Electronic Signature for Notaries: Complete 2026 Guide

The French notarial profession is undergoing an unprecedented digital transformation. Since Ordinance No. 2005-759 of July 4, 2005, and its successive implementing decrees, electronic signature has gradually become an indispensable tool in notarial offices. By 2026, almost all electronic authentic acts (EAAs) are signed remotely, significantly reducing delays 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 actually works, and which tools to choose to remain in compliance with the eIDAS regulation and notarial regulations.

The Specific Framework of Notarial Electronic Signature

The notarial profession does not simply apply common law on electronic signature. It benefits from a derogatory and reinforced framework, derived from several foundational texts that confer upon the electronic authentic act (EAA) the same probative force as a paper authentic act.

The Electronic Authentic Act (EAA): Definition and Scope

The EAA is defined by Decree No. 2005-973 of August 10, 2005, as amended by Decree No. 2020-395 of April 3, 2020, which generalized 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 evidence unless challenged by an action for forgery, and it is enforceable by operation of law.

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

• The notary must use a qualified electronic signature (QES) within the meaning of eIDAS regulation, the highest level in the European hierarchy;
• The act must be stored in a central electronic registry, managed by the Caisse des dépôts et consignations for the account of the Superior Council of Notaries (CSN);
• The appearance of the parties can be physical or, since 2020, entirely remote via a secure electronic remote appearance (ARDI system).

Tools Approved by the Superior Council of Notaries

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;
• Notaries' Virtual Private Network (RPVN): the secure infrastructure through which all acts and sensitive exchanges transit;
• ARDI (Act Received at Distance by Immersion): the remote appearance system via secure videoconference, generalized since the 2020 decree.

It is important to understand that notaries cannot use just any commercial electronic signature solution to sign EAAs. 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.

Different Types of Acts and Applicable Signature Levels

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

Electronic Authentic Acts: Mandatory Qualified Signature

For EAAs — real estate sales, gifts, 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), usually a cryptographic USB key or cloud HSM module;
• Qualified timestamping guaranteeing the certain date of signature.

The notary has 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 Seal Countersigned by Notary

Certain acts, such as preliminary sales agreements, powers of attorney, or countersgined commercial leases, may use an advanced electronic signature (AES), an intermediate level of eIDAS regulation. In this case, the 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 allows the notary to offer a fully dematerialized customer journey for acts not requiring the qualified level. The probative value is less than an EAA, 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, specializing in electronic signature for law firms — enable automation of these signature flows without resorting to the heavy CSN infrastructure.

How Electronic Signature Actually Works with a Notary

Step 1: Act Preparation and Identity Verification

Before any signature, the notary is required to verify the identity of the parties. In the context of remote appearance via ARDI, this verification is conducted via secure videoconference. The notary verifies in real time the identity documents presented to the camera and interrogates the databases FICOBA, FICOVIE, or FNIDL depending on the nature of the act. This step is non-negotiable: the notary engages personal liability for the identity of the appearing parties.

Step 2: Reading and Validation of the Act

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

Step 3: Multiparty Signature and Archiving

Once the act is read and approved, each party signs in the order defined by the notary. The notary affixes last his qualified signature, 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 executable electronic copy can be delivered instantly to the concerned parties.

The entire process, from summons 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 optimize their signature flows for non-authentic acts, tools such as Certyneo's ROI calculator make it possible to precisely evaluate productivity gains.

Measurable Benefits for Notarial Offices

Reduction of Delays and Productivity Gains

The widespread adoption of AAEs has led to a significant reduction in processing times. Real estate transactions now increasingly include at least one dematerialized step. For a firm handling 300 deeds per year, moving to an all-electronic process frees up administrative time that can be reallocated to higher value-added tasks.

