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GDPR Obligations calendar_today Updated: 7 April 2026 schedule 5 min read

DPO: What Is a Data Protection Officer and Do You Need One?

A DPO (Data Protection Officer) is a mandatory role under the GDPR, but not for everyone. This article explains when you do and don't need one, and what SMEs should arrange in practice.

summarize Key Takeaways
  • check_circle Most SMEs do not need a DPO, but you should designate someone responsible for GDPR
  • check_circle A DPO is mandatory if you process special category data on a large scale or systematically monitor individuals
  • check_circle A DPO can be internal or external, but must be able to work independently
  • check_circle No DPO needed? Then at minimum ensure a GDPR contact point within your organisation

What is a DPO?

A DPO (Data Protection Officer) is someone within an organisation who oversees compliance with the GDPR. The DPO is the contact point for the supervisory authority and for the individuals whose data you process. It is a formal role established in GDPR Articles 37 to 39.

Important: the DPO is not responsible for GDPR compliance. That responsibility lies with the organisation itself. The DPO advises, monitors, and flags issues, but is not personally liable if something goes wrong.

When is a DPO mandatory?

The GDPR requires a DPO in three situations:

1. Government bodies and public organisations Every public authority that processes personal data must appoint a DPO. No exceptions.

2. Large-scale, systematic monitoring of individuals This applies when your core activity consists of systematic and large-scale observation of individuals. Think of:

  • CCTV surveillance companies that provide monitoring for multiple clients
  • Companies that track online behaviour on a large scale for advertising purposes
  • Security companies that systematically monitor individuals

3. Large-scale processing of special categories of data Special categories include health data, biometric data, data on race or ethnicity, political opinions, religious beliefs, and criminal records. Examples:

  • Hospitals and healthcare institutions
  • Laboratories performing genetic tests
  • Insurers processing health data on a large scale

When do you NOT need a DPO?

Most SMEs fall outside the three categories above. A few examples:

  • A construction company with 25 employees processes employee and customer data, but that’s not the core activity and it’s not large-scale. No DPO needed.
  • An online shop with 10,000 customers processes names, addresses, and order history. These are ordinary personal data, not special categories, and the core activity is sales, not data processing. No DPO needed.
  • An accounting firm with 5 employees processes financial data of clients. Although sensitive, this is not a “special category” in the GDPR sense. No DPO needed.
  • A small marketing agency that manages campaigns for clients. Unless you profile on a large scale, no DPO needed.

The key terms are “core activity” and “large scale”. If you process personal data in support of your actual business activity (and nearly every business does), that’s not your core activity.

What does a DPO actually do?

If you do need a DPO (or voluntarily appoint one), these are the tasks:

  • Inform and advise the organisation and employees on GDPR obligations
  • Monitor GDPR compliance, including assigning responsibilities, awareness, and training
  • Advise on DPIAs (Data Protection Impact Assessments)
  • Act as contact point for the supervisory authority
  • Act as contact point for data subjects with questions or complaints about their data

A DPO can be internal (an employee) or external (a hired specialist). In both cases:

  • The DPO must be able to work independently and may not receive instructions on how to perform their role
  • The DPO may not have a conflict of interest - the CEO, HR manager, or IT manager cannot also be the DPO
  • The DPO must receive sufficient resources and access to carry out their work

No DPO needed? Here’s what you SHOULD arrange

Not needing a formal DPO doesn’t mean you have nothing to do. Your organisation must:

  1. Designate a GDPR contact point - someone internally who knows how GDPR documentation is organised and can handle data subject requests
  2. Maintain records of processing activities - this is mandatory for virtually every organisation
  3. Publish a privacy policy - so customers and employees know how you process their data
  4. Have a data breach procedure - so you can respond within 72 hours
  5. Conclude data processing agreements - with every party that processes data on your behalf

The difference is that you don’t need a formally appointed, independent officer. But someone has to do the work.

Practical: how to arrange this?

If you DO need a DPO:

  • Internal: appoint an employee with privacy law knowledge. Ensure they have sufficient time and budget
  • External: hire a DPO-as-a-service. Costs range from 500 to 2,000 euros per month
  • Register the DPO with the supervisory authority

If you DON’T need a DPO:

  • Designate someone internally as GDPR contact person
  • Ensure this person has basic GDPR knowledge
  • Document who it is and what their responsibilities are
  • Use a tool like GDPRWise to maintain records of processing activities and documentation
auto_awesome Automate your GDPR file?

GDPRWise helps you set up and maintain your records of processing activities, privacy policy, and GDPR documentation - without needing a DPO.

GW
GDPRWise Editorial

This article was written by the GDPRWise team and reviewed by our privacy experts. We regularly review our content for accuracy and legal correctness.