DPIA meaning explained
A DPIA is a GDPR Article 35 risk assessment for personal data processing likely to cause high risk to individuals, done before processing starts.
Data Protection Impact Assessment (DPIA)
A Data Protection Impact Assessment (DPIA) is a privacy risk assessment required under the General Data Protection Regulation (GDPR) when personal data processing is likely to result in high risk to individuals. It documents what data is being processed, why it's being processed, the potential risks, and the safeguards in place before processing begins.
Organizations use a DPIA to identify and reduce privacy risks early, rather than discovering them after a system is already live. DPIAs are commonly associated with activities such as large-scale monitoring, profiling, processing sensitive data, and using new technologies.
Key facts about Data Protection Impact Assessment (DPIA)
Full name | Data Protection Impact Assessment (DPIA) |
Legal basis | GDPR Article 35 |
Who is responsible | The data controller, with advice from the Data Protection Officer (DPO) where one is appointed |
When it's required | Before processing that's likely to result in high risk to individuals |
Related term | Privacy Impact Assessment (PIA) |
What does a DPIA assess?
At a high level, a DPIA looks at a planned data processing activity, the privacy risks it may create, and the measures used to reduce those risks. Under GDPR, this assessment takes place before high-risk processing begins.
When might a DPIA be required?
A DPIA may be required when personal data processing is likely to create a high risk to individuals, such as certain types of large-scale monitoring, profiling, sensitive data processing, or the use of new technologies.
For the specific criteria, worked examples, and a practical way to check whether your own project needs one, see Clym's guide to when a DPIA is required and how to conduct one.
DPIA vs. Privacy Impact Assessment (PIA): what's the difference?
The two terms are often used loosely, but they aren't identical.
Aspect | DPIA | PIA |
|---|---|---|
Legal basis | Defined under GDPR Article 35 | Not tied to one specific law; used across multiple frameworks |
Where it applies | EU/UK, and any organization processing EU or UK residents' data | Broadly used in the US, Canada, Australia, and elsewhere |
Trigger | Required specifically for high-risk processing under GDPR's criteria | Often used more broadly, including on a precautionary basis |
Oversight | Enforced by EU/UK data protection authorities | Enforcement, if any, depends on the applicable jurisdiction's law |
Relationship | A DPIA is a defined type of PIA | PIA is the broader umbrella term |
In simple terms, a DPIA is a specific type of privacy impact assessment defined under GDPR, while PIA is a broader term used across different privacy frameworks.
Why are DPIAs important?
DPIAs help organizations identify privacy risks before high-risk processing begins. They also document how those risks were assessed and what measures were considered to reduce them, supporting GDPR's broader data protection by design approach.
Does every processing activity need a DPIA?
No. A DPIA is only required for processing that's likely to result in high risk to individuals, not for every use of personal data. Routine processing, like maintaining a customer's contact details for billing, doesn't trigger the requirement on its own.
Related terms
Privacy Impact Assessment (PIA): A broader, jurisdiction-agnostic risk assessment for data processing activities.
Data Protection Officer (DPO): The person responsible for overseeing an organization's data protection strategy, including DPIAs.
Data protection: The set of legal and technical practices that safeguard personal data from misuse.
Data privacy: An individual's right to control how their personal information is collected and used.
Personal data: Any information relating to an identified or identifiable individual.
Data governance: The overall framework an organization uses to manage the availability, integrity, and security of its data.
Frequently asked questions about Data Protection Impact Assessment (DPIA)
DPIA stands for Data Protection Impact Assessment, the GDPR-defined process for evaluating high-risk personal data processing before it begins.
A DPIA is the specific process GDPR requires. A Privacy Impact Assessment (PIA) is a broader term used across other jurisdictions for a similar exercise. See the comparison above for the full distinction.
GDPR Article 35 is the legal basis for Data Protection Impact Assessments and sets out when a DPIA is required for high-risk processing.
The data controller is responsible for carrying out a DPIA, with advice from the Data Protection Officer (DPO) where one is appointed.
Adam is the Head of Digital Marketing at Clym, where he leverages his diverse expertise in marketing to support businesses with their compliance needs and drive awareness about data privacy and web accessibility. As one of the company’s original team members, Adam has been instrumental in shaping its journey from the very beginning. When he’s not diving into marketing strategies, Adam can be found cheering on his favorite sports teams or enjoying fishing.