This study aims to analyze the effect of e-purchasing implementation on the reduction of fraud in government procurements in Indonesia. This study also analyzes the role of market access in mediating the effect of e-purchasing implementation on government procurement fraud. The study was conducted in all Procurement Service Units (ULP) of cities and districts in Indonesia. The questionnaires were sent electronically to 520 ULPs, but only 120 respondents could be used in this study. In analyzing data, the Structural Equation Modelling (SEM) was used with the support of the program Partial Least Square (WarpPLS 7.0) to examine the relationship between variables studied. The results show that the implementation of e-purchasing directly reduces the level of fraud in government procurements in Indonesia. Other findings of the study also indicate that the implementation of e-purchasing expands market access. The rise of market access in implementing e-purchasing will affect the level of frauds relating to procurement practices in the Indonesian government.