice (15 days to one month), payment of accrued vacation pro-rata, and, for unfair dismissal, an indemnity of 33 days’ salary per year of service. SMAC pre-judicial conciliation and Labour Court proceedings are available. Ending an autonomo contract follows the service agreement’s terms — notice provisions and invoice settlement only.

Payment Structure

Employers run payrolls with IRPF withheld and employer Social Security contributions remitted monthly. Autonomos issue invoices applying a 15% IRPF withholding (which the paying company retains and remits quarterly to AEAT on their behalf) and charge 21% IVA. The client pays the net amount (invoice + IVA – 15% IRPF), remitting the retained IRPF to AEAT quarterly.

Misclassification of Independent Contractors and Its Consequences

Spain’s Labour Inspectorate (ITSS) actively enforces against “false autonomo” arrangements — it is one of the most enforcement-active labour inspection bodies in the EU. Reclassification triggers retroactive liability for all unpaid employer Social Security contributions (approximately 31% of gross from the start of the relationship), IRPF withholding shortfalls, accrued annual leave payments, and unfair dismissal indemnity for the full duration. ITSS can apply penalties of up to 187,515 EUR for the most serious violations. For technology sector employers using Spanish autonomos extensively, proper documentation of genuine contractor independence is essential.

Benefits of Hiring Independent Contractors in Spain

Large, Mature Autonomo Community

Spain has over 3.3 million registered autonomos, making it one of Europe’s largest self-employed contractor markets. The infrastructure for contractor engagements — RETA registration, invoice management, IRPF declarations — is well-established and familiar to Spanish professionals across all sectors.

Strong Technology and Creative Talent

Madrid and Barcelona have significant technology and creative industries. Spanish autonomos with expertise in software engineering, UX design, digital marketing, fintech, and management consulting regularly work with international clients, bringing European-quality deliverables at rates competitive with Northern European peers.

EUR and EU Framework

Spain’s euro currency and EU membership eliminate currency risk and provide an IP enforcement environment, data protection framework (GDPR), and commercial contract principles that are familiar and reliable for EU employers.

Spanish Language Market Access

Spain-based autonomo contractors in Spanish-language content, marketing, legal support, and customer engagement provide access to 500 million native Spanish speakers across Europe and Latin America from a single contractor relationship.

Key Considerations for Hiring an Independent Contractor in Spain

TRADE Status Awareness

An autonomo who earns more than 75% of their income from a single client may qualify for TRADE (Trabajador Autonomo Economicamente Dependiente) status, which grants additional legal protections similar to those of employees, including a right to 18 working days of paid leave and enhanced termination protections. Any autonomo engagement where single-client dependence exceeds 75% should be reviewed by a Spanish labour lawyer.

The Written Agreement

A contrato de prestacion de servicios should confirm autonomo status, specify deliverables, fees, the 15% IRPF withholding and IVA application, invoicing terms, IP ownership, and notice provisions. Spanish-language contracts governed by Spanish law are standard, with bilingual versions for international arrangements.

Intellectual Property

Spanish copyright law vests default ownership in the creator. Software created by an autonomo belongs to the autonomo unless the services contract explicitly assigns all rights to the client. Include a comprehensive IP assignment clause covering all code, designs, written content, and other work product.

Tax Law for Contractors in Spain

Companies paying Spanish autonomo contractors must retain 15% IRPF withholding from each invoice (7% in the first calendar year of autonomous activity) and remit it to AEAT on a quarterly basis (Model 111). The autonomo receives a quarterly withholding summary and credits the total retained amount against their annual IRPF declaration (Renta). The client also reports annual contractor payments to AEAT (Model 190).

Spanish autonomos pay IRPF at progressive rates ranging from 19% (on income up to EUR 12,450) to 47% (on income above EUR 300,000) annually. After crediting quarterly IRPF retentions withheld by clients, autonomos pay or receive a refund for the balance in their annual Renta declaration. Autonomos with income above EUR 1,000 from non-withholding sources must also make quarterly IRPF advance payments (Model 130).

RETA (Regimen Especial de Trabajadores Autonomos) social security contributions are mandatory for all registered autonomos. Since 2023, RETA contributions are calculated on a real income basis with monthly rates ranging from approximately EUR 230 (lowest income tranche) to EUR 590 (highest tranche). VAT (IVA) at 21% applies to most professional services; autonomos charge IVA on invoices, file quarterly IVA returns (Model 303), and remit the net IVA collected to AEAT.

How to Pay an Independent Contractor in Spain?

SEPA Bank Transfers

SEPA transfers in EUR to Spanish bank accounts (CaixaBank, BBVA, Santander, Sabadell, Bankinter) are the standard payment method. Settlement is same-day or next-day within the SEPA zone. Note that the invoice amount payable includes IVA (21%) but excludes the 15% IRPF retention, which the client retains and remits separately to AEAT.

Wise

Wise supports EUR transfers to Spanish bank accounts and is practical for non-European employers making regular payments to Spanish autonomos. Mid-market EUR rates and transparent fees are particularly useful for USD or GBP-based payers.

Revolut Business

Revolut Business is widely used by Spanish technology autonomos for receiving international payments. EUR transfers via Revolut Business settle quickly and are familiar to the Spanish contractor community.

SWIFT

For non-SEPA payers, SWIFT EUR transfers to Spanish IBAN accounts are the standard international payment method. Allow two to three business days. Confirm with the autonomo that their bank accepts international SWIFT transfers.

Hire Contractors in Spain With Our Support

Spain’s large autonomo market, strong technology talent, and EUR framework make it one of Western Europe’s most important contractor markets — but ITSS misclassification enforcement, RETA obligations, quarterly IRPF retention mechanics, and TRADE status risk require specialist knowledge. Remote People’s Spain team provides Contractor of Record services and compliance management for Spanish autonomo engagements. Contact us to get started.

Frequently Asked Questions

Yes. Foreign companies can engage Spanish autonomo contractors under a contrato de prestacion de servicios. The IRPF 15% retention obligation falls on the paying company only if it has a registered Spanish presence. Foreign companies without a Spain entity do not withhold IRPF — the autonomo manages their own AEAT quarterly advance payments (Model 130) instead. IVA charged by the autonomo is also handled differently for cross-border B2B services.

A "falso autonomo" is a worker classified as self-employed (autonomo) who in practice functions as an employee — following the client's direction, working exclusively for one client, using their equipment, and having no genuine economic independence. Spanish Labour Inspection actively pursues false autonomo arrangements and can reclassify them as employment, triggering retroactive Social Security and IRPF liabilities.

SEPA bank transfers in EUR are the standard method — same-day or next-day for European employers. The invoice amount includes IVA (21%) and the client retains 15% IRPF before paying. Wise is practical for non-European employers. Revolut Business is widely used by Spanish autonomo contractors.