Electronic signature succession notary: guide 2026

The death of a loved one triggers a series of administrative and legal formalities in which the notary plays a central role. For several years now, the question of electronic signature in a succession has raised legitimate concerns: can a succession declaration be signed online? Can a handwritten will be dematerialised? What obligations fall on heirs? This article clarifies the legal validity of electronic signature in succession matters, the applicable texts and best practices for 2026.

What electronic signature covers in succession law

Succession law in France is principally codified in articles 720 and following of the Civil Code. It is characterised by stringent formalism, notably for authentic acts drawn up by the notary. The digitalisation of this sector has accelerated since law no. 2000-230 of 13 March 2000, which established the equivalence between electronic writing and paper writing when certain technical and legal conditions are met.

Notarial authentic acts and qualified electronic signature

Since the décret n° 2005-973 du 10 août 2005, which amended décret n° 71-941 du 26 novembre 1971, notaries have been able to execute electronic notarised deeds, drawn up and stored on the profession's secure network, the Réseau électronique notarial (REAL). The notary's signature must be of qualified level (article 17 of décret n° 71-941, which refers to décret n° 2017-1416) and must therefore comply with the eIDAS Regulation No 910/2014: it relies on a qualified certificate, carried on the REAL key issued by the profession to each notary.

In practice, for a certificate of heirship or a deed of partition drawn up in electronic form, only the notary affixes a qualified electronic signature, issued by the certification authority of the profession. The heirs sign in the notary's presence, on a tablet: the process affixes the image of their handwritten signature to the deed (article 17 of décret n° 71-941). An heir who lives far away may appear before another notary, connected by videoconference, who collects their consent and signature (article 20 of the same decree). The déclaration de succession, meanwhile, is not a notarised deed but a tax return, filed in accordance with the rules set out below.

Will and electronic signature: a fundamental incompatibility

The question of will and electronic signature legal validity deserves an unambiguous answer: a handwritten will cannot be signed electronically. Article 970 of the Civil Code requires that it be entirely written, dated and signed by hand by the testator. Any digital signature, even qualified, is insufficient to validate a handwritten will.

The notarised will, on the other hand, is executed before two notaries, or before one notary assisted by two witnesses (article 971 of the French Civil Code); the testator dictates the provisions, then signs once they have been read out (article 972). Everyone is physically present: there is no remote route for this deed. Décret n° 2020-395 du 3 avril 2020, which had allowed notarised deeds to be executed remotely during the state of public health emergency, was a temporary measure and was not made permanent. Only the remote notarised power of attorney was retained (see below).

This fundamental distinction between handwritten will and authentic will conditions the entire discussion of succession dematerialisation.

Concrete obligations of heirs in the face of dematerialisation

The heir obligations electronic signature unfold at several stages of the succession procedure. Understanding these stages allows you to anticipate steps and avoid operational blockages.

Succession declaration to the tax administration

The inheritance tax return (formulaire n° 2705-SD and its annexes) cannot be filed online: impots.gouv.fr does not offer any online service for submitting it. It is delivered or sent, in two copies, to the tax registration office covering the deceased's place of residence, either by the heirs themselves or by the notary handling the estate. It is not compulsory for heirs in the direct line, the spouse or the Pacs partner where the gross estate assets are below €50,000 and they have not received any undeclared gift from the deceased; for other heirs, the threshold is €3,000. It must be filed within six months of a death occurring in mainland France, and within twelve months in other cases.

When the notary prepares the return, the heirs either sign it themselves or give the notary a mandate to sign and file it on their behalf. This mandate does not require the authentic form: depending on the office's practice, it may be signed electronically, with an advanced or qualified electronic signature. Where a deed instead requires a notarised power of attorney, it may be executed remotely (article 20-1 of décret n° 71-941, inserted by décret n° 2020-1422 du 20 novembre 2020): after a videoconference exchange with the notary, the principal signs with a qualified electronic signature. Since 1 October 2025 (décret n° 2025-538 du 13 juin 2025), identification must be carried out through the system of the French Higher Council of Notaries, operated with Docaposte.

Partitioning act and transaction protocol

The deed of partition is often the most complex document in an estate. When executed amicably, it must be executed in authentic form by a notary if real property is involved (article 835 of the French Civil Code). In electronic form, it is drawn up by the notary on the REAL network, and each heir signs before the notary, before a second notary connected by videoconference, or is represented by an agent.

