This study aims to find the determinants of the low interest in tax reform. Once the most likely factors mentioned in the bibliography were found, a questionnaire was applied to 206 participants. Five main factors were found: corruption, transparency, complexity, culture of disinterest and injustice. In response to a gap in the literature, empirical evidence if these factors could urge the low participation of society in relation to tax reform was sought. In search of patterns, a homogeneity analysis was performed correlating the collected information, systematizing the five main determinants of low interest in tax reform with the respondents' personal aspects such as age or income. The results show associations between factors and sample subgroups. This study contributes to the literature showing that there are factors to be worked on for greater engagement of society in relation to tax issues. It is also important to the contributor, once it brings into light the difficulties encountered by different social groups in relation to the topic. Additionally, 60% of the participants stated that, after having read the questionnaire, they felt motivated to search for information about the topic, which shows the society's need for more accessible information.