Legal validity · European Union
Are electronic signatures legal in the EU?
Yes. Electronic signatures are legally valid and enforceable across all 27 EU member states under the eIDAS Regulation (EU) No 910/2014 — a single, directly-applicable EU law. This guide explains the three eIDAS signature tiers in plain English, where a Simple Electronic Signature is sufficient, and which documents may call for more.
The law that governs e-signatures in the EU
The EU framework is the eIDAS Regulation (EU) No 910/2014 (electronic IDentification, Authentication and trust Services), which has applied directly in every member state since 1 July 2016. Because it is a regulation rather than a directive, the same baseline rules apply EU-wide without needing national transposition. It was updated in 2024 by Regulation (EU) 2024/1183 (“eIDAS 2.0”), which introduced the European Digital Identity Wallet but did not change the validity or legal effect of existing electronic signatures.
eIDAS defines three tiers of electronic signature:
- Simple Electronic Signature (SES) — The baseline — e.g. drawing a signature or clicking to agree, backed by an audit trail. Valid for the vast majority of everyday commercial agreements. This is what SignLab provides.
- Advanced Electronic Signature (AES) — Uniquely linked to and capable of identifying the signer, with tamper-evidence. Used for higher-value or higher-risk contracts.
- Qualified Electronic Signature (QES) — An AES created with a qualified certificate from a Qualified Trust Service Provider. By law it carries the same legal effect as a handwritten signature across the entire EU.
Critically, Article 25 of eIDAS states that an electronic signature “shall not be denied legal effect and admissibility as evidence in legal proceedings solely on the grounds that it is in electronic form or that it does not meet the requirements for qualified electronic signatures.” In other words, a Simple Electronic Signature is admissible and enforceable for most commercial purposes.
What makes an e-signature enforceable
Beyond the eIDAS tiers, courts across the EU look for the same core elements:
Intent to sign
The signer clearly intends to sign. SignLab requires each signer to actively draw or confirm a signature and click to agree.
Consent to transact electronically
All parties agree to do business electronically. SignLab’s signing flow includes a clear disclosure the signer must accept.
Reliable link to the document
The signature is bound to the document and tamper-evident. SignLab cryptographically seals every signed PDF and embeds the audit trail.
When a Simple Electronic Signature may not be enough
eIDAS sets the EU-wide baseline, but individual member states can impose extra formalities for specific document types under their national law. A QES, a notary, or wet ink may be required for:
- Transactions that must be notarised under national law (e.g. certain real-estate transfers and company deeds)
- Wills and many succession/inheritance documents
- Certain family-law and personal-status matters
- Some consumer or employment documents in specific member states (national rules vary)
- Specific regulated financial instruments that mandate AES or QES
Requirements differ by member state. If you are unsure whether a Simple Electronic Signature is valid for your document, consult a lawyer in the relevant EU country.
How SignLab meets the law’s requirements
Every document signed through SignLab carries the evidence needed to stand behind a signature:
- A tamper-evident PDF sealed with a SHA-256 hash, so any later change is detectable
- A full audit trail — sent, viewed and signed events, each with a UTC timestamp
- IP address and device captured at every event, plus approximate signer geolocation
- A QR code on every signed PDF linking to a public verification page
- A Certificate of Completion you can download and share with counterparties
Send a legally valid document in the EU
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