The origin of thermodynamically stable structures, that can define the structure-property relationship, remains a puzzling fundamental question in the field of intermetallic compounds. In this study, I have compared the stability of all these polymorphs of InPd3 by electronic structure calculations. A detailed structural description was put forward. Formation enthalpies were calculated and compared with the experimental findings. Moreover, the density of states (DOS) and crystal orbital Hamilton population (COHP) have been calculated and analyzed to get more insights into the stability and bonding nature of the different polymorphs of the titled compound.