Who may be Karta of the Hindu Joint family ?

The karta is normally the senior-most male coparcener, usually the father, and after his death the eldest son. A junior coparcener, such as a younger son, may act as karta with the consent of the other coparceners.

Since the 2005 amendment to section 6 of the Hindu Succession Act made daughters coparceners by birth, the Delhi High Court held in Sujata Sharma v. Manu Gupta (2015) that the eldest daughter can be the karta. So a son, a daughter or the father may each be karta.