Electronic signature for notaries: complete guide 2026

The French notarial profession is undergoing an unprecedented digital transformation. Since the ordinance n°2005-759 of 4 July 2005 and its successive implementing decrees, electronic signature has progressively become an indispensable tool in notarial offices. In 2026, virtually all electronic authentic acts (AAE) are signed remotely, considerably reducing delays and logistical constraints for the parties. This article explains precisely how to use electronic signature at French notaries: which documents are concerned, which signature levels apply, how the procedure unfolds in practice and which tools to choose to remain in compliance with the eIDAS regulation and notarial rules.

The specific framework for notarial electronic signature

The notarial profession does not merely apply the general law of electronic signature. It benefits from a derogatory and reinforced framework, stemming from several foundational texts that confer upon the electronic authentic act (AAE) the same probative force as a paper authentic act.

The electronic authentic act (AAE): definition and scope

The AAE is defined by decree n°2005-973 of 10 August 2005, amended by decree n°2020-395 of 3 April 2020 which generalised the possibility of remote appearance. An electronic authentic act presents the same characteristics as a paper act: it is received by a competent public officer, it is conclusive unless forgery is proven and it is enforceable as of right.

For an AAE to be valid, three cumulative conditions must be met:

• The notary must use a qualified electronic signature (QES) within the meaning of the eIDAS regulation, the highest level in the European hierarchy;
• The act must be preserved in an electronic central registry, managed by the Caisse des dépôts et consignations on behalf of the Conseil supérieur du notariat (CSN);
• The appearance of the parties may be physical or, since 2020, entirely remote via a secure electronic remote appearance (ARDI system).

Tools approved by the Conseil supérieur du notariat

The CSN plays a central role in the digital governance of the profession. It has developed and approved several specific tools:

• Real.not: the signature platform and management of electronic authentic acts, integrated into the software environment of notarial offices;
• Réseau Privé Virtuel des Notaires (RPVN): the secure infrastructure through which all acts and sensitive exchanges transit;
• ARDI (Acte Reçu à Distance par Immersion): the secure videoconference remote appearance system, generalised since the 2020 decree.

It is important to understand that notaries cannot use any commercial electronic signature solution to sign AAEs. Only tools approved by the CSN, based on qualified certificates issued by a qualified trust service provider (QTSP) referenced by ANSSI, are admissible for authentic acts.

The different types of documents and applicable signature levels

Not all signatures made in a notarial office require the same level of security. The distinction between authentic acts and acts under private deed is fundamental.

Electronic authentic acts: mandatory qualified signature

For AAEs — property sales, donations, notarised wills, marriage contracts, mortgage loans — qualified electronic signature (QES) is mandatory. This signature is based on:

• A qualified certificate issued after identity verification face-to-face (or by video compliant with ETSI EN 319 401 standard);
• A qualified signature creation device (QSCD), generally a cryptographic USB key or cloud HSM module;
• Qualified timestamping guaranteeing the signature's certain date.

The notary holds a qualified professional certificate, issued by the CSN's trust provider. The associated private key can never leave the secure device, which guarantees the integrity of the act.

Acts under private deed countersigned by notary

Certain acts, such as sales agreements, mandates or countersigned commercial leases, may resort to an advanced electronic signature (AES), an intermediate level of the eIDAS regulation. In this case, the parties may sign from their secure personal space, via a link sent by email, after identity verification by SMS OTP or by a documentary verification process (IDnow, Ubble, etc.).

This flexibility allows the notary to offer a fully dematerialised customer journey for acts not requiring the qualified level. The probative value is lower than an AAE, but remains higher than a scanned handwritten signature.

Internal documents and routine management acts

For correspondence, simple powers of attorney, fee agreements or engagement letters, a simple electronic signature (SES) or advanced signature is generally sufficient. SaaS solutions compliant with eIDAS — such as Certyneo, specialising in electronic signature for legal firms — allow automation of these signature flows without recourse to the CSN's heavy infrastructure.

How electronic signature actually unfolds at the notary's office

Step 1: document preparation and identity verification

Before any signature, the notary is required to verify the identity of the parties. Within the framework of a remote appearance via ARDI, this verification takes place via secure videoconference. The notary verifies identity documents presented on camera in real time and interrogates FICOBA, FICOVIE or FNIDL files depending on the nature of the act. This step is non-negotiable: the notary assumes personal responsibility for the identity of those appearing.

