"We have filed a case against him for not remitting the tax amount that he used to collect from organisers of his programme," an official said today.
However, despite repeated attempts, Sharma was not available for comments.
According to the official, the tax liability was around Rs 60 lakh.
Also, he was questioned yesterday in this connection and is likely to be called again, the official said.
"If he doesn't pay, then we will have to initiate proceedings against him," the official said.
The show, aired on Colors channel, is hosted by Sharma and often sees big Bollywood names using the platform to promote their upcoming films.