For purely personal property partitions or transaction protocols between heirs, an advanced electronic signature — within the meaning of article 26 of the eIDAS regulation — may be sufficient, in the absence of mandatory authentic form. To learn more about the different signature levels, consult our comprehensive electronic signature guide.

Identity verification: a critical point of vigilance

One of the major issues in inheritance, wills and electronic signature is identity verification of heirs. For a notarised deed, it is the notary who verifies the identity of the parties appearing, in person or, for a remote power of attorney, through the profession's identification system. For other documents (mandates, agreements, private powers of attorney), a qualified certificate is issued only after verifying the holder's identity in their physical presence, or by a method offering an equivalent guarantee (article 24 of the eIDAS Regulation, as amended by Regulation (EU) 2024/1183, known as eIDAS 2.0).

Certyneo natively integrates identity verification workflows compatible with these requirements, which you can compare with other solutions on our electronic signature solutions comparison.

Specific cases: international successions and residence abroad

With globalisation, many successions involve heirs residing abroad. European Regulation no. 650/2012 of 4 July 2012 (the "Succession Regulation") harmonises the rules of jurisdiction and applicable law within the EU, but does not impose a specific format for signatures.

Heirs residing in the European Union

Since 1 July 2016, under article 25 of the eIDAS Regulation, a qualified signature based on a certificate issued in an EU member state is recognised as such in all the others. An heir residing in Germany or Spain may therefore sign remotely, with their own qualified certificate, documents that do not require the authentic form: a mandate given to the notary, a settlement agreement, or a private power of attorney. The notarised deed itself cannot be signed in this way: the heir must appear before a notary or grant a power of attorney.

This mutual recognition dates back to the original eIDAS Regulation; Regulation (EU) 2024/1183 adds, among other things, the European digital identity wallet, as explained in our guide to the eIDAS 2.0 Regulation.

Heirs residing outside the EU

For heirs established outside the European Union (United States, Canada, Maghreb, etc.), no automatic recognition exists. The notary must resort to an apostille power of attorney or a consular act, then verify the signatory's identity via a remote enrolment process. Some notaries rely on accredited third-party providers for video identification (remote KYC), the deliverables of which are then archived with evidentiary value.

Best practices for the notarial office and families in 2026

The technological maturity of the notarial sector has grown considerably since 2020. Here are the key recommendations for securing dematerialised succession procedures.

For the instrumenting notary

• Executing electronic notarised deeds on the REAL network, with the notary's REAL key: it is the profession's infrastructure, placed under the aegis of the French Higher Council of Notaries, that signs and stores them.
• Archive the complete digital file: audit trails, qualified timestamping logs, identity verification reports. These elements constitute proof of the integrity of the process in the event of a dispute.
• Inform the parties of the nature of the signature used (advanced vs qualified) and its evidentiary implications.

For heirs and their advisers

• Require provider qualification: a well-equipped notary must be able to produce their TSP's qualified certificate and demonstrate its presence on the national trust list.
• Keep electronic receipts and signature logs: they will constitute evidence in the event of a succession dispute.
• Anticipate delays: remote identity verification can take 24 to 72 hours depending on providers. In a succession, legal deadlines (notably the 6-month period for tax declaration) do not allow for technical delays.

Law firms wishing to structure their dematerialised signature offer for their heir clients will find dedicated resources on our electronic signature for law firms page.

Legal framework applicable to electronic signature in succession matters

The legal validity of electronic signature in the context of successions rests on a stack of texts that must be mastered rigorously.

Civil Code — articles 1366 and 1367 Article 1366 establishes the principle of equivalence between electronic writing and paper writing, provided that the person from whom it emanates can be duly identified and that the document is drawn up and preserved in conditions likely to guarantee its integrity. Article 1367 specifies that electronic signature consists in the use of a reliable identification process guaranteeing its link with the act to which it attaches. Reliability is presumed when the electronic signature is created, the signatory's identity is assured and the act's integrity is guaranteed, under conditions fixed by decree in Council of State (decree no. 2017-1416 of 28 September 2017).

eIDAS Regulation No 910/2014 and eIDAS 2.0 The eIDAS Regulation establishes three levels of signature (simple, advanced, qualified) and introduces mutual recognition of qualified signatures across the EU. A qualified signature carries legal effect equivalent to a handwritten signature (article 25(2) of eIDAS). For notarised deeds, the notary's signature must be qualified; the parties, meanwhile, sign in the notary's presence or before a second notary. Regulation (EU) 2024/1183, known as eIDAS 2.0, in force since 20 May 2024, strengthens identification requirements, notably through the European digital identity wallet (EUDI Wallet).

