Quick Answer
What is a contrat de mariage?
A contrat de mariage is a prenuptial agreement signed before a notary in France, in which a couple chooses their matrimonial property regime — how assets, debts, and property will be treated during and after the marriage. Without one, French couples default to a standard legal regime automatically.
Last updated:
Last updated:
What is a contrat de mariage?
Also called: prenuptial agreement (French), régime matrimonial.
This one surprises a lot of couples marrying in France: even if you never think about a "prenup," French law still assigns you a legal property regime the moment you marry, whether you've chosen it consciously or not. A contrat de mariage is simply the tool couples use to opt for a different regime than the automatic default — and it has to be signed with a notary before the wedding, not after.
How a contrat de mariage works
- •Without a contrat de mariage, French couples automatically fall under the default regime — communauté réduite aux acquêts, broadly meaning assets acquired during the marriage are shared, while assets owned before it remain separate.
- •A contrat de mariage lets couples opt into a different régime matrimonial instead — common alternatives include séparation de biens (fully separate property) or communauté universelle (fully shared property).
- •It must be drawn up and signed before a notary, and has to be finalised before the civil marriage — it can't be added retroactively without a separate legal process later in the marriage.
- •Particularly relevant for couples where one or both run a business, own significant property before marrying, or are marrying across international jurisdictions.
Planning notes
- •Start the notary conversation early — a contrat de mariage takes real drafting time and has to be signed before the mariage civil, not squeezed in at the last minute.
- •If either spouse owns a business, significant property, or has assets in another country, this is worth discussing with both a notary and a financial adviser well before the wedding date.
- •Not every couple needs one — many are happy with the automatic default regime — but it's worth an informed decision rather than defaulting by omission.
- •Keep the signed contract with other legal wedding documents; it will matter for property, inheritance, and financial questions long after the wedding day itself.
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Do all French couples need a contrat de mariage?
No — it's entirely optional. Couples who don't sign one are automatically placed under the default legal regime (communauté réduite aux acquêts); a contrat de mariage is only needed if they want a different arrangement.
When does a contrat de mariage need to be signed?
It must be finalised before a notary before the civil marriage takes place — it cannot be created after the wedding without a separate, more involved legal process.
Is a contrat de mariage the same as a prenup in other countries?
It serves a similar practical purpose — defining how assets are treated in the marriage — but it operates within France's specific system of predefined matrimonial regimes rather than a fully custom, open-ended prenuptial contract.
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By Mayank JaiswalLast updated