Understanding the main determinants of Internet banking adoption is important for banks and users; our
understanding of the role of users’ perceived risk in Internet banking adoption is limited. In response, we
develop a conceptual model that combines unified theory of acceptance and use of technology (UTAUT)
with perceived risk to explain behaviour intention and usage behaviour of Internet banking. To test the
conceptual model we collected data from Portugal (249 valid cases). Our results support some relationships
of UTAUT, such as performance expectancy, effort expectancy, and social influence, and also the
role of risk as a stronger predictor of intention. To explain usage behaviour of Internet banking the most
important factor is behavioural intention to use Internet banking.