Governments are seeking to benefit from information technology by incorporating various government services online for the benefits of the citizen. The Malaysian government as part of its Multimedia Super Corridor (MSC) project introduced e-filing in 2006, which is the process of filing taxes using the Internet as one of the e-government services. This is an exploratory study to model the determinants of intention to use an Internet tax filing system. The authors used 4 variables as predictors or intention to use which were perceived usefulness, perceived ease of use, perceived risk, and facilitating condition. Data was collected from 100 respondents using non probability purposive sampling via a structured questionnaire. As hypothesized, perceived ease of use, perceived usefulness, and facilitating condition were positively related to intention to use. The findings show that perceived usefulness has the strongest influence on intention to use (ß = 0.341), followed by perceived ease of use (ß = 0.278) and facilitating condition (ß = 0.234). As hypothesized, perceived risk was negatively related (ß =-0.223) to intention to use indicating that users are concerned by the risk involved in filing taxes online. The regression results show that the four variables can explain 52.2% of the variation in intention to use which indicates good explanatory power. Understanding these factors can extend the knowledge, which can lead to better planning and implementation of e-Filing in Malaysia.