Mohnish Bahl debuted with the film Bekarar in a supporting role opposite Padmini Kolhapure and Sanjay Dutt but the film was a critical and commercial failure.

His subsequent release was Teri Bahon Mein, a remake of The Blue Lagoon with Ayesha Dutt, wife of Jackie Shroff, which was also a failure.

His only commercial success in a leading role was Purana Mandir though it was considered a B grade film.

He is the only son of noted actress Nutan and Lt. Cdr.

Rajnish Bahl,[3] and is a prominent member of the Mukherjee-Samarth family.