Corrosion of rebars is one of the predominant factors for early deterioration of structures. It highly reduces the size of the strand, changes the mechanical properties of steel and also influences the cracking of the surrounding concrete. It also has a huge impact on the bond at the interface of rebars and concrete. Pre-stressed concrete structures show less cracking and sudden failure as compared to reinforced concrete structures. Hence, corrosion in pre-stressed concrete structures is a critical safety issue. Only few experimental studies are available in the literature which focuses on the structural behavior of pre-stressed beams subjected to corrosion. In this paper, a numerical model of corroded pre-stressed beams using non-linear finite element analysis is developed. Discrete approach is adopted to model the pre-stressing strands. A comparative study considering an un-corroded and a corroded beam is implemented to the model. It shows that the un-corroded beam exhibits a relatively more ductile behavior as compared to the corroded beam and failure in both the cases is due to the crushing of the concrete. The results obtained from the analysis are validated with the existing literature. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.