Last updated: 5 August 2026.
Quick answer. Data protection compliance is one of the first legal fronts a startup must cover. In Spain this means the GDPR, directly applicable across the European Union, together with the Spanish LOPDGDD (Organic Law 3/2018), which complements it, and the LSSICE for commercial communications and e-commerce, all under the supervision of the Spanish Data Protection Agency (AEPD). The essentials include identifying the personal data the startup processes, choosing a valid legal basis for each processing activity, drafting a privacy policy, keeping a record of processing activities and responding to data subjects’ rights. Building these habits from the start is far cheaper than correcting them after a complaint or an inspection.
1.- Understanding of Data Protection Legislation:
- Familiarisation with the privacy and data protection laws applicable in the location of the startup.
- Ensure compliance with regulations such as the General Data Protection Regulation (GDPR) in the European Union.
2.- Applicable data protection regulations:
The main legal rules applicable in Spain are as follows:
- General Data Protection Regulation (GDPR): The GDPR is a European Union regulation that sets out the rules for the processing of personal data in all EU member states, including Spain. The GDPR gives citizens rights over their personal data and establishes obligations for organisations that process that data.
- Ley Orgánica de Protección de Datos y Garantía de los Derechos Digitales (LOPDGDD): This Spanish law regulates specific aspects of data protection and complements the GDPR. The LOPDGDD establishes additional provisions on the processing of personal data and citizens’ rights.
- Spanish Data Protection Agency (AEPD): The AEPD is the supervisory authority for data protection in Spain. It is in charge of ensuring compliance with privacy-related regulations and sanctioning organisations that do not comply with the regulations.
- Law on Information Society Services and Electronic Commerce (LSSICE): This law regulates aspects related to the information society and electronic commerce, including commercial communications and consent for the use of personal data in the digital environment.
- Sectoral regulations: In addition to the aforementioned laws, there are specific regulations governing data protection in sectors such as health, finance, education and others. For example, Royal Decree 1720/2007 establishes security measures for data processing in the health sector.
- Penal Code: The Spanish Penal Code also provides for penalties for data protection offences, such as disclosure of secrets.
- Case law: The case law of Spanish and European courts is also relevant, as it establishes precedents and judicial decisions that affect the interpretation of data protection laws.
3.- Appoint a Data Protection Officer (DPO):
- Designate a person or entity to be responsible for overseeing data protection and compliance.
4.- When is it mandatory to appoint a Data Protection Officer?
According to the GDPR, it is mandatory to appoint a DPO in the following cases:
- Public Authorities and Public Bodies: Public authorities and public bodies, regardless of their size, must appoint a DPO.
- Businesses or Organisations Conducting Large Scale Data Processing Operations: If a company or organisation carries out data processing operations that require regular and systematic observation of data subjects on a large scale, it must appoint a DPO.
- Companies or Organisations Processing Special Categories of Data: If a company or organisation processes special categories of data, such as health data or biometric data, on a regular and systematic basis, it must appoint a DPO.
- Companies or Organisations Conducting Data Protection Impact Assessments (DPAs): When a company or organisation conducts DPOs of processing operations that may give rise to a high risk to the rights and freedoms of individuals, a DPO is required.
- Companies or Organisations Requiring Designation by National Law: EU member states may establish additional national requirements for the designation of a DPO in certain sectors or for certain types of data processing.
5.- Data Collection and Storage:
- Define what data are collected and stored and for what purpose.
- Establish policies for the secure retention and disposal of data.
6.- User Consent:
- Obtain the informed consent of users before collecting their data.
- Provide clear and simple options for users to manage their consent.
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7.- Data Security:
- Implement appropriate security measures to protect user information.
- Consider encryption, two-factor authentication and other security practices.
8.- Data Breach Notification:
- Have an action plan to notify users and authorities in case of a data breach.
9.- Privacy Policy:
- Develop a clear and accessible privacy policy on the start-up’s website.
- Ensure that the privacy policy complies with local and international regulations.
10.- Staff training:
- Educate startup staff on data protection best practices and their responsibility for compliance.
11.- Data Protection Impact Assessment (DPA):
- Conduct a PIA when processing high-risk data to assess and minimise risks.
12.- Contracts with suppliers:
- Review and establish robust contracts with service providers handling start-up data to ensure compliance.
13.- Regular Audits:
- Conduct regular data protection audits to assess ongoing compliance and make improvements.
14.- Response to Requests for User Rights:
- Establish procedures for responding to user requests for access, correction and deletion of data.
15.- User Education and Awareness:
- Inform users about their privacy rights and how their data will be handled.
Data protection is a key concern for startups, and following these best practices can help ensure customer trust and legal compliance in an ever-evolving digital environment.
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Related tool, free to use: the data protection tools.
For advice applied to your case, see our Data Protection practice area.
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Frequently asked questions
The core framework is the General Data Protection Regulation (GDPR), which applies directly in every EU member state, complemented in Spain by the LOPDGDD (Organic Law 3/2018) and, for commercial communications and online services, the LSSICE. The Spanish Data Protection Agency (AEPD) is the supervisory authority in charge of enforcing these rules and sanctioning non-compliance.
The AEPD is the national supervisory authority for data protection in Spain. It monitors compliance with the GDPR and the LOPDGDD, handles complaints from data subjects, issues guidance for organisations and can impose sanctions on companies that fail to comply with privacy rules, including startups of any size.
Because most early activities of a startup already involve personal data, such as user registrations, marketing databases, analytics and employee records. Setting up a lawful basis, a privacy policy and a record of processing from the beginning avoids accumulating infringements that are far more expensive to correct later and reassures investors during due diligence.
At a minimum, a privacy policy describing what data is collected and why, a record of processing activities, data processing agreements with providers that handle personal data on the startup’s behalf, and internal procedures to respond to data subjects’ rights and to manage security breaches within the legal deadlines.
Yes. The GDPR applies to any organisation that processes personal data of individuals in the European Union, regardless of its size or turnover. Some obligations are modulated for smaller organisations, but the core duties, such as having a lawful basis, informing users and securing the data, apply fully to startups.
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