The growing importance of the use of smartphones and tablets on the consumer s everyday life has been focused on the studies on the Internet as an information channel, purchase and sale of tourism-related services. However, there is still a gap in research regarding the motivation and barriers that lead consumers to use financial mobile apps. The central hypothesis of this study is that the intention of relying on the use of mobile banking app has a key role in shaping the mobile banking usage intention. From the literature review, the most relevant backgrounds in deciding the use of mobile banking are identified and selected. Based on these, a structural model was proposed and eight hypotheses were formulated, listing the constructs used and their effect on the intention of trust and the adoption of mobile banking. All hypotheses were tested using structural equations based on data from a survey made with 272 users of financial mobile apps, resident in the city of Rio de Janeiro (RJ). The results confirmed that most of the assumptions made, and significant relationships, were observed between the construct confidence and the other addressed constructs, which significantly influence the intended use of banking services through mobile banking.