Electronic signature vs handwritten: what does French law say?

Does electronic signature have the same legal value as a handwritten signature? The question keeps coming up 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 court rulings. This comprehensive guide takes stock 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 signature. Article 1367 of the Civil Code, as amended by the Ordinance of 10 February 2016, states: "A signature necessary for the perfection of a legal act identifies its author. It manifests his consent to the obligations arising from that act. When it is electronic, it consists in the use of a reliable method of identification guaranteeing its link with the act to which it is attached. The reliability of this method is presumed, unless proved otherwise, when the electronic signature is created, the identity of the signatory is ensured and the integrity of the act is guaranteed, under conditions fixed by decree in the State Council." This text is fundamental: it puts electronic and handwritten signature on an equal legal footing.

The 3 eIDAS levels: a hierarchy of evidence

The eIDAS European 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 grounds 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 his identification, created with means under his exclusive control. Qualified electronic signature (QES): Article 25.2 — presumed equivalent to handwritten signature, only QES benefits from this legal presumption.

What this means in practice

Concretely, in the event of a dispute: if you have an authentic handwritten signature, it is up to the person who contests it to prove it is false. If you have a qualified electronic signature (QES), same rule (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 substantive evidence (time stamp, IP, metadata, signatory behaviour). In all cases, the electronic signature is admissible.

Recent case law

Several recent court rulings confirm the validity of electronic signature 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 evidence of identification. CE 9 December 2021 No. 445019: the State Council accepts electronic signature for public procurement, in accordance with Decree 2017-1416. The case law trend is clear: AES electronic signature correctly implemented is enforceable in the same way as a handwritten signature.

Cases where handwritten signature remains mandatory

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

The pitfall of scanned signature

Warning: an image of a handwritten signature scanned and then pasted onto 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 compliant because they have been using this method for years without dispute — until the day a contract is challenged and the evidence collapses. See our dedicated article (/blog/signature-manuscrite-scannee-risques).

Recommendations 2026 by contract type

Permanent contract, fixed-term contract, amendments: AES minimum (email OTP + SMS 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. Quote, purchase order, invoice: SES sufficient. Lawyer's deed (66-3-3): QES mandatory. Notarial deed: QES mandatory with an equipped notary. Certyneo offers SES and AES which 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 method". 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 comprehensive eIDAS guide (/guide/eidas) or our article on eIDAS compliance for SMEs (/blog/conformite-eidas-pme-checklist).