When does the EU AI Act come into force for high-risk AI systems?

The EU AI Act rolled out in phases. Prohibited AI practices (social scoring, manipulative AI) are already banned. Transparency requirements for general-purpose AI models took effect in August 2025. The big enforcement date is August 2, 2026, when the rules for high-risk AI systems kick in.

High-risk AI includes any system that makes or substantially influences decisions about: credit and lending, employment and recruitment, healthcare treatment, law enforcement, essential public services, and education. If your AI system touches any of these categories, you need to be compliant by August 2026.

What compliance looks like in practice: every high-risk AI decision must be logged with full data lineage. The system must be explainable: you need to be able to tell an affected individual why the AI made the decision it made. Human oversight must be built in. Risk management must be documented. And the system must be registered in the EU AI database.

The companies that start governance work now have time to build it correctly. The companies that wait until Q2 2026 will be scrambling, cutting corners, and hoping the regulators start slow. That is not a strategy. SynthesisArc's Claude Guard produces the documentation, audit trails, and governance controls the Act requires.