<p>Substantial modifications have been implemented to assess the punching shear strength for edge column-slab connections in the most recent versions of leading codes. The updated equations incorporate axial forces and moments transferred to columns from slabs, which significantly influence the punching resistance of these connections. Various essential design factors, including reinforcement ratio, concrete strength, size effect, and critical-section perimeter, were handled differently or even overlooked in several code guidelines. As a result, broad variations in predicted punching shear strength were observed when applying different code formulas. Thus, it is crucial to evaluate the design equations of various contemporary codes. Due to the similarity in estimated results, this study exclusively utilizes ACI-318, EC-2, and SP 63.13330.2018 to encompass a comprehensive range of estimates from highly conservative to unconservative. This paper focuses on analyzing the methodologies within these code guidelines, comparing the predicted punching shear resistance with existing experimental data, and ultimately developing effective models for predicting the punching shear of edge column-slab joints. Sixty-three samples from previous studies were selected for validation. To accurately forecast the punching shear, newly revised equations for ACI-318 and SP 63.13330.2018 are presented based on nonlinear regression analysis. The outcomes of the proposed equations align more closely to the experimental data rather than the results of the considered codes’ equations.</p>