Starting a Job in Spain: Your Seguridad Social Sorted

What your employer does

Your employer is legally responsible for registering you with the TGSS (Tesorería General de la Seguridad Social) before you start working. This registration is called the alta and it activates your social security coverage. As part of the alta, the TGSS assigns you a NUSS (Número de la Seguridad Social) if you do not already have one. If you have previously worked in Spain or been registered with the Seguridad Social in any capacity, you already have a NUSS and the employer uses it. If this is your first interaction with the system, the employer requests a new one on your behalf.

The employer also handles the monthly contributions. The social security contribution is split between employer and employee. The employer pays approximately 30% of your gross salary to the Seguridad Social, covering common contingencies, unemployment, professional training, and the wage guarantee fund (FOGASA). Your share is approximately 6.35% of your gross salary and is deducted from your paycheck. You never see this money; it goes directly from your employer to the TGSS.

Your employer must also register you with the specific contribution group (grupo de cotización) that matches your role. There are 11 groups, ranging from group 1 (engineers and university graduates) to group 11 (unskilled workers). The group determines the minimum and maximum contribution bases that apply to your salary. This matters for your pension calculation later. If your employer registers you in a lower group than your actual role warrants, you contribute less and your future pension will be lower.

What you do yourself

Your employer registers you with the TGSS, but there are steps that are yours alone.

First, make sure your empadronamiento is done. This is your municipal registration at the ayuntamiento. You need it to register at a Centro de Salud and to prove where you live. Many employers do not check whether you have it, but the Centro de Salud will. Without empadronamiento, no health card.

Second, go to your local Centro de Salud with your NIE or TIE, your NUSS (which your employer should give you after the alta), and your empadronamiento to register for your Tarjeta Sanitaria. This is the physical health card that links you to a GP (Médico de Cabecera) and gives you access to the public healthcare system. The Centro de Salud assigns you a doctor based on your address. In some regions, a temporary card is given immediately and the permanent one arrives by post. In others, you get the card on the spot.

Third, verify that your employer actually completed the alta. Ask for a copy of the alta confirmation or check it yourself through the Import@ss portal (the TGSS online system) with your Certificado Digital. This is not being paranoid; it is being responsible. Cases of employers delaying the alta (to save on contributions for the first days) are not uncommon, and working without an active registration means you are not covered for workplace accidents, sick leave, or healthcare.

Your NUSS: one number, for life

Your NUSS is your personal social security number. It stays with you for life, regardless of how many jobs you change, whether you switch to being self employed, or whether you leave Spain and return. It is not the same as your NIE (which is your fiscal identification number). Think of the NIE as your identity for taxes and the NUSS as your identity for social security. You need both, and they serve different systems.

Your NUSS appears on your Tarjeta Sanitaria, on your Informe de Vida Laboral (your contribution history report), and on any correspondence from the INSS or TGSS. If your employer gave you a number during the alta, write it down and keep it safe. You will need it for the rest of your time in Spain.

What you see on your payslip

Your Spanish payslip (nómina) breaks down your salary into several components. Understanding what each deduction means helps you verify that your employer is handling things correctly.

Salario bruto is your gross salary before any deductions. Contingencias comunes (approximately 4.7% of your gross) covers general social security: healthcare, pensions, temporary incapacity. Desempleo (approximately 1.55% for permanent contracts, 1.60% for temporary) covers unemployment insurance. Formación profesional (0.10%) funds vocational training. IRPF retención is the income tax withholding, which varies based on your salary, family situation, and the tax tables for the year. The total of these deductions subtracted from your gross gives you your salario neto, the amount that lands in your bank account.

The first payslip is worth reading carefully. Check that the contribution group matches your role, that the gross salary matches your contract, and that the IRPF retention percentage looks reasonable for your situation. If you have just arrived in Spain and are under the Beckham Law, the IRPF retention should be 24% flat rather than the standard progressive rate. If it shows a higher percentage, your employer may not have applied the Beckham Law correctly.

The difference with how it works in other countries

If you are coming from the UK, the Netherlands, or Germany, the Spanish system will feel both familiar and different. The employer pays the social security contributions on your behalf, just like in those countries. But there are differences that catch people off guard.

In Spain, you do not choose a health insurance provider. There is one public system, and everyone uses it. Your contributions go to the Seguridad Social, and you access healthcare through the Sistema Nacional de Salud. There is no equivalent of choosing between different Krankenkassen (Germany) or switching between insurers (Netherlands). If you want faster access to specialists or English speaking doctors, you add private insurance on top, but the public system is your base.

Pension contributions in Spain are also not separated into a visible personal pension pot the way they might be in the UK. Your contributions build entitlements within the Seguridad Social system, and your pension is calculated based on your contribution history and final years of earnings. If you have contributed in multiple EU countries, those periods are aggregated under EU coordination rules (Regulation EC 883/2004) when you reach retirement age.

What happens if you lose your job

If your employment ends, your employer files a baja (de registration) with the TGSS. Your social security coverage does not end immediately. You are entitled to unemployment benefits (prestación por desempleo) if you have contributed for at least 360 days in the last six years. The duration of benefits depends on your total contribution period, ranging from four months (for 360 days of contributions) to two years (for 2,160 days or more).

You claim unemployment benefits at the SEPE (Servicio Público de Empleo Estatal), not at the TGSS or INSS. You must register as job seeking (demandante de empleo) within 15 working days of your last day of employment. Missing this deadline does not disqualify you, but it reduces the benefits you receive.

Your Tarjeta Sanitaria remains active while you receive unemployment benefits. If your benefits end and you do not find new employment, your healthcare coverage may lapse depending on your situation. At that point, you would need to explore the Convenio Especial or private insurance to maintain coverage.

Probation period and social security

In Spain, the probation period (periodo de prueba) does not affect your social security registration. Your employer must register you from day one, even during probation. If the employer waits until the probation period ends to register you, they are breaking the law. You are entitled to full social security coverage from your first working day, including accident insurance and sick leave. If you suspect your employer has not registered you, check through Import@ss or request a Vida Laboral report from the TGSS.

Contract types and how they affect your contributions

Spain has several contract types, and the type affects your contribution rates slightly. The most common are the indefinido (permanent contract) and the temporal (temporary contract). The unemployment contribution rate is slightly higher for temporary contracts (1.60% vs 1.55%) to reflect the higher risk of job loss. Since the 2022 labour reform, temporary contracts have become more restricted, and most new hires should be on permanent contracts unless the role is genuinely seasonal or project based.

There are also part time contracts (contrato a tiempo parcial), where contributions are proportional to your hours worked. This means your pension rights accumulate more slowly, which is worth understanding if you plan to stay in Spain long term.