Supervisory authority

Data protection glossary · 1 minute read

The data protection supervisory authority monitors compliance with data protection law and can carry out audits and impose fines.

Competence in Germany

In Germany, data protection is a matter for the federal states: as a rule, the authority of the state in which the company has its registered office is competent. The data protection officer is its first point of contact.

The Federal Commissioner for Data Protection and Freedom of Information (BfDI) is responsible for federal authorities and for telecommunications and postal services. In Bavaria, the Bavarian State Office for Data Protection Supervision (BayLDA) supervises the private sector.

Tasks and powers

The supervisory authorities provide advice, handle complaints, carry out investigations and receive data breach notifications. They can request information, restrict or prohibit processing and impose administrative fines.

For cross-border processing, a lead authority coordinates the procedure with the other authorities concerned (one-stop shop).

Arts. 51 to 59 GDPR
Independence, competence, tasks and powers of the supervisory authorities.
Art. 56 GDPR
Competence of the lead supervisory authority.
Art. 77 GDPR
Every data subject's right to lodge a complaint.
Section 40 BDSG
State supervisory authorities for private bodies.

Last updated: September 2026

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