Décret n° 2005-973 du 10 août 2005 This founding text, which amends décret n° 71-941 du 26 novembre 1971, authorises notaries to draw up notarised deeds in electronic form. The notary affixes a qualified electronic signature compliant with décret n° 2017-1416; the parties and witnesses affix the image of their handwritten signature (article 17 of décret n° 71-941). Articles 20 and 20-1 of the same decree govern appearance before a second notary and the power of attorney executed remotely.

ETSI Standards EN 319 132 and EN 319 122 These European standards define the formats of advanced signature (XAdES, CAdES, PAdES) and the technical requirements applicable to qualified signatures. PAdES format (PDF Advanced Electronic Signatures) is the most commonly used for electronic notarial acts in France.

GDPR no. 2016/679 The processing of biometric data and identity data during heir identity verification constitutes processing of sensitive personal data. A data protection impact assessment (DPIA) is required for remote identity verification devices. Data must be minimised, encrypted and retained only for so long as necessary to prove the authenticity of the signature.

Main legal risks The principal risk is the nullity of the act if the level of signature used is lower than what the law requires (for example, a simple signature affixed to a real property partitioning act). In succession matters, a null act may result in reopening of the succession, disputes between heirs and a challenge to property rights over transmitted assets. The professional civil liability of the notary may be engaged in the event of non-compliance with the signature device used.

Usage scenarios: electronic signature in succession practice

Scenario 1 — A notarial office handling several hundred successions per year

An intermediate-sized notarial office, with around ten partner notaries and one hundred employees, manages approximately 400 succession files per year. Before dematerialisation, collecting signatures from heirs involved on average 3 to 5 physical visits per file, with waiting periods reaching 6 weeks for geographically dispersed families.

After deploying a qualified electronic signature solution for documents signed outside the notarised deed, the office reduced the average time taken to collect signatures to 5 working days for mandates and private powers of attorney. The proportion of files blocked due to a missing signature fell by around 60 %. For families with at least one heir residing abroad (nearly 20 % of the portfolio), these powers of attorney are now signed remotely; the certificates of heirship and deeds of partition continue to be signed at the office, by the agent.

Scenario 2 — A law firm specialising in contentious succession law

A law firm of 8 collaborators, specialised in patrimonial law and contentious successions, supports families in judicial partitioning procedures. In this context, the signing of amicable transaction protocols and mandate agreements is a major friction point: parties are often in conflict and geographically dispersed, making physical meetings costly and sources of tension.

By adopting an advanced electronic signature solution with enhanced audit trail, the firm was able to have partition protocols signed in less than 48 hours, compared to 2 to 3 weeks previously. Qualified timestamping and exportable audit logs strengthened the evidentiary soundness of agreements, reducing the risk of subsequent challenge before the judge. Savings in travel expenses and copying costs were estimated at approximately 15% of the annual administrative cost of the succession department.

Scenario 3 — A family with heirs residing in several EU countries

An estate opened in France involves four heirs residing respectively in France, Belgium, the Netherlands and Italy. The estate comprises a real property and several bank accounts. The need to gather each heir's consent within the deadlines imposed by the tax authorities (6 months for the inheritance tax return) calls for rigorous organisation.

Thanks to the mutual recognition of qualified signatures between member states, the three heirs residing outside France signed the necessary powers of attorney remotely, using their national qualified certificate; the certificate of heirship and then the deed of partition were executed before the notary, with the agents signing at the office. The entire process — from opening the file to the final signature — was completed in 11 weeks, well within the legal deadline of 6 months, thereby avoiding any tax penalty for late filing.

Conclusion

Electronic signature in an estate is a legal and operational reality in 2026, but it is governed by strict rules that neither heirs nor practitioners can afford to ignore. Electronic notarised deeds are signed by the notary with a qualified signature, with heirs signing in the notary's presence or by power of attorney; wills, whether holographic or notarised, cannot be signed remotely. Identity verification of heirs, traceability of transactions, and the choice of a qualified trust service provider are the three pillars of a secure dematerialised process.

Whether you are a notary wishing to modernise your office, a lawyer accompanying families in succession litigation or an heir seeking to understand your rights, Certyneo offers you a qualified electronic signature solution, compliant with eIDAS 2.0, with integrated identity verification. Request a demonstration on certyneo.com/contact or explore our pricing tailored to legal professionals.