Electronic Signature for Notaries: Complete 2026 Guide

The French notarial profession is experiencing unprecedented digital transformation. Since Ordinance No. 2005-759 of 4 July 2005 and its successive implementing decrees, electronic signature has progressively become an indispensable tool in notarial practices. In 2026, virtually all electronic authentic acts (AAE) are signed remotely, significantly reducing timelines and logistical constraints for the parties involved. This article explains precisely how to use electronic signature with French notaries: which acts are covered, which signature levels apply, how the procedure works in practice, and which tools to choose to remain compliant with the eIDAS regulation and notarial regulations.

The Specific Framework for Notarial Electronic Signature

The notarial profession does not simply apply the common 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 evidentiary force as a paper authentic act.

The Electronic Authentic Act (AAE): Definition and Scope

The AAE is defined by Decree No. 2005-973 of 10 August 2005, amended by Decree No. 2020-395 of 3 April 2020, which generalised the possibility of remote appearance. An electronic authentic act has the same characteristics as a paper act: it is received by a competent public official, it is conclusive short of proof of forgery, and it is enforceable by operation of law.

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 a central electronic register, 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 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 platform for signing and managing electronic authentic acts, integrated into the software environment of notarial practices;
• Notaries' Virtual Private Network (RPVN): the secure infrastructure through which all acts and sensitive exchanges transit;
• ARDI (Act Received at Distance through Immersion): the remote appearance system via secure videoconference, generalised since the 2020 decree.

It is important to understand that notaries cannot use just 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 the ANSSI, are admissible for authentic acts.

Different Types of Acts and Applicable Signature Levels

Not all signatures carried out in a notarial practice require the same level of security. The distinction between authentic acts and private deeds is fundamental.

Electronic Authentic Acts: Mandatory Qualified Signature

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

• A qualified certificate issued after face-to-face identity verification (or by video complying 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 definite date of signature.

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

Private Deeds Countersigned by Notary

Certain acts, such as preliminary sales contracts, mandates or countersigned commercial leases, may use advanced electronic signature (AES), the intermediate level of the eIDAS regulation. In this case, parties may sign from their secure personal space via a link sent by email, after identity verification by SMS OTP or by a document 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 evidentiary value is less than an AAE, but remains superior to a scanned handwritten signature.

Internal Documents and Routine Management Acts

For correspondence, simple procurations, 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 practices — allow automation of these signature flows without resorting to the CSN's heavy infrastructure.

How Electronic Signature Works Concretely at the Notary

Step 1: Act Preparation and Identity Verification

Before any signature, the notary is obliged to verify the identity of the parties. In the context of remote appearance via ARDI, this verification takes place via secure videoconference. The notary verifies in real time the identity documents presented to the camera and consults the FICOBA, FICOVIE or FNIDL files as applicable depending on the nature of the act. This step is non-negotiable: the notary engages their personal responsibility for the identity of those appearing.

Step 2: Reading and Validation of the Act

In accordance with Article 23 of the Decree of 26 November 1971 (as amended), the notary must read the act to the parties, even remotely. In the electronic framework, this reading may occur via screen sharing during the ARDI session. Each party has secure access to the document for consultation before signature.

Step 3: Multi-Party Signature and Archiving

Once the act has been read and approved, each party signs in the order determined by the notary. The notary applies their qualified signature last, conferring upon the act its authentic character. The act is then automatically transmitted to the central electronic register (MCE) managed by the Caisse des dépôts. An enforceable electronic copy may be delivered instantly to the parties concerned.

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

Measurable Benefits for Notarial Practices

Reduction of Timelines and Productivity Gains

The generalisation of AAEs has enabled a significant reduction in processing timelines. According to data published by the Conseil supérieur du notariat in its 2024 annual report, more than 85% of real estate sales now incorporate at least one dematerialised step, and 60% proceed entirely remotely. For a practice handling 300 acts per year, the transition to fully electronic processes represents an estimated saving of between 15% and 25% of administrative time, equivalent to 0.5 to 1 FTE that can be redirected 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 register guarantees document integrity over an unlimited period, without risk of loss, deterioration or falsification. The audit log associated with each act constitutes irrefutable evidence in case of dispute.

