Tabu and Irrfan Khan were the first choices to play Priyamvada and Jeetender Kaushik. Both declined the role, feeling that an older couple should be cast. Tabu thought more people would be shocked to see a woman older than herself getting pregnant on screen. She recommended Neena Gupta for the role.
Ayushmann Khurrana had to pick up three different dialects for his role in Badhaai Ho.
Biggest box office hit of Ayushmann Khurrana.
Badhaai Ho beat the box office collection of Thugs of Hindostan.
Ayushmann Khurrana's second release in 2 weeks after Andhadhun (5th Oct 2018)