The issue of the legal regime governing a share in the authorised capital of a limited liability company (LLC) owned by one of the spouses is cross-sectoral in nature. It lies at the intersection of family law provisions on joint ownership of spouses and corporate law provisions on participation in business entities. This article offers an analysis of the key aspects of the problem: whether the notarised consent of the other spouse is required when alienating a share in an LLC, whether a spouse can be considered a special person in a corporate dispute, how courts assess abuse of rights in the case of deliberate ‘dilution’ of a share, and under what conditions a spouse can become a member of a company in the division of property or by inheritance.