Step 2: reading and validating the document

In accordance with article 23 of the decree of 26 November 1971 (amended), the notary must read the act to the parties, even remotely. In the electronic context, this reading may take place via screen sharing during the ARDI session. Each party has secure access to the document to consult it before signature.

Step 3: multiparty signature and archival

Once the act is read and approved, each party signs in the order defined by the notary. The notary affixes his qualified signature last, which confers authentic character upon the act. The act is then automatically transmitted to the central electronic registry (MCE) managed by the Caisse des dépôts. An electronically enforceable copy may be delivered instantaneously to the parties concerned.

The entire process, from notification to delivery of copies, may now be completed in less than 48 hours for simple acts, compared to one to three weeks in traditional paper format. For offices wishing to optimise their signature flows for non-authentic acts, tools such as Certyneo's ROI calculator allow precise evaluation of productivity gains.

Measurable benefits for notarial offices

Reduction of delays and productivity gains

The generalisation of AAEs has enabled a significant reduction in processing times. According to data published by the Conseil supérieur du notariat in its 2024 annual report, more than 85% of property sales now incorporate at least one dematerialised step, and 60% take place entirely remotely. For an office handling 300 acts per year, the transition to all-electronic represents estimated savings of between 15 and 25% of administrative time, equivalent to 0.5 to 1 FTE that can be reassigned to higher-value tasks.

Enhanced security and complete traceability

Unlike the paper act, the AAE benefits from total traceability: each action is timestamped, logged and verifiable. The central electronic registry guarantees document integrity for unlimited duration, without risk of loss, deterioration or falsification. The audit log associated with each act constitutes irrefutable proof in the event of dispute.

Geographical accessibility and party inclusion

Remote appearance has profoundly changed the relationship between notaries and their clients. An elderly or mobility-impaired person, an expatriate managing a succession from abroad, or a foreign buyer unfamiliar with French can now sign an authentic act without physically travelling to France. This accessibility constitutes a major competitive advantage for offices that have invested in these tools. For offices also managing complex property aspects, Certyneo's dedicated property solution usefully complements the CSN's offering for acts under private deed.

Migration to all-electronic: points of caution

Staff training and change management

The adoption of electronic signature in a notarial office is not limited to technical deployment. It implies a overhaul of business processes. Staff must be trained in the use of tools (Real.not, ARDI), in managing exceptions (connection failure, refusal to sign remotely) and in the deontological obligations that remain unchanged despite dematerialisation.

Management of hybrid flows

During a transition period — which may last several years for offices handling international acts or involving parties unfamiliar with digital tools — offices must maintain capacity to handle acts in paper format. The management of these hybrid flows requires rigorous organisation to avoid any confusion between the two processing chains. Interoperable solutions, such as those presented in the electronic signature solutions comparison, facilitate this coexistence.

Cybersecurity and data protection

Notarial offices handle some of the most sensitive data: assets, successions, family situations. The GDPR regulation (n°2016/679) and the NIS2 directive impose enhanced obligations regarding information system protection. Recourse to the RPVN and CSN infrastructures offers a high level of protection, but each office remains responsible for the security of its own workstations and password policy. An annual cybersecurity audit is strongly recommended, particularly for offices that have migrated to the cloud.

Applicable legal framework for notarial electronic signature

The legal validity of notarial electronic signature rests on a complex articulation between European law, French civil law and specific notarial law.

The eIDAS regulation n°910/2014 (and its revision eIDAS 2.0 currently being deployed) constitutes the European foundation. It defines three levels of electronic signature (simple, advanced, qualified) and establishes the principle of non-discrimination: a document signed electronically cannot be rejected solely on the grounds that it is in electronic form. Qualified signature benefits from a legal presumption of reliability and legal equivalence with handwritten signature in all Member States.

Articles 1366 and 1367 of the Civil Code lay the foundations of common law: an electronic written document has the same probative force as a paper document provided that its author can be duly identified and the integrity of the document is guaranteed. Article 1367 specifies that the reliability of the process is presumed, unless proof to the contrary, when qualified electronic signature is used.

