Kallat's work incorporates varied media including painting, large-scale sculpture installations, photography, and video art. He employs a bold and vivid visual language that references both Asian and European artistic traditions, along with popular advertising imagery that fuels urban consumerism. Kallat regularly exploits images and materials chanced upon around Mumbai's sprawling metropolis, affording his works an inherent spontaneity and a handcrafted aesthetic. He unites these various media through themes that endure within Kallat's work, such as the relationship between the individual and the masses. He references his own personal experiences and those of Mumbai's other inhabitants. His work speaks of both the self and the collective, fluctuating between intimacy and monumentality, and characterized by contrasting themes of pain, hope and survival.