Cold formed steel materials help engineers to develop more efficient and cost-effective structural systems because it has superior characteristics such as high strength-to-weight ratio, non-corrosiveness, and modularization etc., Cold-formed steel castellated beam is currently gaining popularity in applications related to civil engineering. The incorporation of stiffeners has emerged as an effective solution to enhance the overall structural behaviour. In this paper, a comparative analysis of cold form castellated beams with and without stiffeners, focusing on stiffness, load-bearing capacity, deflection, stress distribution, and failure modes. Multiple stiffener patterns, such as vertical, and diagonal, arrangements, are examined to identify the optimal configuration. Finite element analysis (FEA) software ‘ABAQUS’ is used to model and simulate the behaviour of the beams, and numerical validation is performed using experimental results from the literature.