Holographic will: validity, nullity and contestation — what you need to know

You have just lost a parent in Bourges and, while sorting through their papers, you come across a loose leaf, handwritten, dated and signed. "This is my will", the title announces. But is it really valid? Can a simple letter organise the succession of sometimes considerable assets — a house in Aubigny-sur-Nère, a bank account, memories? The question is crucial: if the will is void, the legal rules of succession will apply, perhaps contrary to the deceased's wishes. The Paris Judicial Court, in a judgment of 2 September 2024, reminds us of the strict conditions for the validity of a holographic will and the frequent grounds for nullity. A decision that enlightens all heirs, but also those who wish to write their last wishes without going through a notary.

Yes, it is tempting to write one's own will. No fees, no appointments, total freedom. But this freedom comes at a price: the risk of seeing the document contested by a disgruntled heir or a family member left out. The Paris court has just resolved a typical dispute: a handwritten will, contested on the grounds that it was not entirely in the deceased's handwriting, and that the date was uncertain. What criteria did the judges use? And how to avoid these pitfalls? Let's dive into this case.

The facts: a story that happens every day

Mr. X, a retired man from Bourges, widower, died in 2022. He leaves two children, Paul and Marie. A few days after the funeral, Paul discovers in a drawer of his father's desk a handwritten document entitled "My last wishes". The text, dated 15 March 2020, bequeaths the family home in Aubigny-sur-Nère to Paul alone, and gives Marie a sum of money (€50,000) and some furniture. Marie, who expected to share the house equally, contests the will. She brings the matter before the Paris Judicial Court (competent because the deceased owned an apartment in the capital), arguing that the handwriting is not her father's — it would have been forged by Paul — and that the date is false, because the father was already suffering from cognitive impairment at that time.

The case is complex. A handwriting expert report is ordered. The expert concludes that the handwriting is very similar to that of the deceased, but shows "suspicious hesitations" on certain letters. As for the date, medical records show that Mr. X was indeed being treated for early-stage Alzheimer's disease in March 2020, but he remained lucid most of the time. The court must therefore decide: is the will valid, despite doubts about the handwriting and the testator's capacity?

The reasoning of the court — broken down

The court first recalls the legal foundations. Article 970 of the Civil Code requires that the holographic will be "written entirely, dated and signed by the hand of the testator". Three cumulative conditions. The first is handwriting: it must be complete, without any printed or dictated passage. The second is the date: it must include the day, month and year, and be certain (without erasure or deletion). The third is the signature: it must be placed at the end of the text, and be legible or at least identify the testator.

Here, Paul's defence argued that the will was perfectly valid: authentic handwriting, clear date, signature present. Marie, on her part, raised three grounds: 1) the handwriting was "forged or influenced", therefore not the testator's hand in the strict sense; 2) the date was doubtful because the testator was not in full possession of his faculties; 3) the will was the product of Paul's abuse of weakness, who took advantage of the father's vulnerability.

The court dismisses the forgery claim: the handwriting expert report, although noting anomalies, does not establish falsification. But it upholds the argument on the date. For the judge, the date must be certain at the time of drafting. However, if the testator suffered from cognitive impairment, the date may be challenged if it could have been added later or if the testator was not aware of the time. Here, the father was being treated for Alzheimer's; the handwritten date "15 March 2020" could not be verified by a witness or a contemporaneous document. The court considers that proof of the date is not sufficiently established. Consequently, the will is declared void for lack of a certain date. The succession therefore proceeds according to the legal rules: Paul and Marie inherit the house in equal shares.

This decision illustrates the strictness of the courts on the date. Even if the handwriting and signature are valid, an uncertain date — especially in cases of cognitive impairment — can be enough to invalidate the will. This is a confirmation of consistent case law (Civ. 1re, 20 Jan. 2010, appeal no. 08-19.185), but the court here emphasises the link with the testator's capacity.

What this means for you — concretely

Whether you are a parent wishing to make a will, or an heir discovering a handwritten document, this decision has direct implications.

For the testator: if you write your own will, the date must be impeccable. Avoid approximate dates ("spring 2024") or erasures. Better to date in both figures and words (e.g. "two thousand twenty-four"). And if you have health problems, have your lucidity certified by a doctor. A simple medical certificate attached to the will can save your wishes.

For the heir contesting: you can challenge the will for lack of date, but also for lack of handwriting or unsound mind. Courts are demanding on proof. Gather medical documents, testimonies, and request a handwriting expert report. In this case, the expert report cost about €1,500, but it was decisive. If you win, the costs can be ordered to be borne by the losing party.

For the heir defending the will: prepare evidence of the testator's capacity at the time of drafting (witnesses, letters, videos). And if the date is vague, try to show that it corresponds to a known event (birthday, holiday). Here, Paul failed because no external element corroborated the date.

Concrete example: imagine a house in Aubigny-sur-Nère worth €180,000. Without a will, Paul and Marie share: each receives €90,000. With a valid will, Paul would have had €180,000 and Marie only €50,000 (plus furniture). The difference is considerable. The nullity of the will therefore has a huge financial impact.

Four tips to avoid this type of dispute

• Have your will checked by a notary, even if you write it yourself. The notary can advise you on form, and above all, can keep the original in his or her register, which avoids disputes over authenticity and date. The cost? About €150 for a deposited holographic will.
• Strictly comply with the three conditions: handwriting, complete date (day/month/year), signature at the end. No corrections, no erasures. If you need to modify, better to rewrite the entire will.
• Attach a medical certificate of lucidity if you are elderly or ill. Ask your doctor for a dated document attesting that you are fit to make a will. This neutralises accusations of cognitive impairment.
• Inform your heirs of the existence of the will and where it is kept. If the will remains hidden, it can be lost or destroyed. Discuss it with a trusted person or your notary. This avoids bad surprises.

Further reading: related case law and developments

This decision is part of a rigorous line of jurisprudence. For example, the Court of Cassation (Civ. 1re, 8 Dec. 2021, no. 20-10.651) invalidated a holographic will where the date was simply "2020", without month or day, holding that the date must be complete. Here, the court goes further: even a proper date can be considered uncertain if it is not corroborated by external elements, especially if the testator is vulnerable.

On the other hand, a different trend is emerging: courts are becoming more flexible on the medium. A will written on a diary, a notebook, or even a whiteboard (if signed and dated) has been validated (TGI Paris, 2017). But the date remains the weak point. The reform of succession law in 2022 did not modify Article 970. In the future, the legislator may simplify the rules, but in the meantime, caution is advised.

Key points to remember

• A holographic will must be written, dated and signed by the hand of the testator. The date must be complete and certain.
• If contested, the burden of proof of validity lies on the person relying on the will. You must demonstrate that the three conditions are met.
• Cognitive impairment of the testator at the time of drafting can lead to nullity, especially if the date is suspect. A medical certificate is your best defence.
• The nullity of a holographic will only benefits the legal heirs: the succession then follows the rules of intestate succession. If the will is partially void, only the defective part is invalidated.
• To avoid any dispute, resorting to an authentic will (made before a notary) remains the safest solution. It costs between €100 and €200, but it is virtually unchallengeable.

Are you in a similar situation? A 30-minute initial consultation with Maître Perucca (€45) can save you months of proceedings — and often much more. Book an appointment →