AIRiskAware
AI Governance Glossary
Governance Concept

What Is Legitimate Interest?

Legitimate Interest is a legal basis under the GDPR permitting the processing of personal data where it is necessary for interests pursued by the controller or a third party, provided those interests are not overridden by the individual's rights and freedoms.

Definition

Legitimate Interest, a legal basis under the GDPR permitting the processing of personal data where it is necessary for interests pursued by the controller or a third party, provided those interests are not overridden by the individual's rights and freedoms.

Legitimate interest is the most flexible of the GDPR's six lawful bases, but it requires a documented three-part balancing test (purpose, necessity, and balancing against the individual's rights). It is frequently relied on for AI model training, but regulators expect a genuine assessment and an easy way for people to object. Public authorities cannot use it for their core tasks.

Source: GDPR (Regulation (EU) 2016/679), Article 6(1)(f)

Plain-language explanation

Legitimate interest is the most flexible of the GDPR's six lawful bases, but it requires a documented three-part balancing test (purpose, necessity, and balancing against the individual's rights). It is frequently relied on for AI model training, but regulators expect a genuine assessment and an easy way for people to object. Public authorities cannot use it for their core tasks.

Primary source: GDPR (Regulation (EU) 2016/679), Article 6(1)(f)

Related terms

Purpose Limitation Data Controller Data Minimisation Data Subject Rights

See where you stand on AI governance

Take the free 7-question maturity assessment and get a personalised action plan.

Free assessment, 3 minutes →