Geographic 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 with limited French language ability can now sign an authentic act without physically travelling to France. This accessibility constitutes a major competitive advantage for practices that have invested in these tools. For practices also managing complex real estate segments, Certyneo's real estate solution usefully complements the CSN's offer for private deeds.

Migration to Fully Electronic: Key Points of Attention

Staff Training and Change Management

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

Management of Hybrid Flows

During a transition period — which may last several years for practices handling international acts or involving parties unfamiliar with digital tools — practices must maintain the capacity to process acts in paper format. 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 practices handle among the most sensitive data available: estates, successions, family situations. The GDPR regulation (No. 2016/679) and the NIS2 directive impose reinforced obligations regarding information system protection. Use of the RPVN and the CSN's infrastructure offers a high level of protection, but each practice remains responsible for the security of its own workstations and password policy. An annual cybersecurity audit is strongly recommended, particularly for practices that have migrated to the cloud.

Legal Framework Applicable to 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 No. 910/2014 (and its eIDAS 2.0 revision 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 on the sole ground 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: electronic writing has the same evidentiary force as paper writing provided that its author can be duly identified and the document's integrity is guaranteed. Article 1367 specifies that the reliability of the process is presumed, unless proof to the contrary, when qualified electronic signature is used.

Ordinance No. 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. Decree No. 2005-973 of 10 August 2005 fixed its technical procedures, in particular the obligation to resort to the central electronic register.

Decree No. 2020-395 of 3 April 2020 constituted a decisive step in generalising remote appearance of parties for authentic acts, a measure initially intended on a temporary basis in the context of the health crisis, then made permanent by the ASAP law.

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

GDPR No. 2016/679 imposes on the notary, as data controller, the implementation of appropriate technical and organisational measures to protect the personal data of the parties. Article 32 of the 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 No. 2023-703 of 1 August 2023) imposes on essential service operators — a category to which certain trust service providers involved in the notarial chain belong — the obligation to report significant security incidents to the ANSSI within 24 hours.

Any breach of these obligations exposes the notary to disciplinary sanctions pronounced by the Notaries' Chamber, as well as to civil and criminal sanctions which may go so far as the nullity of the act.

Concrete Use Scenarios

Scenario 1: An Intermediate-Sized Notarial Practice Handling International Successions

A notarial practice with about ten staff members, specialising in patrimonial law and private international law, manages between 80 and 120 successions annually involving heirs residing outside France (European Union, North America, French-speaking Africa). Before the introduction of remote appearance via ARDI, each signature of a certificate of registration or declaration of succession required physical displacement or the establishment of notarial procurations in the countries concerned — a procedure that could take 4 to 8 weeks and generate significant costs for families.

Since the full rollout of the remote AAE facility, this practice 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 improved notably, and the practice has been able to absorb a 20% increase in act volume without hiring additional staff.

Scenario 2: A Regional Real Estate Developer Managing Off-Plan Sales (VEFA)

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

Following joint adoption of electronic signature for preliminary contracts (private deeds 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 declined by 90%, and notarial teams saved approximately 25% of the time devoted to chasing up parties. For private deeds, practices 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 Supporting an Elderly Clientele with Limited Digital Familiarity

A rural notarial office serving a sparsely populated area faces a particular challenge: a significant proportion of its clientele, composed of people over 70 years of age, is uncomfortable with digital tools. Yet geographic distance (some clients live more than 45 minutes from the office) makes travel burdensome, especially for simple acts such as donations between spouses or procurations.

The office has implemented a hybrid support scheme: a staff member visits the client's home with a pre-configured tablet for cases of reduced mobility, whilst autonomous clients sign from their own equipment. This arrangement has made it possible to maintain the proximity service link whilst reducing the office's travel expenses by approximately 30%. The reduction in paper (printing, postal sending, physical archiving) represents an estimated annual saving of several thousand euros.

Conclusion

Electronic signature is today fully integrated into the exercise of the French notarial profession. From the central electronic register to remote appearance via ARDI, through to the 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 private deeds, fee agreements and internal documentary flows, notarial practices are well advised to rely on a specialised SaaS solution, eIDAS-compliant 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 practices or start for free to evaluate the impact on your documentary processes.