FAQEU

EU eIDAS FAQ

Clear answers to common eIDAS questions with practical next steps.

Use this page to choose the right subpage for deep implementation guidance.

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Author

Sorena AI

Published

Feb 21, 2026

Updated

Feb 21, 2026

Questions

Structured answer sets in this page tree.

Primary sources

Cited legal and guidance references.

Publication metadata

Sorena AI

Published Feb 21, 2026

Updated Feb 21, 2026

Overview

This FAQ is built for implementation teams. Answers focus on what to do next: what to build, what to decide, what to test, and what evidence to retain. For formal interpretation, validate against the primary legal texts, implementing acts, and competent-authority guidance.

Question 1

What does eIDAS cover?

eIDAS establishes the EU framework for electronic identification and trust services for electronic transactions in the internal market.

After the 2024 amendment, that now includes not only signatures, seals, timestamps, delivery services, and website authentication, but also electronic archiving, electronic attestations of attributes, electronic ledgers, and the EUDI Wallet framework.

Start with /artifacts/eu/electronic-identification-and-trust-services-regulation/what-eidas-covers for the role map and expanded scope.
If you sign or validate, use the electronic signatures guide and certificate validation blueprint.

Question 2

Do we need a qualified electronic signature (QES)?

The right level depends on legal requirements and risk. Many use cases can use advanced electronic signatures, but some require (or strongly benefit from) qualified signatures.

The operational difference is mostly evidence and ecosystem: qualified services often imply QTSP dependencies and stricter supervision posture.

Decide by journey: onboarding vs high-risk contract signing vs internal approvals.
Treat the decision as an architecture decision with explicit acceptance criteria and evidence requirements.

Question 3

How do we select a QTSP?

QTSP selection should be evidence-first: qualification proof, security controls, supervision evidence, interoperability tests, and exit readiness.

Avoid "marketing qualification" and verify scope for the exact service you plan to use.

Use the QTSP selection guide for due-diligence questions, trust-list checks, and evidence request lists.
Check whether the provider must evidence updated Article 24 identity-proofing conformity by 21 May 2026 if it was qualified before 20 May 2024.

Question 4

What evidence do auditors and supervisors ask for first?

Most audits start with operational proof: validation reports, decision logs, revocation/status handling, and vendor evidence for qualified services.

Build an evidence index: requirements -> controls -> tests -> living artifacts.

Relying party: deterministic validation pipeline + logs + negative test results.
Vendor program: QTSP audit reports/conformity evidence + incident procedures + exit plan.
Wallet readiness: verifier logs + attribute governance + interoperability test evidence.

Question 5

What is EUDI Wallet readiness in practice?

EUDI Wallet readiness means building wallet-compatible authentication and attribute-verification flows, with privacy-by-design and user-transparency controls.

It also means planning against the real timeline: late-2024 wallet implementing regulations, current ARF assumptions, and Member State wallet availability by the end of 2026.

Start with the wallet readiness page, then use the technical architecture guide for component planning.
Prioritize interoperability, negative testing, and evidence design early to avoid late-stage integration failures.

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