The action-thriller, directed by Sriram Raghavan, also features Nawazuddin Siddiqui, Huma Qureshi and Radhika Apte in prominent roles.
The 'Main Tera Hero' star posted a picture of himself with Nawazuddin and captioned it, "'Badlapur' wrap-up."
Varun will be seen in a serious role for the first time in the Saif Ali Khan production.
The last three films of the 27-year-old actor were romantic-comedies.