Tanaaz began her film career in 2000, with Hadh Kar Di Aapne. Her significant releases include Abbas Mustan's thriller 36 China Town, Sooraj Barjatya's Main Prem Ki Diwani Hoon, and Jugal Hansraj's Roadside Romeo. She has acted in several television serials including Ye Meri Life Hai and Kis Desh Mein Hai Meraa Dil. She also acted in the film Kaho Naa Pyaar Hai directed by Rakesh Roshan. She played Neeta, Amisha's cousin from New Zealand, in the film. She was noted for her role of a young Parsi girl trying to learn Hindi in Zabaan Sambhal Ke also starring Pankaj Kapoor. In 2009, she featured as a housemate in Bigg Boss (Season 3)