2 December 2026: the EU AI Act's other Article 50 deadline
Almost everything about Article 50 applies from 2 August 2026. There is exactly one exception, and it's easy to get wrong: the machine-readable marking duty in Article 50(2) — the requirement that AI-generated audio, image, video, and text be embedded with detectable provenance data like C2PA Content Credentials — is deferred, but only for generative AI systems that were already placed on the market or in service before 2 August 2026. For those systems, the marking obligation doesn't bite until 2 December 2026, per the Commission's 7 May 2026 provisional agreement.
Why this date exists
Retrofitting machine-readable provenance into an AI system that's already shipping — updating model output pipelines, coordinating with a growing web of downstream tools and integrations — is a real engineering lift, more so than switching on a chatbot disclosure banner. The Commission's compromise gives providers of systems already in the market a short runway specifically for that one duty, while holding the line on everything else. It's not a broader delay of Article 50, and treating it as one is the most common misreading floating around compliance commentary since the Digital Omnibus news cycle.
Who this actually affects
- Covered by the deferral: a generative image/video/audio/text system that was genuinely on the market before 2 August 2026 — its marking duty starts 2 December 2026 instead.
- NOT covered — applies 2 August 2026 regardless: any chatbot or AI system that interacts directly with people (Article 50(1)); deepfake and AI-generated-text-for-public-information labeling (Article 50(4)); any generative system launched fresh on or after 2 August 2026; a business simply using a generative tool rather than providing one, where the marking duty sits with the provider, not the deployer, either way.
What changes on the day itself
For providers of pre-August-2026 generative systems, 2 December 2026 is when the machine-readable marking duty simply starts applying to them the same way it already applies to anything launched after 2 August. There's no new mechanism, no new penalty tier — Article 50 breaches carry the same EU-wide exposure throughout: up to €15 million or 3% of worldwide annual turnover. Expect a second, smaller wave of compliance attention and search demand as the date approaches, echoing the run-up to August — worth planning content and outreach around if you're building in this space, the way the run-up to 2 August already has.
Common questions
Does the 2 December 2026 date mean Article 50 enforcement starts in December instead of August?
No. Article 50's chatbot disclosure duty (50(1)) and its deepfake/AI-text labeling duty (50(4)) both apply from 2 August 2026, no exceptions. The only thing that moves to 2 December is the machine-readable marking duty (50(2)), and only for generative systems that were already on the market before August.
We're a business that uses AI image/video tools, not a company that builds them — does this date matter to us?
Only indirectly. The marking duty in Article 50(2) sits with the provider of the generative system, not with a business using it to publish content. What matters to you either way is whether the tool you use marks its output — see our per-generator guides — and whether you're applying visible AI-content labels under Article 50(4), which was never part of this deferral.
How did 'the AI Act is delayed' become such a common misreading of this?
The Digital Omnibus simplification package pushed the high-risk AI regime's deadlines out to 2027-2028, and a lot of coverage compressed that into a general 'AI Act delayed' headline. Article 50 was deliberately left alone in that package, with only the narrow 50(2) pre-existing-system carve-out described here. If your compliance plan is waiting on a broader delay, it's waiting on the wrong article.
What counts as a generative system 'already on the market' before 2 August 2026 versus a new one?
The Commission's own detailed criteria for this line weren't fully settled as of this review — a system substantially updated or re-launched close to the date could reasonably fall into either bucket depending on how significant the change was. If you provide a generative AI system and the timing is close, treat 2 August as your target rather than assuming the December date covers you.
Is there a specific fine tier for missing the 2 December marking deadline, separate from the general Article 50 penalties?
No separate tier — a missed 50(2) marking duty falls under the same EU-wide Article 50 penalty framework as any other breach: fines of up to €15 million or 3% of worldwide annual turnover, whichever is higher.
Don't wait for either deadline to find out where you stand.
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