Payroll and Social Security management in Spain has grown significantly more complex over the past three years as a result of overlapping legislative reforms: the 2021 labour reform, the SMI update, the implementation of the Intergenerational Equity Mechanism (MEI), new contract types, the shift to income-based contributions for the self-employed, and the progressive digitalisation of the Direct Settlement System. This whitepaper provides HR and finance managers in Spanish companies with a comprehensive framework for managing these obligations correctly in 2025.
1. Regulatory framework
Spain’s payroll and contribution system is governed by a body of interacting legislation:
- Workers’ Statute (ET): Consolidated Text approved by Royal Legislative Decree 2/2015, as amended by Royal Decree-Law 32/2021 on labour reform.
- General Social Security Act (LGSS): Consolidated Text approved by Royal Legislative Decree 8/2015.
- General State Budget Act: updates annually the SMI, maximum and minimum contribution bases, and contribution coefficients.
- Contribution Order: published annually by the Ministry of Inclusion, Social Security and Migration, setting contribution rates for each contingency and worker category.
- Sector collective agreements: determine salary scales, professional categories, and supplements applicable in each sector, which take precedence over the ET’s minimum conditions where more favourable to the worker.
2. Payroll structure: remuneration components and contributions
A correctly structured payroll distinguishes between components that form part of the Social Security contribution base and those that are excluded from it:
Components included in the contribution base
Under Article 147 of the LGSS, the contribution base comprises all economic payments received by the worker, in cash or in kind, derived from the employment relationship, with the exclusions expressly provided for. The most common components forming the base are:
- Base salary.
- Salary supplements (seniority, responsibility, productivity, language allowances, night shift pay where of a salary nature).
- Overtime (subject to specific rates: 6.70% employer, 2.00% employee for force majeure overtime; 6.70% employer, 4.70% employee for other overtime).
- Extraordinary payments (pro-rated monthly or computed in the months of accrual).
- Benefits in kind (company car, private health insurance, childcare vouchers if exceeding exemption limits, loans at below-market rates).
Components excluded from the contribution base
Article 109 LGSS and the Contribution Order establish excluded components, the most significant of which are:
- Per diems and travel expenses: excluded up to the limits in Article 9 of the Personal Income Tax Regulation (€53.34/day with overnight stay in Spain, €26.67/day without; €91.35/day with overnight stay abroad, €48.08/day without).
- Relocation allowances: excluded where they do not exceed regulatory limits.
- Voluntary improvements to Social Security protection: collective life insurance, occupational pension plans (within applicable tax limits).
- Transport vouchers: up to €136.36 per employee per month.
- Childcare vouchers: fully exempt from contributions where the service is provided by authorised centres.
3. Contribution rates 2025
The contribution rates for the General Social Security Regime in 2025, according to the current Contribution Order, are:
| Contingency | Employer | Employee | Total |
|---|---|---|---|
| Common contingencies | 23.60% | 4.70% | 28.30% |
| AT and EP (varies by CNAE) | Variable | — | Variable |
| Unemployment (indefinite contract) | 5.50% | 1.55% | 7.05% |
| Unemployment (temporary contract) | 6.70% | 1.60% | 8.30% |
| FOGASA | 0.20% | — | 0.20% |
| Vocational training | 0.60% | 0.10% | 0.70% |
| MEI | 0.58% | 0.12% | 0.70% |
The Intergenerational Equity Mechanism (MEI), introduced by Royal Decree-Law 2/2023, adds an additional contribution that increases annually until 2029 in accordance with the approved schedule, with the aim of reinforcing the pension system’s sustainability.
For the portion of salary exceeding the maximum contribution base (projected at approximately €4,909 per month for 2025), the solidarity quota introduced by Law 21/2021 applies: an additional rate of 5.5% for the employer and 1.5% for the employee on the excess above the maximum base.
4. The 2021 labour reform: impact on contracts and payroll
Royal Decree-Law 32/2021 of 28 December, on labour reform, introduced structural changes to contract types with direct impact on payroll management:
Elimination of the project-based contract. The open-ended project and service contract (obra y servicio determinada) was abolished on 30 March 2022. Companies that held such contracts had to transform them into fixed-discontinuous contracts (for seasonal or discontinuous work) or ordinary indefinite contracts. Incorrect application of this transformation has generated numerous Labour Inspectorate claims.
The fixed-discontinuous contract. This is the key mechanism introduced by the 2021 reform for sectors with seasonal activity (hospitality, agriculture, tourism, education). Fixed-discontinuous workers contribute during active periods, but their seniority is calculated as if the employment relationship were continuous. The base salary for unemployment benefits of these workers is calculated on the contributions from the 180 days actually worked in the 360 days prior to the legal unemployment situation.
