Loss of French nationality: desuetude, declaration and appeal

Loss of French nationality often comes as a surprise. Some people ask for it, to take another nationality. Others discover it at the counter, when a court refuses their certificate because their family has lived abroad for more than fifty years. In both cases, there are ways back. A lawyer explains them in 20 minutes on Avocat20min.fr.

Loss of French nationality: the three main routes

The Civil Code provides for three families of cases. First, voluntary loss, by declaration or by decree. Second, loss imposed by the Government, for conduct contrary to the interests of France. Finally, loss through desuetude, recorded by a judge.

How it happens	Article	Who decides	Effective from
Declaration after acquiring a foreign nationality	Art. 23 and 23-1	You, then registration	Date of the foreign acquisition
Repudiation or declaration by a spouse	Art. 23-3 and 23-5	You, then registration	Date of the declaration
Release from allegiance	Art. 23-4	Government, by decree	Date of the decree
Acting as a foreign national, serving a foreign State	Art. 23-7 and 23-8	Government, after the Conseil d'État's opinion	Date of the decree
Desuetude	Art. 23-6 and 30-3	Civil court	Date set by the judgment

Stripping of nationality is a separate case, because it punishes serious offences. It only affects people who acquired French nationality: our guide to stripping of French nationality covers it.

Voluntary loss by declaration

The most common case concerns a French adult living abroad. If they voluntarily acquire another nationality, they normally keep French nationality. They only lose it if they expressly declare so.

This declaration can be made as soon as the application for the foreign nationality is filed. It must be made no later than one year after the acquisition. You file it at the consulate, or at the tribunal judiciaire if you live in France. The loss of French nationality then takes effect on the date of the foreign acquisition.

Other declarations exist. For example, a young person born abroad to only one French parent can repudiate French nationality between 17 and a half and 19. Likewise, a French national married to a foreigner can give it up if they took their spouse's nationality and live with them abroad.

Release from allegiance

If you meet none of the conditions for a declaration, another route remains open. The Government can authorise you, by decree, to lose French nationality (article 23-4). You must hold a foreign nationality.

The application uses form cerfa no. 16098, filed with the naturalisation platform or the consulate. The decree appears in the Journal officiel and only works for the future. If refused, you can appeal to the minister and then to the administrative court of Nantes.

Loss imposed by the Government

Two articles allow the Government to act without your consent. Article 23-7 targets a French national who in fact behaves as a national of a foreign country whose nationality they hold. Article 23-8 targets someone who works for a foreign army, a foreign public service or an international organisation France does not belong to, and refuses to stop despite an order.

In these cases, a decree is issued after a binding opinion of the Conseil d'État. This loss of French nationality only works for the future. It can be challenged before the Conseil d'État within two months.

Loss of French nationality through desuetude

Desuetude affects people who never asked for anything. It sanctions a lack of ties with France, prolonged over several generations.

The article 23-6 judgment

A judge can record the loss of French nationality of a person French by descent. Three further conditions apply. You lack the possession of French status, meaning you do not behave as a French national (passport, identity card, consular registration, voting). You have never had your habitual residence in France. Your French ancestors have had neither possession of status nor residence in France for half a century.

The article 30-3 barrier

Article 30-3 has a similar but more frequent effect. If you and your ancestors have lived abroad for more than fifty years, you can no longer prove your nationality by descent. It is enough that neither you nor your French parent had possession of status. The judge then records the loss of French nationality.

In practice, this bar often appears when you apply for a certificate. Our guide to the French nationality certificate explains that refusal. The Constitutional Council held both articles constitutional on 11 April 2025 (decision no. 2025-1130/1131/1132/1133 QPC). However, the judge cannot record a loss that would leave you stateless.

Families from former colonies

Many of these files involve families linked to former French territories. At independence, rules specific to each territory decided who kept French nationality. Articles 32 to 32-5 of the Civil Code, and older texts, still govern these situations.

Then, if the family has lived outside France for more than fifty years, article 30-3 may apply on top. These files therefore combine several layers of rules, sometimes with dates counted to the day. Have them analysed before taking any step, because a mistake in reasoning often costs years.

Getting it back: the article 21-14 declaration

The law provides a simple way back after a loss of French nationality through desuetude. Article 21-14 opens a declaration to people covered by article 23-6 or article 30-3.

You must meet one of these two conditions:

• have kept or built manifest ties with France of a cultural, professional, economic or family nature;
• or have actually performed military service in a French army unit, or fought in the French or allied armies in wartime.

The surviving spouse of such a person can also make this declaration. You file it at the tribunal judiciaire if you live in France, or at the consulate if you live abroad.

Ties are proved by concrete, lasting evidence. For example, regular stays in France, studies at a French school, property or a job in France, French relatives. On the other hand, mere statements from family members carry little weight, and recent or occasional ties rarely convince.

Refused registration: the appeal to the tribunal judiciaire

The administration has six months from the receipt to refuse registration. Without a decision within that period, the declaration must in principle be registered. A refusal must state its reasons and be notified to you.

You can then challenge the refusal before the tribunal judiciaire, within six months of notification (article 26-3). Representation by a lawyer is compulsory. The court does not simply cancel the refusal: it checks for itself whether you meet the conditions, then orders registration.

A minor can act alone from age 16. In addition, legal aid (aide juridictionnelle) can cover the costs if your income is modest.

Reinstatement, the other way back

After a voluntary loss, the article 21-14 declaration does not apply. You must then apply for reinstatement by decree, on criteria close to naturalisation, with residence in France. In some cases set out in article 24-2, a declaration is enough.

Our guide to reinstatement in French nationality details both routes. If you have never been French, French naturalisation remains the normal route. For your children born on French soil, see also the nationality of a child born in France to foreign parents.

When to see a lawyer

See a lawyer as soon as a court registry or a consulate raises article 30-3 against you. A lawyer first checks whether the loss of French nationality really applies to you, because the fifty-year count depends on each ancestor's history. They then choose the right route: challenge the desuetude, make the article 21-14 declaration, or apply for reinstatement.

A foreign nationals lawyer also gathers the evidence of your ties with France. They represent you before the tribunal judiciaire if registration is refused. The official page on voluntary loss of French nationality (in French) sums up the steps to renounce it.