The cost of employing workers in Spain involves considerably more than the salary received by employees.

Income tax, social security contributions and consumption taxes all affect how much money ultimately remains available to households and how much employers must spend on labour.

How the 53.6% Estimate Is Calculated

The institute's report, prepared by researcher Diego Sánchez de la Cruz, estimates that the annual employment cost of an average worker reaches €39,481. Of this amount, approximately €21,144 is attributed to taxes and compulsory contributions.

The calculation includes employer and employee social security contributions, personal income tax, value-added tax (VAT) and other applicable levies. It uses the employer's total employment expenditure as its starting point rather than the employee's gross salary. This distinction matters because the figure does not represent the percentage deducted directly from a worker's monthly payslip.

VAT and other consumption-related taxes are included in the calculation, even though they are paid when goods and services are purchased. Consequently, the 53.6% estimate should be understood as a broad calculation of the tax burden associated with employment and consumption, rather than a conventional measure of payroll deductions.

OECD Data Provides a Different Perspective

The OECD's 2026 Taxing Wages report provides a more standardised way to compare labour taxation between countries. It calculates the tax wedge by measuring income tax and employee and employer social security contributions, after relevant cash benefits, as a proportion of total labour costs.

According to this methodology, Spain's tax wedge for a single worker earning the average wage without children reached 41.4% in 2025, up from 41.1% in 2024. The OECD average was 35.1%. Spain therefore recorded a higher-than-average tax wedge among OECD members. Nevertheless, its 41.4% result is not directly comparable with the institute's 53.6% estimate because the two calculations include different categories of taxation.

The distinction is important for accurate international comparisons. Tax figures can appear substantially different depending on whether consumption taxes, employer contributions, employee deductions and household benefits are included.

Rising Tax Revenue and Public Spending

The institute also reported that revenue from taxes and social security contributions increased by 39.7% between 2018 and 2025, representing approximately €168.17 billion in additional nominal revenue. Nominal increases include the effects of inflation and employment growth, so they do not necessarily indicate that individual taxpayers experienced an equivalent increase in their effective tax rates.

The report also identified increases in public expenditure, including healthcare spending, which rose by 43%, and education spending, which increased by 40% over the period examined. Evaluating public finances requires considering both revenue and expenditure. Higher tax collection can provide resources for public services, infrastructure and social protection, while the quality and efficiency of spending determine how effectively those resources benefit households and businesses.

What Higher Labour Taxes Mean for Workers and Employers

Labour taxation can influence decisions throughout the employment market. For employers, social security contributions increase the total cost of hiring. For employees, income tax and personal contributions affect take-home earnings. When employment costs rise faster than business productivity, companies may have less room to increase wages or recruit additional staff. Smaller businesses can be particularly sensitive to these expenses because their financial resources are often more limited.

The effects also vary according to household circumstances. Income levels, family responsibilities, tax allowances and available benefits can produce different outcomes even for workers receiving similar salaries. A balanced assessment therefore requires more than a single national percentage. Wage growth, purchasing power, employment conditions and the value of public services also influence the overall financial position of households.

Expert Insight

Diego Sánchez de la Cruz, Head of Research at the Juan de Mariana Institute and author of the study, explained the institute's assessment of employment-related taxation during an interview with Onda Madrid. He stated: “Of every €100 an employer pays for a worker, €41 goes to public coffers.”

Understanding the distinction between payroll taxation, employer contributions and consumption taxes provides a clearer picture of how taxation affects workers, businesses and household purchasing power.