If you wish to diverge from the legal regulation of community property of spouses you can either reduce or extend your community property by an agreement which must be exclusively made by a notary as a notarial deed. By reducing we understand the case when from the property that has been acquired jointly will become sole property of one spouse only (for instance when a real estate bought jointly by both spouses becomes an exclusive property of only one spouse) or, rules will be set on the basis of which in the future each spouse will acquire designated property into their exclusive property. Extending the community property means that from the sole property of one spouse becomes community property of both spouses ( e.g. one of the spouses inherits a property and the spouses will subsequently change it into community property). The agreement can be concluded during the course of marriage or before marriage.

The purpose of these contracts is mainly to find a solution in the situations which could influence family property in a negative way. The contract can, for instance, reduce the impact of business risks of one spouse on the family and can avoid complicated settlement of property after the divorce of marriage or anticipate unwanted inheritance of the property by the descendant of one of the spouses only.