Electronic vs. handwritten signature: what does French law say?

Does the electronic signature have the same legal value as a handwritten signature? The question comes up again and again in law firms and corporate discussions. The short answer: yes, provided that certain technical and regulatory criteria are respected. The long answer – the one that must be mastered before signing a high-stakes contract – requires a detour through the Civil Code, the eIDAS regulation and some recent judgments. This complete guide takes stock in 2026.

The principle: article 1367 of the Civil Code

Since the law of March 13, 2000 (transposing directive 1999/93/EC), French law recognizes electronic signatures. Article 1367 of the Civil Code, amended by the order of February 10, 2016, provides: “The signature necessary for the completion of a legal act identifies its author. It expresses its consent to the obligations resulting from this act. When it is electronic, it consists of the use of a reliable identification process guaranteeing its link with the act to which it is attached. The reliability of this process is presumed, until proven otherwise, when the electronic signature is created, the identity of the signatory assured and the integrity of the act guaranteed, under conditions set by decree of the 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 proof

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

What it changes in practice

Concretely, in the event of a dispute: if you have an authentic handwritten signature, it is up to the person who disputes to prove that 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 substantial elements (timestamp, IP, metadata, behavior of the signatory). In all cases, the electronic signature is admissible.

Recent case law

Several recent judgments confirm the validity of electronic signatures in France. Cass. 1st civ. March 16, 2022 n°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. THIS Dec 9 2021 n°445019: the Council of State admits electronic signature for public procurement, in accordance with decree 2017-1416. The jurisprudential trend is clear: the correctly implemented AES electronic signature is enforceable in the same way as a handwritten signature.

Cases where the handwritten signature remains obligatory

Limiting exceptions (article 1175 of the Civil Code): private documents relating to family law (marriage contract, PACS - except recent dematerialized PACS), real and personal securities of a civil nature (guarantee by a natural person for a loan outside a professional framework), certain donations. And authentic acts (real estate sale, notarized donation) which require either physical presence at the notary, or a qualified signature at an equipped notary. The traditional handwritten signature also remains necessary for some social formalities (e.g. resignation in certain contexts).

The trap of the scanned signature

Warning: an image of a handwritten signature scanned then pasted on 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 an indicator, easily refutable. Many companies think they are in good standing because they have used this process for years without litigation — until one day a contract is challenged and the evidence collapses. See our dedicated article (/blog/signature-manuscrite-scannee-risks).

2026 recommendations by type of contract

CDI, CDD, amendments: AES minimum (OTP email + ideal SMS). 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 is enough. Lawyer’s act (66-3-3): Mandatory QES. Notarial deed: QES obligatory with an equipped notary. Certyneo offers SES and AES which cover 95% of a company's needs.

Conclusion: a legal equivalence, with technical nuances

The electronic signature has exactly the same legal value as the 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 at least 10 years. To learn more, see our complete eIDAS guide (/guide/eidas) or our article on eIDAS compliance for SMEs (/blog/conformite-eidas-pme-checklist).