The Four Matrimonial Regimes: An Essential Overview

French family law organises the financial relationships between spouses around four main regimes. Absent a prenuptial agreement, couples automatically fall under the community of acquisitions regime (communauté réduite aux aquêts), known as the legal regime. This applies to nearly 70% of married couples in France.

Under this regime, assets acquired during the marriage (income, savings, investments) are jointly owned, while assets held prior to the marriage or received by gift or inheritance remain the sole property of each spouse. Simple in theory, this structure generates increasing complexity as a portfolio diversifies: company shares, bare-ownership assets, life insurance policies, overseas holdings.

Separation of assets preserves absolute financial independence: each spouse owns, manages and freely disposes of their own assets. This is the preferred choice of entrepreneurs, professionals exposed to creditor risk, and couples in a second marriage wishing to protect children from a prior union.

Participation in acquisitions operates as a separation of assets during the marriage but provides a mechanism for sharing wealth accumulation upon dissolution. Each spouse is entitled to half of the other’s net enrichment over the course of the marriage. Though little known, it is a highly balanced regime for couples with asymmetric wealth profiles.

Finally, universal community places all assets — present and future, personal and joint — into a single common pool. Combined with a full attribution clause (clause d’attribution intégrale), it allows the surviving spouse to receive the entire estate with no inheritance tax due, at the sole cost of the sharing levy (2.5% since 2021).

Why and When to Consider a Change of Regime

A couple’s circumstances evolve. The financial profile at 40 or 50 often bears little resemblance to what it was at the time of marriage. Three broad scenarios commonly justify revisiting the matrimonial regime.

Business creation or acquisition. An entrepreneur operating under the legal regime exposes joint assets to professional creditors. Since the law of 14 February 2022 on the protection of sole traders, personal assets are better ring-fenced for individuals, yet in certain corporate structures a spouse’s property may remain at risk. Switching to separation of assets clearly isolates private wealth from entrepreneurial risk.

Approaching retirement and protecting the surviving spouse. As wealth accumulates and the succession horizon shortens, many couples — especially in second marriages or without children — wish to maximise protection for the surviving partner. Universal community with a full attribution clause addresses this objective directly: zero inheritance tax on the first death, full continuity of estate management.

Blended families. A couple where each spouse has children from a prior relationship must carefully consider their regime. Universal community can disadvantage the reserved heirs of a first marriage. Participation in acquisitions, or separation of assets combined with a well-calibrated spousal gift (donation au dernier vivant), often strikes a better balance.

The Procedure: What Changed in 2019

Long perceived as cumbersome and costly, the procedure for changing matrimonial regime was considerably simplified by the reform that came into force on 1 January 2020. Judicial approval is no longer systematic: a simple notarial deed suffices in the vast majority of cases.

The conditions remain strict. The change may only take place if both spouses are of legal age and legally capable, if at least two years have elapsed since the marriage or the previous change of regime, and if both parties consent freely. The notary receives both spouses, verifies their informed consent, and draws up the deed of change.

Judicial homologation remains mandatory in two cases: where one or more minor children are involved (the family court verifies their interests are protected), or where a creditor objects to the change within three months of the publication of the deed in the official register. Such objections are rare in practice, but any debt situation must be anticipated before initiating the process.

Tax and Succession Implications by Regime

The choice of matrimonial regime carries significant consequences on two fronts: the French wealth tax on real estate assets (IFI) and succession.

Impact on IFI

Under a community regime, jointly held real estate assets are fully included in the IFI base for both spouses, then allocated equally. Under separation of assets, each spouse declares only their own assets. For a couple where one partner holds substantial real estate assets acquired before the marriage (inheritance, pre-nuptial gift), this distinction can determine whether the household crosses the IFI threshold of €1.3 million.

Impact on Succession

This is where the choice of regime takes on its full strategic significance. Under the legal regime, upon the first death, half of the jointly owned assets automatically reverts to the surviving spouse (without tax), while the other half, together with the deceased’s personal assets, is subject to succession rules. The spouse may benefit from an allowance of €80,724 or full exemption under certain conditions.

Under universal community with a full attribution clause, the entire estate passes to the surviving spouse, free of inheritance tax, but subject to the sharing levy (2.5%). This strategy is particularly effective for childless couples or couples whose children are all joint: the tax saving can reach several hundred thousand euros on estates exceeding €1.5 million.

The Préciput Clause and the Spousal Gift

These two tools complement the matrimonial regime. The préciput clause entitles the surviving spouse to claim certain assets (primary residence, investment portfolio) before any partition of the estate. The spousal gift (donation au dernier vivant) extends the surviving spouse’s statutory rights to the maximum permitted by law. Precisely calibrating these instruments in conjunction with the chosen matrimonial regime is at the heart of high-end wealth management advisory.

Three Case Studies Illustrating the Value of a Change