Social Security in Spain (Seguridad Social)

What Is Spain’s Seguridad Social?

The Seguridad Social is Spain’s public social protection system, providing coverage for employees, self-employed workers (autónomos), and their dependants in areas including:

• Healthcare (asistencia sanitaria)
• Temporary disability (incapacidad temporal — sick pay)
• Permanent disability and occupational accidents
• Retirement pensions (jubilación)
• Unemployment benefits (desempleo / paro)
• Maternity and paternity leave (nacimiento y cuidado de menor)
• Death and survivor benefits

All individuals working in Spain — whether as employees or self-employed — must be registered with and contribute to the Social Security system.

Main Social Security Regimes

The vast majority of workers in standard employment relationships are in the RGSS.

Employer Obligations: Registration and Contribution

Step 1: Employer Registration

Before hiring any employee, the company must register as an employer with Social Security (obtaining a Código de Cuenta de Cotización — CCC). Registration is done at the local TGSS (Tesorería General de la Seguridad Social) office.

Step 2: Employee Registration

Each employee must be registered (afiliación y alta) with Social Security before their first day of work using the Sistema RED (electronic filing system). The TGSS cross-references company payroll reports against registered employees; unregistered employees — those working “en negro” (off the books) — result in significant penalties plus back-payment of all contributions.

Step 3: Monthly Contribution Settlement

Each month, the employer submits the contribution settlement through Sistema RED and pays contributions (employer + employee share) by the last day of the following month. Contributions are calculated on the base de cotización (contribution base) — the gross salary with certain minor adjustments — subject to a maximum contribution base (approximately EUR 4,720/month in 2025).

Contribution Rates (2025 Approx.)

Additional rates apply for overtime and for sector-specific work accident tariffs, which vary by IAE activity code and accident risk level.

Minimum Interprofessional Wage and Social Security

Spain’s SMI (Salario Mínimo Interprofesional) sets the minimum salary floor, which is also the minimum Social Security contribution base for most workers. The SMI for 2025 is EUR 1,134/month (14 payments, equivalent to EUR 15,876/year). Employers cannot pay below the SMI, nor can Social Security contributions be calculated on a lower base.

International Workers: Posting and Bilateral Agreements

Companies with employees temporarily posted from Spain to another country, or inbound from abroad, must consider:

• EU/EEA posting: Under EU Regulation 883/2004, a posted worker can remain on their home country’s Social Security system for up to 24 months (A1 certificate required).
• Bilateral Social Security agreements: Spain has bilateral agreements with numerous non-EU countries (including the US, UK post-Brexit, Mexico, and others) preventing double contributions and coordinating pension accrual.

Without proper A1 or equivalent documentation, an employee working in Spain becomes liable for Spanish Social Security from day one.

How BMC Can Help

We manage complete Social Security compliance: employer CCC registration, employee affiliation, monthly Sistema RED submissions, posting certificate applications, and resolution of TGSS inspection notices. We also coordinate with employment lawyers on restructuring, collective dismissals, and Social Security debt settlement agreements.