Electronic vs handwritten signature: what does French law say?

Does an electronic signature have the same legal value as a handwritten signature? The question comes up repeatedly in law firms and business discussions. The short answer: yes, provided certain technical and regulatory criteria are met. The long answer — the one you need to master before signing a high-stakes contract — requires a detour through the Civil Code, the eIDAS regulation and a few recent rulings. This comprehensive guide sets out the facts in 2026.

The principle: Article 1367 of the Civil Code

Since the Law of 13 March 2000 (transposing Directive 1999/93/EC), French law recognises electronic signatures. Article 1367 of the Civil Code, amended by the Ordinance of 10 February 2016, states: "A signature necessary for the completion of a legal act identifies its author. It manifests their consent to the obligations arising from that act. When it is electronic, it consists in the use of a reliable identification process guaranteeing its link with the act to which it attaches. The reliability of this process is presumed, until proof to the contrary, when the electronic signature is created, the identity of the signatory assured and the integrity of the act guaranteed, under conditions set by decree in Council of State." This text is fundamental: it puts electronic and handwritten signatures on an equal legal footing.

The 3 eIDAS levels: a hierarchy of evidence

The European eIDAS regulation (EU 910/2014) defines three levels of electronic signature. Simple electronic signature (SES): Article 25.1 — cannot be refused in court solely on the ground that it is electronic, but the burden of proving reliability falls on the person relying on it. Advanced electronic signature (AES): Article 26 — linked uniquely to the signatory, allows their identification, created with means under their exclusive control. Qualified electronic signature (QES): Article 25.2 — presumed equivalent to a handwritten signature, only QES benefits from this legal presumption.

What this means in practice

In practical terms, in the event of a dispute: if you have an authentic handwritten signature, it is up to the person contesting it to prove it is false. If you have a qualified electronic signature (QES), the same rule applies (presumption of reliability). If you have an AES, the judge will examine the technical evidence provided (certificate, audit trail, OTP). If you have an SES, you will need to produce more substantial evidence (timestamping, IP, metadata, signatory behaviour). In all cases, the electronic signature is admissible.

Recent case law

Several recent court rulings confirm the validity of electronic signatures in France. Cass. 1st civ. 16 March 2022 No. 20-21.585: the Court of Cassation validates a contract signed electronically via a SaaS platform at AES level, considering that the audit trail provided sufficient proof of identification. CE 9 Dec. 2021 No. 445019: the State Council accepts electronic signatures for public procurement, in accordance with Decree 2017-1416. The case law trend is clear: properly implemented AES electronic signatures are enforceable in the same way as handwritten signatures.

Cases where handwritten signature remains mandatory

Limited exceptions (Article 1175 of the Civil Code): private deeds relating to family law (marriage contract, civil partnership — except recent dematerialised civil partnerships), real and personal securities of a civil nature (personal guarantee for a loan outside a professional framework), certain gifts. And authentic deeds (property sale, notarial gift) which require either physical presence with a notary or a qualified signature with an equipped notary. Traditional handwritten signature also remains necessary for a few social formalities (e.g. resignation in certain contexts).

The pitfall of scanned signatures

Beware: an image of a handwritten signature scanned and then pasted into a PDF is NOT an electronic signature within the meaning of eIDAS. It offers no guarantee of identification or integrity. Legally, it is at best considered as evidence, easily refutable. Many companies think they are in compliance because they have used this process for years without litigation — until the day a contract is contested and the evidence collapses. See our dedicated article (/blog/signature-manuscrite-scannee-risques).

Recommendations 2026 by contract type

Employment contract, fixed-term contract, amendments: AES minimum (email + SMS OTP ideal). Residential lease, commercial lease: AES recommended, QES for very large commercial leases. NDA, confidentiality agreement: SES acceptable for a standard NDA, AES for highly sensitive information. Quotation, order, invoice: SES sufficient. Legal deed (66-3-3): QES mandatory. Notarial deed: QES mandatory with an equipped notary. Certyneo offers SES and AES that cover 95% of a company's needs.

Conclusion: legal equivalence, with technical nuances

Electronic signature has exactly the same legal value as handwritten signature — provided it is properly implemented. The key word: "reliable process". For a high-stakes contract, do not skimp on the level (AES rather than SES), use an eIDAS-compliant platform, and keep the audit trail for a minimum of 10 years. To find out more, consult our complete eIDAS guide (/guide/eidas) or our article on eIDAS compliance for SMEs (/blog/conformite-eidas-pme-checklist).