Electronic Signature for Notaries: Complete Guide 2026

Electronic Signature for Notaries: Complete Guide 2026

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 gradually become an essential tool in notarial offices. In 2026, virtually all electronic authentic acts (AAE) are signed remotely, significantly reducing timeframes and logistical constraints for parties. This article explains precisely how to use electronic signature with French notaries: which acts are concerned, which signature levels apply, how the procedure unfolds 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 merely apply the general law on electronic signature. It benefits from a derogatory and reinforced framework, arising 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 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 officer, it constitutes prima facie evidence unless successfully challenged by proof to the contrary, 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 registry, managed by the Caisse des dépôts et consignations (CDC) for the account of the Conseil supérieur du notariat (CSN);
• The appearance of parties may be physical or, since 2020, entirely remote via a secure electronic remote appearance system (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 signature and management of electronic authentic acts, integrated into the software environment of notarial offices;
• Virtual Private Network for Notaries (RPVN): the secure infrastructure through which all acts and sensitive exchanges are transmitted;
• ARDI (Act Received Remotely through Immersive Technology): the system for remote appearance via secure videoconference, 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 acceptable for authentic acts.

Different types of acts and applicable signature levels

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

Electronic authentic acts: mandatory qualified signature

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

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

Acts under private seal countersigned by notary

Certain acts, such as sale agreements, powers of attorney or commercial leases countersigned, may use an advanced electronic signature (AES), an intermediate level under the eIDAS regulation. In this case, parties can sign from their secure personal space, via a link sent by email, after identity verification by SMS OTP or through a document verification process (IDnow, Ubble, etc.).

This flexibility enables 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 superior to 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 automating these signature flows without resorting to the CSN's heavy infrastructure.

How electronic signature actually proceeds at the notary's office

Step 1: act preparation and identity verification

Before any signature, the notary is required to verify the identity of the parties. Within the framework 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 checks the relevant databases (FICOBA, FICOVIE or FNIDL according to the nature of the act). This step is non-negotiable: the notary undertakes personal liability for the identity of the parties.

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

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 offices wishing to optimise their signature flows for non-authentic acts, tools such as the Certyneo ROI calculator enable precise evaluation of productivity gains.

Measurable benefits for notarial offices

Reduction of timeframes and productivity gains

The generalisation of AAEs has enabled significant reduction in processing timeframes. According to data published by the Conseil supérieur du notariat in its 2024 annual report, over 85% of real estate sales now incorporate at least one dematerialised step, and 60% proceed entirely remotely. For an office handling 300 acts per year, the shift to full-electronic represents estimated savings of 15 to 25% of administrative time, equivalent to 0.5 to 1 FTE redeployable to higher-value tasks.

Enhanced security and complete traceability

Unlike the paper act, the AAE benefits from complete traceability: each action is timestamped, logged and verifiable. The central electronic registry guarantees document integrity indefinitely, with no risk of loss, deterioration or falsification. The audit log associated with each act constitutes irrefutable evidence in case of dispute.

Geographic accessibility and inclusion of parties

Remote appearance has profoundly modified the relationship between notaries and their clients. An elderly person or person with reduced mobility, an expatriate managing a succession from abroad, or a foreign buyer with limited French language skills 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 real estate aspects, Certyneo's dedicated real estate solution usefully complements the CSN's offering for acts under private seal.

Migration to full-electronic: key points of caution

Training of staff and change management

Adoption of electronic signature in a notarial office goes beyond technical deployment. It implies a redesign of business processes. Staff must be trained in the use of tools (Real.not, ARDI), management of exceptions (connection failures, refusal to sign remotely) and ethical 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 technology — offices must maintain capacity to process paper-format acts. 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 comparison of electronic signature solutions, facilitate this coexistence.

Cybersecurity and data protection

Notarial offices handle some of the most sensitive data: assets, successions, family situations. The GDPR Regulation (No. 2016/679) and the NIS2 Directive impose reinforced obligations regarding information systems protection. Recourse to RPVN and CSN infrastructure 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 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 non-discrimination principle: 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 establish the foundations of general law: electronic writing has the same probative force as paper writing provided that its author can be duly identified and document integrity is guaranteed. Article 1367 clarifies that the reliability of the process is presumed, unless proved otherwise, when qualified electronic signature is used.

Ordinance No. 2005-759 of 4 July 2005 introduced the electronic authentic act in French law, amending the Decree of 26 November 1971 relating to civil acts. Decree No. 2005-973 of 10 August 2005 established its technical arrangements, particularly the obligation to resort to the central electronic registry.

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

ETSI Standards EN 319 132 (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 PAdES format (PDF Advanced Electronic Signatures, ETSI EN 319 102) for documents in PDF format.

GDPR Regulation No. 2016/679 requires the notary, as data controller, to implement appropriate technical and organisational measures to protect the personal data of parties. Article 32 of GDPR notably requires encryption of data in transit and at rest, an obligation fully met by RPVN infrastructure.

The NIS2 Directive (transposed into French law by Law No. 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 declare significant security incidents to ANSSI within 24 hours.

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

Concrete usage scenarios

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

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

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

Scenario 2: a regional property developer managing future completion sales (VEFA)

A property developer realising between 150 and 200 future completion sales annually works with three partner notarial offices. The multiplicity of parties (buyers, developer, banks, guarantors) made signature coordination particularly complex in paper format, necessitating organisation of often-postponed appointments and management of numerous document exchanges.

Following joint adoption of electronic signature for preliminary contracts (under private seal with advanced level) and definitive acts (AAE with qualified level), average sales cycle has been reduced by 3 weeks. Incidents related to signature errors or omissions have declined by 90%, and notarial teams have saved approximately 25% of time devoted to follow-ups with parties. For acts under private seal, offices use a B2B signature solution compliant with eIDAS, enabling buyers to sign from their smartphone in less than 5 minutes.

Scenario 3: a rural notarial office assisting an elderly clientele unfamiliar with digital technology

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

The office has implemented a hybrid support system: an employee visits the client's home with a pre-configured tablet for cases of reduced mobility, while autonomous clients sign from their own equipment. This system has enabled maintaining proximity service links while reducing the office's travel expenses by approximately 30%. Paper reduction (printing, postal sending, physical archiving) represents estimated annual savings of several thousand euros.

Conclusion

Electronic signature is today fully integrated into the practice of the French notarial profession. From the central electronic registry to remote appearance via ARDI, through the qualified signature required for authentic acts, the legal and technical framework is solid, mature and recognised at the European level through the eIDAS regulation. For acts under private seal, fee agreements and internal document 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 get started for free to evaluate the impact on your document processes.