Electronic signature inheritance notary: 2026 guide

The death of a loved one triggers a series of administrative and legal formalities, with the notary at the centre. In recent years, the question of electronic signature in succession has raised legitimate questions: can a succession declaration be signed online? Can a holograph will be dematerialised? What obligations rest on heirs? This article clarifies the legal validity of electronic signature in succession matters, applicable texts and best practices for 2026.

What electronic signature covers in succession law

Succession law in France is primarily codified in articles 720 and following of the Civil Code. It is characterised by demanding formalism, particularly for authentic acts drafted by the notary. The digitalisation of this sector has accelerated since Act 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 draw up 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 notarial 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 their profession. The heirs sign in the notary's presence, on a tablet: the process affixes an image of their handwritten signature to the deed (article 17 of décret n° 71-941). An heir living further away may appear before another notary, linked by videoconference, who collects their consent and signature (article 20 of the same décret). The declaration of estate, however, is not a notarised deed but a tax declaration, filed according to the rules set out below.

Will and electronic signature: a principled incompatibility

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

The authentic will, by contrast, is drawn up by two notaries, or by one notary assisted by two witnesses (article 971 of the French Civil Code); the testator dictates their wishes, then signs after the reading (article 972). All parties are physically present: no remote route exists for this deed. Décret n° 2020-395 du 3 avril 2020, which had allowed notarised deeds to be drawn up 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 on a permanent basis (see below).

This fundamental distinction between holograph will and authentic will underpins all reflection on succession digitalisation.

The concrete obligations of heirs facing dematerialisation

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

The succession declaration to the tax authority

The declaration of estate (formulaire n° 2705-SD and its appendices) cannot be filed online: impots.gouv.fr offers no online service for submitting it. It is handed in or sent in two copies to the service de l'enregistrement 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 metropolitan France, or within twelve months in other cases.

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

The partition deed and the transaction protocol

The deed of partition is often the most complex document in an estate. Where it is amicable, 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 linked by videoconference, or is represented by an agent.

For purely movable partitions or transaction protocols between heirs, an advanced electronic signature — within the meaning of article 26 of eIDAS Regulation — may suffice, absent any mandatory authentic form. To learn more about the different signature levels, consult our comprehensive guide to electronic signature.

Identity verification: a critical point of vigilance

One of the major challenges of wills, estates and electronic signature is verifying the heirs' identity. For a notarised deed, it is the notary who verifies the identity of the parties appearing, either 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 the holder's identity has been verified in their physical presence or by a method offering an equivalent level of assurance (article 24 of the eIDAS Regulation, as amended by Regulation (EU) 2024/1183, known as eIDAS 2.0).

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

Special cases: international successions and residence abroad

With globalisation, many successions involve heirs residing abroad. EU 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, using 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 apostilled proxy or 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), whose documentary deliverables are then filed with evidentiary value.

Best practices for the notarial office and families in 2026

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

For the notary instrumenting

• Drawing up electronic notarised deeds on the REAL network, using the notary's REAL key: it is the profession's infrastructure, overseen by 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 process integrity in case of dispute.
• Inform the parties of the nature of the signature used (advanced vs qualified) and its probative implications.

For heirs and their advisers

• Require provider qualification: a well-equipped notary must be able to produce the qualified certificate of his TSP and demonstrate its presence on the national trust list.
• Keep electronic receipts and signature logs: they will constitute elements of evidence in case of 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 offering for 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 rigorously mastered.

Civil Code — articles 1366 and 1367 Article 1366 sets out the principle of equivalence between electronic and paper writing, provided that the person from whom it emanates can be duly identified and the document is established and preserved in conditions designed to guarantee its integrity. Article 1367 clarifies 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 assured and the document's integrity guaranteed, under conditions set by decree in the 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 electronic signature has a legal effect equivalent to that of a handwritten signature (article 25(2) of eIDAS). For notarial notarised deeds, the notary's signature must be qualified; the parties themselves 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 with 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 an image of their handwritten signature (article 17 of décret n° 71-941). Articles 20 and 20-1 of the same décret govern appearance before a second notary and the power of attorney established remotely.

ETSI EN 319 132 and EN 319 122 standards These European standards define the requirements for advanced signature formats (XAdES, CAdES, PAdES) and 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 when verifying heirs 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 as long as necessary to prove signature authenticity.

Main legal risks The main risk is nullity of the act if the signature level used is lower than what the law requires (for example, a simple signature affixed to a partition deed of real property). In succession matters, a null act can lead to reopening of the succession, disputes between heirs and a challenge of property rights over transmitted assets. The notary's professional civil liability can be engaged in case of non-compliance of 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 ten associated notaries and about a hundred employees manages approximately 400 succession files each year. Before dematerialisation, collecting heirs' signatures represented on average 3 to 5 physical visits per file, with waiting periods potentially reaching 6 weeks for geographically dispersed families.

After deploying a qualified electronic signature solution for documents signed outside the notarised deed, the practice reduced the average time taken to collect signatures to 5 working days for mandates and private powers of attorney. The proportion of files held up 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; certificates of heirship and deeds of partition continue to be signed at the practice, by the agent.

Scenario 2 — A law firm specialising in contentious succession law

A law firm of 8 collaborators, specialising in patrimonial and contentious succession law, assists families in judicial partition proceedings. In this context, signing amicable transaction protocols and mandate agreements is a major point of friction: 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 for movable property signed in less than 48 hours, compared to 2 to 3 weeks previously. Qualified timestamping and the exportable audit log strengthened the probative soundness of agreements, reducing the risk of subsequent challenge before the judge. Savings in travel and reprography costs were estimated at approximately 15% of the annual administrative cost of the successions 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 assets comprise a property and several bank accounts. The need to gather each heir's consent within the timeframe set by the tax authorities (6 months for the declaration of estate) 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 by the notary, with the agents signing at the practice. The entire process — from opening the file to the final signature — was completed within 11 weeks, well within the 6-month statutory deadline, thereby avoiding any tax penalty for late filing.

Conclusion

Electronic signature in estate settlement 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 using a qualified electronic signature, with heirs signing in the notary's presence or by power of attorney; wills, whether holographic or authentic, cannot be signed remotely. Verifying the heirs' identity, ensuring traceability of operations and choosing 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 assisting families in succession disputes 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.