Executive Summary & Key Takeaways
Essential Checklist- ✓ Under French succession law (Réserve Héréditaire), children are protected heirs who automatically inherit 50% (1 child), 66% (2 children), or 75% (3+ children) of a deceased parent’s estate.
- ✓ Crucially, certain ownership structures (such as a Tontine clause or changing your matrimonial regime) can only be inserted into the property deed at the time of purchase - not added later.
- ✓ Married couples with children from the same marriage frequently adopt a French matrimonial regime (Communauté Universelle avec Clause d’Attribution Intégrale) or Donation entre Époux so the surviving spouse retains full security.
- ✓ Couples with children from previous relationships (blended families) require careful advice from the Notaire before signing the Compromis de Vente to avoid high step-parent inheritance tax (60%) or forced sale rights.
1. How French Forced Heirship (Réserve Héréditaire) Differs From UK & US Law
In common-law countries (England & Wales, the US, Canada, Australia), testamentary freedom allows you to write a will leaving your entire share of a property to your surviving husband, wife, or partner.
France operates under the Napoleonic Civil Code, which protects bloodline children through the Réserve Héréditaire. By default, when one owner dies, a fixed portion of their share of the French property passes immediately to their biological or adopted children:
- 1 Child: 50% reserved for the child; 50% freely disposable (quotité disponible).
- 2 Children: 66.6% (two-thirds) reserved equally for the children; 33.3% freely disposable.
- 3 or More Children: 75% (three-quarters) reserved equally for the children; 25% freely disposable.
- Note on Unmarried Couples: In France, unmarried partners (concubins) who have not entered into a civil partnership (PACS) or marriage are treated as complete legal strangers for inheritance tax - facing a 60% inheritance tax rate on anything left to each other above €1,594. Married and PACS partners pay 0% inheritance tax between each other.
2. Main Legal Tools to Protect a Surviving Spouse at Purchase
Because changing how a property is held after completion triggers full Notaire re-registration fees, you should always tell your Notaire about your family structure (married vs. unmarried, shared children vs. children from a prior marriage) right after your offer is accepted.
Depending on your situation, the Notaire will recommend one of four standard solutions:
- 1. Donation entre Époux (Gift Between Spouses / "Au Dernier Vivant"): A simple, inexpensive Notaire deed (~€300) signed after purchase for married couples. It allows the surviving spouse to retain 100% life use (usufruit) of the entire home for the rest of their life, while the children hold the bare ownership (nue-propriété) until the second spouse passes away.
- 2. Adoption of a French Matrimonial Regime (Communauté Universelle avec Clause d’Attribution Intégrale): Best suited for married couples whose children are all from their current marriage. The entire French property passes 100% outright to the surviving spouse on first death with zero succession formalities.
- 3. The Tontine Clause (Clause d’Accroissement): Must be inserted into the Acte Authentique on the day of purchase (it can never be added later). Historically used by couples with complex family structures so the survivor is deemed to have owned 100% of the property from day one, though tax implications must be checked if the home exceeds €76,000 and partners are unmarried.
- 4. EU Succession Regulation (Brussels IV) Election: Allows UK, US, or Irish nationals to stipulate in a formal will that the law of their nationality (e.g., English law or a US state’s law) should govern their estate. Note: A 2021 French law (Article 913 paragraph 3 of the Civil Code) allows EU-resident children to claim a compensatory share on French assets if their parent was an EU resident, so Brussels IV should always be paired with proper Notaire advice.
You do not need to finalise your inheritance structure before signing the initial Compromis de Vente! The Compromis always includes a "Clause de Substitution" or allows you and the Notaire to specify the exact buying structure (indivision, tontine, matrimonial declaration, or SCI) during the 12-week window before the final Acte Authentique.