This study attempts to answer two research questionsï¼› namely 1) What are the determinants that influence users acceptance of using MyKad as an e-commerce tool?, and 2) How do the determinants that influence the users acceptance of MyKad as an e-commerce tool fits into the modified Technology Acceptance Model TAM)? The research objectives are: 1) to identify the determinants of users acceptance of using MyKad as an e-commerce tool, 2) to investigate the relationships among the variables in the modified TAM for the users acceptance of MyKad as an e-commerce tool, 3) to determine the users awareness on MyKads features and benefits as an e-commerce tool, 4) to determine the users attitude on using MyKad as an e-commerce tool, and finally 5) to determine the users intention on using MyKad as an e-commerce tool. Since the development of the original TAM by Davis 1986), many studies have added different variables to the original TAM to make the model usable in the context of e-commerce. Based on the literature review, variables such as perceived trust, perceived credibility, perceived security, perceived privacy, awareness, and convenience were identified to be added into the original TAM to predict the users acceptance of using MyKad as an e-commerce tool in this study. The sample for this study consisted of MyKad owners who are able to support themselves financially. Using a survey method, data were collected from 351 respondents in three designated zones in Peninsular Malaysia northern zone, central zone and southern zone). The data was analysed to test a battery of thirteen hypotheses. A research framework was proposed and tested using factor analysis, Pearson correlation analysis, simple and multiple regression analysis techniques. Results showed that the modified TAM was found to be useful in explaining the users acceptance of using MyKad as an e-commerce tool in Malaysia.