At ABD, we understand that understanding the base salary and the salary structure is essential for both employees and employers. Human Resources (HR) teams and specialized HR software play a key role in this task.
Here we explain clearly and concisely what the base salary is and how it relates to the payslip.

Definition of the base salary
The base salary (SB) is the amount agreed upon between a worker and the company as compensation for their work. It is measured in effective working hours or by unit of production, and it is the amount the company pays directly for the work performed.
It should not be confused with the gross or net salary, although it is related to both.
Key concepts about salary and the payslip
When reviewing payslips, it is important to distinguish between several terms such as gross salary, net salary, and the interprofessional minimum wage (SMI).

Differences between gross salary and net salary
- Gross salary: Includes the base salary plus all salary supplements and extra payments.
- Net salary: This is the amount the employee receives after deductions, which include Social Security contributions and income tax withholdings (IRPF).
The basic formula to understand these concepts is:
- Net salary = Gross salary + supplements – deductions
Interprofessional Minimum Wage (SMI)

The minimum wage (SMI) is the minimum amount a worker can receive in Spain, which in 2024 is set at €15,876 gross per year.
It is important to note that the base salary may be lower than the SMI if salary supplements are added to compensate for the difference.
Calculation of the base salary in Spain

The base salary (SB) is determined by subtracting income tax withholdings (IRPF) and Social Security contributions from the gross salary. The formula would be:
- Base salary = Gross salary – (withholdings + contributions)
Additional components on the payslip
In addition to the base salary (SB), there are other important components on a payslip:
- Salary supplements: Additional amounts granted for reasons such as night shifts, seniority, or job-related risk.
- Bonuses: Extra payments that may include benefits in kind, such as housing.
- Compensation payments: Amounts paid in cases of dismissal or relocation.
Answers to common questions about the base salary

Where is the base salary located on the payslip?
It usually appears at the top of the payslip, clearly labeled as “base salary” or “basic salary”.
What is the difference between base salary and minimum wage (SMI)?
The minimum wage (SMI) is the legally required minimum remuneration, while the base salary is the amount agreed upon between the company and the employee for the specific job.
Is the base salary before or after deductions?
The base salary is the amount before deductions.
Closing

Understanding the SB and its connection to payroll is essential for effective human resources management. At ABD Consulting and IT Solutions, we offer Human Resources Software that:
- Automate payroll and variable calculations.
- Facilitates the download and sharing of payroll summaries.
- Allows the tracking of monthly incidents with analyzed data.
Download our free payroll guide
We invite you to download our free payroll guide — a useful tool for human resources professionals.
With this guide, you will be able to deepen your understanding of payroll management and optimize how you handle it.
Download it and improve your skills today.