AI Governance & Regulation: EU AI Act, NIST AI RMF and ISO/IEC 42001EU AI Act deep dive · Lesson 7 of 17

Timeline, enforcement and the 2026 Digital Omnibus

Article · 13 min · 8 min lecture

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Timeline, enforcement and the 2026 Digital Omnibus

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Chapter 1 of 13

Timeline, enforcement, Omnibus

  • Full timeline as of Sept 2026
  • What the Omnibus changed
  • Penalties and enforcers
  • Your compliance calendar

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Chapters

Why dates matter

The AI Act applies in stages, and the 2026 Digital Omnibus on AI changed several of them. Getting the dates wrong leads either to panic (spending on controls not yet needed) or complacency (missing duties already in force). Always confirm against the consolidated text on EUR-Lex and Commission guidance; this lesson reflects the position as of September 2026.

The consolidated timeline

DateWhat applies
1 August 2024AI Act (Regulation (EU) 2024/1689) enters into force
2 February 2025Prohibited practices (Article 5); AI literacy (Article 4); general provisions and definitions
2 August 2025GPAI model obligations; governance structures (AI Office, AI Board); national authorities to be designated; penalties framework; notified-body rules
2 August 2026General date of application: Article 50 transparency duties; Commission enforcement powers over GPAI providers; most remaining provisions
27 July 2026Digital Omnibus on AI (Regulation (EU) 2026/1744) enters into force, amending the Act
2 December 2026End of Article 50(2) marking grace period for generative systems placed on the market before 2 August 2026; new prohibition on AI nudification/CSAM systems applies
2 August 2027GPAI models placed on the market before 2 August 2025 must comply
2 December 2027High-risk obligations for Annex III systems (after the Omnibus)
2 August 2028High-risk obligations for Annex I product-embedded systems (after the Omnibus)

What the Digital Omnibus on AI changed (headline level)

The European Commission proposed the "Digital Omnibus" simplification package in November 2025. Parliament and Council reached political agreement on the AI part on 7 May 2026; Parliament approved it in June, the Council adopted it on 29 June 2026, it was published in the Official Journal on 24 July 2026 and entered into force on 27 July 2026. Headline changes include:

  • Postponed high-risk deadlines (Annex III to 2 December 2027; Annex I to 2 August 2028), mainly because harmonized standards were not ready.
  • Rewritten AI literacy duty (support the development of AI literacy, no guaranteed individual level) with support from the Commission and Member States, especially for SMEs.
  • A four-month grace period for Article 50(2) marking for existing generative systems.
  • A new prohibition targeting AI systems for creating non-consensual intimate imagery and CSAM, from 2 December 2026.
  • Simplifications and support for smaller companies, including measures for SMEs and small mid-caps, expanded testing and sandbox opportunities, and clarifications on the AI Office's supervisory role.

The detail of each change matters for anyone near the lines. Read a reputable consolidated version, not a summary.

Penalties (Article 99 and 101)

InfringementMaximum fine
Prohibited practicesEUR 35 million or 7% of total worldwide annual turnover, whichever is higher
Most other obligations (operators, notified bodies, Article 50)EUR 15 million or 3%, whichever is higher
Supplying incorrect, incomplete or misleading information to authoritiesEUR 7.5 million or 1%, whichever is higher
GPAI model providers (imposed by the Commission)EUR 15 million or 3%, whichever is higher

For SMEs, including start-ups, each cap is the lower of the two amounts. Member States set the detailed rules for penalties on AI systems.

Who enforces what

  • National market surveillance authorities: AI systems, including high-risk and Article 50 duties. Each Member State designates its own (for example, some chose existing digital, telecoms or data protection regulators).
  • The AI Office: GPAI models, and systems built on GPAI models by the same provider in certain cases.
  • Data protection authorities: GDPR and, in some Member States, certain AI Act areas involving biometrics or law enforcement.
  • Sector regulators (financial, medical devices) where AI sits inside their products.

Planning with a roadmap

A sensible SME roadmap as of September 2026:

Now (Q4 2026)2027By Q4 2027
Inventory and classification complete; Article 5 screen; literacy program running; Article 50 disclosures live; asset register; vendor due diligence on GPAI documentationPolicy and management system maturing (ISO/IEC 42001-aligned); monitoring and incident process tested; FRIA/DPIA templates readyAny Annex III system you deploy meets deployer duties from 2 December 2027; contracts updated; oversight staff trained

Hands-on: a dated compliance calendar

date,obligation,owner,status,evidence_link
2025-02-02,Article 5 screen of inventory,AI lead,done,/gov/inventory-v3.xlsx
2025-02-02,AI literacy program v1,People ops,done,/gov/literacy/
2026-08-02,Chatbot and voice agent disclosures live,Marketing ops,done,/gov/tests/disclosure-aug26.pdf
2026-08-02,Deepfake labeling rule in content SOP,Head of content,done,/gov/sop/content-v5.pdf
2026-12-02,Confirm vendors mark generative outputs (50(2)),AI lead,in progress,
2027-06-30,High-risk deployer readiness review (HR tool),HR director,planned,
2027-12-02,Annex III deployer duties apply,HR director,planned,

Pitfalls

  • Quoting the original 2 August 2026 high-risk date in client proposals after the Omnibus changed it.
  • Assuming "postponed" means "canceled".
  • Confusing entry into force (when a law exists) with application (when duties bite).

Key takeaways

  • Key dates: 2 Feb 2025 (bans, literacy), 2 Aug 2025 (GPAI), 2 Aug 2026 (general application, Article 50), 2 Dec 2026 (marking grace ends, new ban), 2 Dec 2027 (Annex III), 2 Aug 2028 (Annex I).
  • The Digital Omnibus on AI (Regulation (EU) 2026/1744) entered into force on 27 July 2026; it deferred, not canceled, high-risk duties.
  • Fines reach EUR 35m/7% for bans, EUR 15m/3% for most duties, EUR 7.5m/1% for misleading information; SMEs face the lower cap.
  • National authorities enforce AI system rules, the AI Office enforces GPAI rules, and GDPR enforcement continues in parallel.

Check your understanding

Quick questions to lock in the lesson. They don’t count towards your certificate.

  1. A proposal written in October 2026 says high-risk HR AI rules 'apply from 2 August 2026'. What is wrong?
  2. For a small start-up breaching Article 50, which cap logic applies?
  3. Which body primarily supervises GPAI model providers?

Put it into practice

Copy the CSV compliance calendar, adapt the rows to your inventory, assign owners and evidence links, and add the next three dates to your team calendar.

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