T The objective of this research is to examine whether modernization in taxation administration system that consist of organizational restructuring, improvement of business processes through the use of communications and information technology, the improvement of human resources and good governance implementation affect tax compliance. Respondents in this study as many as 219 individuals taxpayer in Semarang region. That respondents determined by using one of the non-probability sampling method, that is accidental sampling. Data in this research collected through questionnaries and analyzed by using multiple regression analysis method.The result of F test in this research showed that at least one of the modernization in taxation administration system’s variable that consisted of organizational restructuring, improvement of business processes through the use of communications and information technology, the improvement of human resources and good governance implementation affect tax compliance. While t test in this research showed that organizational restructuring, improvement of business processes through the use of communications and information technology positively affect tax compliance. Otherwise, the improvement of human resources and good governance implementation doesn’t affect tax compliance.