Structural temporary contracts. From the reform onwards, temporary employment is limited to two situations: production circumstances (maximum duration of six months, extendable to twelve by collective agreement) and worker substitution (maximum duration for the duration of the cause). Exceeding the maximum duration or chaining temporary contracts for more than eighteen months within a twenty-four-month period creates a presumption of indefinite contract.
5. Flexible remuneration: tax and contribution optimisation
Flexible remuneration allows employees to replace part of their cash salary with certain products or services with tax advantages and, in some cases, Social Security contribution exclusions. The most widely used arrangements in Spain are:
Private health insurance. The employee may replace up to €500 per month of their salary with private health insurance without the cost being treated as income in kind subject to personal income tax or Social Security contributions. For insurance covering the employee’s spouse and children, the limit extends to €1,500 per year per family member.
Restaurant vouchers. Food cheques or cards with a value of up to €11 per day are exempt from personal income tax. However, they have been subject to Social Security contributions since 2023, which reduced the incentive of this arrangement for employers.
Transport vouchers. Public transport cards of up to €136.36 per month are exempt from personal income tax and excluded from contributions.
Occupational pension plans. Employer contributions to the employee’s occupational pension plan are deductible for the company for Corporation Tax purposes, are not subject to personal income tax at the time of contribution (only on drawdown), and are excluded from contributions up to €8,000 per year if the plan is an occupational scheme. Law 12/2022 on occupational pension plan regulation expanded the advantages of these plans to encourage their extension to SMEs.
Company vehicle. The provision of a vehicle for personal use is treated as a benefit in kind for personal income tax purposes. However, if the vehicle is electric or low-emission, the reduction applicable to the vehicle’s market value (30% for vehicles with emissions below 120g CO2/km, 40% for electric or hydrogen vehicles) significantly reduces the tax impact for the employee.
6. The Direct Settlement System: SILTRA and RED DIRECT
The Direct Settlement System (SLD) is the mechanism by which the Social Security General Treasury (TGSS) directly calculates the contributions payable by each company, based on information that the company transmits about its workers, salaries, and contract types. The process is:
- The company transmits monthly data on its workers to the TGSS through the RED system (via AFIL and CRA files) or directly from the SILTRA application.
- The TGSS calculates the corresponding contributions and issues a draft settlement (RLC and RNT).
- The company confirms or rectifies the draft and proceeds to payment before the last day of the month following the accrual period.
Errors in data transmission — contracts with incorrect categories, incorrect AT/EP codes, contribution bases below actual figures — are the most frequently detected by the Labour Inspectorate in its ex-officio reviews and generate the highest costs when they must be regularised retroactively.
7. Temporary incapacity: management and base salary calculation
Temporary incapacity (IT) for common contingencies is paid by Social Security from the fourth day of sick leave (the first three days are at the employee’s expense, unless improved by collective agreement). The employer manages delegated payment — paying the worker the Social Security subsidy and deducting it from the contribution settlement — which generates the obligation to correctly calculate the regulatory base:
- IT base salary for common contingencies: the contribution base of the month prior to sick leave divided by the number of days worked in that month.
- Benefit percentage: 60% of the regulatory base from the fourth to the twentieth day (inclusive), and 75% from the twenty-first day onwards.
Collective agreements typically improve these benefits, supplementing up to 100% of salary. The company must ensure that the supplement agreed in the collective agreement does not exceed the salary the worker would have received had they been working, to avoid undue improvement situations that Social Security may reclaim.
8. Record-keeping and documentation obligations
Law 9/2021 on working hours recording requires all companies to record the daily working hours of all their employees, including start and end times. The record must be kept for four years and be available to workers, their legal representatives, and the Labour Inspectorate. Penalties for non-compliance range from €626 to €6,250 per serious infringement under the TRLISOS.
Payroll and contract documentation must be kept for four years for Social Security obligations and six years for tax obligations (personal income tax) under the General Tax Act. Digitalisation of these documents with recognised electronic signatures has full legal validity and facilitates responses to Inspectorate requests.
9. Payroll management dashboard: key performance indicators
HR and finance managers should monitor the following indicators monthly to detect deviations before they become problems:
- Labour cost-to-turnover ratio: a key labour efficiency indicator, with sector benchmarks available from INE and MITES statistics.
- Absenteeism cost: sick leave days, workplace accidents, and other absences, with direct cost (salary plus contributions during the absence period) and indirect cost (replacement, lost productivity).
- Temporary contract rate: maintaining a high percentage of temporary employment after the 2021 labour reform is an indicator of inspection risk and presumption of fraud.
- Average contribution base per employee: allows detection of systematic errors in contributions (incorrect bases, non-contributed supplements).
- Average payroll closing time: a closing process taking more than five working days is a sign that the process is not sufficiently automated or that there are data quality problems in the system.
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