Enhanced Security and Complete Traceability

Unlike the paper act, the EAA benefits from total traceability: each action is timestamped, logged, and verifiable. The central electronic registry guarantees document integrity over an unlimited period, without risk of loss, deterioration, or falsification. The audit log associated with each act constitutes irrefutable proof 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 someone with reduced mobility, an expatriate managing a succession from abroad, or even a foreign non-French-speaking buyer can now sign an authentic act without physically traveling to France. This accessibility constitutes a major competitive advantage for offices that have invested in these tools. For offices also managing complex real estate components, Certyneo's real estate solution usefully supplements the CSN's offering for acts under private seal.

Migration to Full Electronic: Points of Caution

Training of Staff and Change Management

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

Managing 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 process acts in paper format. Managing these hybrid flows requires rigorous organization 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 among the most sensitive data: estates, successions, family situations. GDPR regulation (No. 2016/679) and the NIS2 directive impose enhanced obligations regarding information systems protection. The use of 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.

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 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 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 probative force as paper writing 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 proven otherwise, when qualified electronic signature is used.

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

Decree No. 2020-395 of April 3, 2020 constituted a decisive step by generalizing remote appearance of parties for authentic acts, a measure initially provided for 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 of electronic signature recognized under eIDAS. EAAs primarily use the PAdES format (PDF Advanced Electronic Signatures, ETSI EN 319 102) for PDF format documents.

GDPR No. 2016/679 imposes on the notary, as a data controller, to implement appropriate technical and organizational 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 No. 2023-703 of August 1, 2023) imposes on 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 failure to comply with these obligations exposes the notary to disciplinary sanctions pronounced by the Chamber of Notaries, as well as to civil and criminal penalties that may include the nullity of the act.

Illustrative use-case scenarios

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

These scenarios are illustrative: they describe typical situations and do not report any measured results from a client. A notarial practice with about ten staff members, specializing in estate law and international private law, handles between 80 and 120 successions each year involving heirs residing outside France (European Union, North America, French-speaking Africa). Without remote appearance via ARDI, each signature of an affidavit of notoriety or a declaration of succession requires either a physical trip or setting up notarial powers of attorney in the countries concerned — a lengthy procedure that generates significant costs for families.

With a remote qualified electronic signature (AAE) solution deployed end-to-end, a practice of this type can substantially shorten the processing time for cross-border successions, improve family satisfaction, and absorb growth in its volume of deeds without hiring additional staff. The actual scale of the gain should be measured on the practice's own scope, before and after a pilot.

Scenario 2: A Regional Real Estate Developer Managing Future Completion Sales (VEFA)

A real estate developer realizing between 150 and 200 VEFA 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 organization of appointments often postponed and management of numerous back-and-forth of documents.

With the combined adoption of electronic signature for preliminary contracts (private agreement with advanced electronic signature) and for final deeds (AAE with qualified electronic signature), the sales cycle should shorten, signature errors or omissions should become rarer, and the time notarial teams spend chasing parties should decrease. For private agreement deeds, practices can use a B2B signature solution compliant with eIDAS, allowing buyers to sign from their smartphone. The actual scale of the gain should be measured on the real scope, before and after a pilot.

Scenario 3: A Rural Notarial Office Assisting an Elderly Client Base Unfamiliar with Digital Tools

A rural notarial office serving a sparsely populated area faces a particular challenge: a significant share of its clientele, made up of people over 70, is not very comfortable with digital tools. Yet geographic distance (some clients live far from the office) makes travel burdensome, especially for simple deeds such as donations between spouses or powers of attorney.

An office of this type can set up a hybrid support system: a staff member visits the client's home with a preconfigured tablet for cases of reduced mobility, while self-sufficient clients sign from their own device. This approach helps maintain a close, personal level of service while limiting the office's travel expenses. Reducing paper use (printing, postal mailing, physical archiving) also lowers costs. The actual scale of the gain should be measured on the office's own scope, before and after a pilot.

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, to the qualified signature required for authentic acts, the legal and technical framework is solid, mature, and recognized at the European level thanks to eIDAS regulation. For acts under private seal, fee agreements, and internal documentary flows, notarial offices are well-advised to rely on a specialized 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 law firms or start for free to evaluate the impact on your documentary processes.