Öz
Exheredation is a testamentary disposition that gives the legator the right to deprive the heir of their hereditary portion fully or partially. In Turkish/Swiss legal systems, there are two types of exheredation, protective exheredation and criminal exheredation. In the case of significant violation of the obligations arising from family law, certain conditions must be met for exheredation, namely, that the violation of the obligations arising from the family law was significant, that the violation was unlawful, and that the heir with the hereditary portion is culpable. In order for the failure to fulfill to a significant extent the obligations arising from family law to be legally considered, apart from the fact that the act of the heir objectively violates the obligations arising from the family law, it is necessary for family ties with the culpable heir be cut off voluntarily due to this act. Pursuant to Article 510 of the TCC, the heir can be debarred from the inheritance if they have not substantially fulfilled their obligations arising from family law toward the legator or the family members of the legator. Since the reason for debarment must be clearly indicated for exheredation, the use of general and abstract reasons in the disposition is not sufficient for debarment.