French-American Divorce and Matrimonial Property: When Community Property Meets the French Matrimonial Regime

Family law · 5 min read · By Olivia Uzan

Ask an American what they own with their spouse, and they will usually answer by state: “We’re in California, so it’s community property.” Ask a French person the same question, and they will answer by regime: the legal framework their marriage runs on. Understanding how these two ways of thinking collide is the heart of a French-American property divorce.

What is a “matrimonial regime”?

In France, marriage automatically comes with a property “operating system.” It governs what belongs to each spouse, what belongs to both, and how everything is split if the marriage ends. This concept exists across civil-law countries but has no direct equivalent in most U.S. states, which is a frequent source of confusion for American spouses.

If a French couple signs nothing, they fall under the default regime, the communauté réduite aux acquêts. In plain terms: what each spouse owned before marriage, or later inherited or received as a gift, stays personal; what the couple earns and acquires during the marriage is shared. Americans can think of it as a community-property system, but with sharper lines around pre-marital and inherited assets.

Couples can also choose alternatives. Séparation de biens keeps everything separate, much like a strong prenuptial agreement in a U.S. common-law state; each spouse keeps what is in their own name. Participation aux acquêts is a hybrid: spouses live as if separate during the marriage, but at the end, the one who grew richer shares part of that growth, an idea close to equitable sharing of the increase in wealth.

Which country’s law governs your property?

Here is the twist that trips up international couples: the law that decides your regime often depends on when you married.

Married before 1 September 1992: the applicable law is generally tied to where you first set up home together as a couple, and it can follow you for life.

Married between 1 September 1992 and 28 January 2019: an international treaty applies, typically pointing to the law of your first shared habitual residence after the wedding.

Married on or after 29 January 2019: European rules apply, generally pointing to the law of your first common habitual residence, with the ability to choose your applicable law in a formal agreement.

The trap of “automatic change”

For older marriages in particular, the applicable law can change automatically over time, for example, if a couple lives long enough in a country of shared nationality. A French-American couple who married in the 1980s, lived in France, then relocated to the U.S. for a decade or more, may discover that the law governing their property quietly shifted along the way. This is not academic; it can move an asset from “shared” to “personal,” or the reverse.

The concept of “récompense”

Under a community regime, French law tracks the money that flows between personal and shared pots and rebalances it at the end through a mechanism called récompense. If one spouse used a personal inheritance to pay down the mortgage on the shared family home, the community may “owe” that spouse a compensating amount when everything is unwound. Getting these calculations right can shift the final split significantly.

Consider Sophie and Mark. Married in 1999, first home in Boston, later relocated to Lyon. Mark assumes Massachusetts rules apply because that is where they started. In fact, because of when and where they married, French principles may govern much of their property, and Sophie’s early inheritance, poured into their shared home, may generate a récompense in her favor. Neither of them guessed any of this from the wedding album.

Your marriage certificate, and its date, may reveal more about your divorce than you expect. Contact us for a confidential review of which law governs your property.

This article is general information and not legal advice. For guidance on your specific situation, please consult a qualified lawyer.