3 How can the spouses arrange their property regime?

3.1. Which provisions can be modified by a contract and which cannot? Which matrimonial property regimes may be chosen?

The spouses have the possibility of choosing a matrimonial property regime via a marriage contract. As alternative forms of matrimonial property regime, Belgian law provides the separation of property and the universal community of property. In addition, the spouses dispose of the possibility of regulating their matrimonial property at their discretion, in so far as they do not stipulate anything that conflicts with public order or good morals (Art. 1387 CC).

The separation of property regime (Art. 1466 - 1469 CC) knows only two estates: the estate of the one spouse and the estate of the other spouse. The income of each of the spouses remains separate, which means that they can each freely dispose of their earnings. Nevertheless, this does not mean that spouses who opted for separation of property cannot own anything jointly. However, the assets which they dispose of jointly are not "common", but rather "undivided". This means that the rules of the general law concerning co-ownership apply (Art. 577-2 CC). The specific status of the family home is also recognised in this regime.

In the universal community of property regime (Art. 1453 CC) there is virtually only one common property. Regardless of how the assets were acquired, they will always belong to the two spouses jointly.

3.2. What are the formal requirements and who should I contact?

The marriage contract is a solemn contract. Marriage contracts drawn up before the solemnisation of the marriage and amendments (modification of the matrimonial regime or change to another regime) to the stipulated or statutory matrimonial property regime must be established by authentic instrument (Art. 1392 CC).

3.3. When may the contract be concluded and when does it come into effect?

A marriage contract concluded before the solemnisation of the marriage enters into effect as of the solemnisation of the marriage (Art. 1391 CC). Spouses who have not concluded a marriage contract are, as of the day of their civil marriage, subject to the statutory regime, which is one of (separation of assets with) community only of the property acquired after the marriage has begun. The spouses can, by mutual agreement, amend (modify or change) their matrimonial property regime during the marriage by authentic instrument. See 2.1 and 3.4.

3.4. May an existing contract be modified by the spouses? If so, under what conditions?

The spouses can, by mutual agreement, amend (modify or change) their matrimonial property regime during the marriage. The amendment may not be in conflict with mandatory rules of law and may not harm the interests of the family or third parties. If one of the spouses so requests, the act amending the matrimonial property regime is preceded by a notarial inventory of all movable and immovable property and of the debts of the spouses. A notarial inventory is required if the amendment of the matrimonial property regime results in the liquidation of the previous regime (Art. 1394 CC).