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AI Act Due Diligence Checklist for Enterprise Buyers

Published 21 July 2026·Last updated 21 July 2026·7 min read
Author: ActBrief Editorial·Reviewer: Methodology pending external legal review

Not legal advice. This article is a preliminary technical guide for AI SaaS teams. Always confirm classification and obligations with qualified counsel. Effective dates reflect the Digital Omnibus updates as of July 2026.

Changelog
Updated 21 July 2026: Annex III standalone high-risk obligations deferred to 2 December 2027; Annex I embedded high-risk to 2 August 2028 (Council approval 29 June 2026). Art. 50 transparency remains 2 August 2026.

Why procurement cares now

Enterprise buyers increasingly attach AI governance questions to security reviews. Vendors that answer with marketing slides lose deals. Vendors that send an evidence pack move faster.

Buyer checklist (ask the vendor)

A. System inventory

  1. List AI features and intended purposes.
  2. Which decisions about people does AI influence?
  3. Is output automated, ranked, or assistive?

B. Role

  1. Are you provider, deployer, or both?
  2. Which GPAI / foundation models do you use?
  3. Who determines intended purpose — you or the customer?

C. Scope

  1. Is the system placed on the EU market or are outputs used in the EU?
  2. Where is the company established?

D. Transparency

  1. Show Art. 50 disclosure examples in product UX.
  2. Show privacy policy AI section.

E. Oversight & logging

  1. Human override process (SOP).
  2. Logging of AI-influenced decisions (especially if high-risk candidate).

F. Timeline awareness

  1. Which obligations do you treat as applicable from 2 August 2026 vs 2 December 2027?

What “good” looks like in a vendor response

If you are the vendor

Generate a free readiness brief before the questionnaire arrives. Pair it with:


Not legal advice. Procurement checklists support diligence; counsel confirms residual risk.

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