The purpose of this study is to find out the inheritance status of children outside of marriage and the division of inherits based on MK decision No. 46/PUU-VIII-2010. The results of the study show that because the out-of-marriage child and his biological father have a blood relationship, the Constitutional Court's ruling can be regarded as reinforcing the status of the off-marital child to acquire the right of inheritance from his biologic father. MK Decision No. 46/Law-VIII-2010 only deals with civil relations and does not regulate the inheritance. Therefore, the decision does not specify how much inheritance children can acquire outside of marriage.