He was born into a business family of Jalandhar (Punjab, India). He is the youngest in the family with three older sisters. Kundra did his schooling from Mayo College, Ajmer, Rajasthan and has graduated with an MBA degree which he acquired in the US. Being a model turned actor, as well as a businessman, Karan is the owner of an international call center. He runs a business of building infrastructural amenities for new buildings under construction, alongside his father. Their latest completed project is the 'Insignia Shopping Mall' in Jalandhar City (Punjab). He is still dating Kritika Kamra