This research contributes to additional understanding of TAM's validity in Internet banking acceptance. Although some user profile variables have been examined in technology acceptance research, there has been little research investigating the new roles of these profile variables in the dynamic technology environment. The objective of this study is to profile adopters of Internet banking system and evaluate the impacts of these profiles on technology acceptance. We are interested in exploring how sex, age and IT competency influence Internet banking system use. TAM was applied to guide the evaluation of Internet banking acceptance behaviors.