He was also former Uday Shankar Professor at Ravindra Bharti University, Kolkata.

Professionally, Sunil Kothari was a chartered accountant.

[3][4] He died on 27 December 2020 due to a cardiac arrest caused by COVID-19 complications.

[7] He also received Sangeet Natak Akademi award in 1995 for overall contribution to the Indian classical dance.

[3][4] He has written 12 books on different forms of Indian classical dance and allied art-forms.