According to the law a birth is require to be registered within 90 days of the occurrence and a Death within 30days, and that event Must be occurred within the borders of mainland Tanzania.However, the law allows for late registration. The duty to register a birth lies on the following:
Kulingana na sheria kizazi inatakiwa kuandikishwa ndani ya siku 90 tangu kutokea kwake na kifo ndani ya siku30,na Tukio hilo Lazima liwe limetokea ndani ya mipaka ya Tanzania Bara.Pamoja na takwa hili sheria inaruhusu usajili kufanyika nje ya muda huu.Wajibu wa kusajili kizazi ni kama ufuatao: