Electronic tax filing and payments system ETFPS) is a kind of foundational information technology application in the initial stage of Egovernment in developing countries. By introducing variables like system quality and perceived security, as well as decomposing important variables like social influence and perceived behaviour control, this study integrates Technology Acceptance Model (TAM) and Theory of Planned Behaviour (TPB) to explain the factors motivating the acceptance of ETFPS in Tanzania. Empirical outcomes demonstrate that system qual...