Abstract: This study attempted to investigate the influence of demographic factors on E-filing user satisfaction in Malaysia. The data were collected from randomly selected respondents using survey method from all states of Malaysia. The findings indicate that age and occupation affect tax prayers E-filing user satisfaction in Malaysia. However, race, gender and education were not significant factors in gauging user satisfaction on E-filing in Malaysia. Findings reveal that all respondents have committed to file their income taxes via E-filing next year despite of average user satisfaction rate with the mean of 3.62 out of 5 scale. The findings should assist Malaysian Inland Revenue Board in formulating new strategies on improving E-filing user satisfaction to achieve their goal of having 80% of Malaysian tax payers to use E-filing in future.