The ordinance n°2005-759 of 4 July 2005 introduced the electronic authentic act into French law, amending the decree of 26 November 1971 relating to civil acts. The decree n°2005-973 of 10 August 2005 fixed its technical arrangements, in particular the obligation to resort to the central electronic registry.

The decree n°2020-395 of 3 April 2020 constituted a decisive step by generalising remote appearance of parties for authentic acts, a measure initially provided for on a temporary basis in the context of the health crisis, subsequently made permanent by the ASAP law.

The ETSI EN 319 132 standards (XAdES signatures), ETSI EN 319 122 (CAdES) and ETSI EN 319 162 (ASiC) define the technical formats of electronic signature recognised within the eIDAS framework. AAEs primarily use the PAdES format (PDF Advanced Electronic Signatures, ETSI EN 319 102) for PDF format documents.

GDPR n°2016/679 requires the notary, as a data controller, to implement appropriate technical and organisational measures to protect the personal data of the parties. Article 32 of GDPR requires in particular the encryption of data in transit and at rest, an obligation fully satisfied by the RPVN infrastructure.

The NIS2 directive (transposed into French law by law n°2023-703 of 1 August 2023) requires operators of essential services — a category to which certain trust service providers involved in the notarial chain belong — to report significant security incidents to ANSSI within 24 hours.

Any breach of these obligations exposes the notary to disciplinary sanctions pronounced by the Chamber of Notaries, as well as civil and criminal sanctions that may extend to the nullity of the act.

Concrete usage scenarios

Scenario 1: an intermediate-sized notarial office handling international successions

A notarial office with around ten staff members, specialising in property law and international private law, handles between 80 and 120 successions each year involving heirs residing outside France (European Union, North America, Francophone Africa). Before the implementation of remote appearance via ARDI, each signature of a certificate of heirship or succession declaration required physical travel or the establishment of notarial powers of attorney in the countries concerned — a procedure that could take 4 to 8 weeks and generate significant costs for families.

Since full deployment of the remote AAE system, this office has reduced the average handling time for cross-border successions by 65%, falling from an average of 11 weeks to less than 4 weeks. Customer satisfaction has progressed notably, and the office has been able to absorb a 20% increase in its act volume without hiring additional staff.

Scenario 2: a regional property developer managing off-plan sales (VEFA)

A property developer realising between 150 and 200 off-plan sales per year works with three partner notarial offices. The multiplicity of stakeholders (buyers, developer, banks, guarantors) made coordinating signatures particularly complex in paper format, requiring the organisation of appointments often postponed and the management of numerous document exchanges.

Following joint adoption of electronic signature for preliminary contracts (under private deed with advanced level) and final acts (AAE with qualified level), the average sales cycle was reduced by 3 weeks. Incidents related to signature errors or omissions fell by 90%, and notarial teams saved approximately 25% of the time spent following up with parties. For acts under private deed, offices use a B2B signature solution compliant with eIDAS, allowing buyers to sign from their smartphone in less than 5 minutes.

Scenario 3: a rural notarial office serving elderly clients unfamiliar with digital tools

A rural notarial office serving a sparsely populated area faces a particular challenge: a significant proportion of its clientele, comprising people over 70, is unfamiliar with digital tools. Yet geographical distance (some clients live more than 45 minutes from the office) makes travel cumbersome, particularly for simple acts such as donations between spouses or powers of attorney.

The office has implemented a hybrid support arrangement: a staff member visits the client's home with a preconfigured tablet for mobility-impaired cases, whilst independent clients sign from their own equipment. This arrangement has made it possible to maintain proximity service whilst reducing the office's travel costs by approximately 30%. The reduction in paper (printing, postal sending, physical archival) represents estimated annual savings of several thousand pounds.

Conclusion

Electronic signature is today fully integrated into the exercise of the French notarial profession. From the central electronic registry to remote appearance via ARDI, through qualified signature imposed for authentic acts, the legal and technical framework is solid, mature and recognised at European level thanks to the eIDAS regulation. For acts under private deed, fee agreements and internal documentary flows, notarial offices have every interest in relying on a specialised SaaS solution, compliant with eIDAS and adapted to the constraints of the legal sector.

Certyneo supports legal professionals in their digital transformation with a platform designed to meet the highest compliance requirements. Discover the Certyneo solution dedicated to legal firms or start for free to assess the impact on your documentary processes.