Caesar AI Atlas
Legal Roles • Intermediate

Notified Body vs Notifying Authority

A side-by-side comparison of Notified Body and Notifying Authority. Understand who assesses regulated systems and who designates and monitors the assessment bodies.

Quick Verdict: Use Notified Body for the conformity assessment organization; use Notifying Authority for the national authority that designates and supervises those bodies.

At a Glance

Notified Body

Notified Body defines conformity assessment body formally designated under EU law to assess whether certain products or systems meet applicable requirements.

Key Characteristics
  • • Conformity assessment body
  • • Formally designated under EU law
  • • May assess regulated AI systems against applicable requirements
Watch Out For
  • • Not the same as the national authority that designates it
  • • Its role depends on the applicable conformity assessment procedure

Context: Most relevant when a regulated AI system may require third-party conformity assessment.

VS
Notifying Authority

Notifying Authority defines national authority responsible for assessing, designating, notifying, and monitoring conformity assessment bodies.

Key Characteristics
  • • National authority
  • • Assesses and designates conformity assessment bodies
  • • Monitors continued competence and supervision
Watch Out For
  • • Does not normally perform the same assessment role as the notified body
  • • Should not be treated as the provider’s technical assessor

Context: Most relevant when mapping the regulatory oversight chain for conformity assessment bodies.

Key Differences

AspectNotified BodyNotifying Authority
Legal roleA notified body is the designated conformity assessment body that may assess products or AI systems.A notifying authority is the national authority responsible for assessing, designating, notifying, and monitoring those bodies.
Lifecycle positionIt appears at the point where a regulated system needs conformity assessment.It operates one level above, supervising the availability and competence of conformity assessment bodies.
Main obligationsIts core function is to assess whether applicable requirements are met.Its core function is to ensure conformity assessment bodies remain competent and properly supervised.
Documentation dutiesDocumentation relates to assessment procedures, findings, and conformity evidence.Documentation relates to designation, notification, monitoring, and supervisory records.
Common mistakeTreating the notified body as the public regulator for all AI Act obligations.Treating the notifying authority as the organization that directly certifies a provider’s AI system.
Caesar AI Note

In practice, confusing these roles creates poor audit trails. A clean regulatory map should show provider, notified body, notifying authority, and national competent authority as separate nodes.

Notes

Common Mistakes

1

Using notified body and notifying authority interchangeably.

2

Assuming the notifying authority performs every conformity assessment.

3

Failing to identify whether third-party assessment is required for the specific AI system.

4

Omitting the oversight chain from governance documentation.

When to Use Each

notified-body

Use Notified Body when describing an organization formally designated to perform conformity assessment. It is the correct term when the question is who assesses a regulated AI system against applicable requirements.

notifying-authority

Use Notifying Authority when describing the national authority that designates and monitors conformity assessment bodies. It is the correct term when the question is who supervises the competence of notified bodies.

Compliance Note

EU AI Act responsibility mapping should distinguish the assessor from the authority supervising assessors. This helps contracts, audit checklists, and conformity documentation assign the right evidence to the right actor.

FAQ

Does a notifying authority assess an AI system directly?+

The term refers to the authority that assesses, designates, notifies, and monitors conformity assessment bodies. The notified body is the entity that may participate in the system-level conformity assessment procedure.

Why is the distinction important in contracts?+

Contracts and procurement records need to identify who provides assessment services and who is part of public oversight. Mixing the roles can create unclear accountability.

Is every AI system reviewed by a notified body?+

No. The need for notified body involvement depends on the applicable EU AI Act classification and conformity assessment route.

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