Late Sushma Swaraj married fellow lawyer, Swaraj Kaushal on July 13, 1975, during the Emergency period. They were fellow advocates at the Supreme Court of India during the Emergency period. It was only after the Emergency that Swaraj joined the Bharatiya Janata Party.

Swaraj Kaushal served as a Member of the Parliament from 1998 to 2004. He also served as the Governor of Mizoram from 1990 to 1993. The couple also has a daughter, Bansuri who is a graduate from Oxford University and a Barrister at Law from Inner Temple.