Technology Acceptance Model (TAM) is a model by Davis (1989) which was developed after improving his ideas previously-used in his doctoral dissertation that states the acceptance of the new technology of end-users can be formed by the aid of (1) Perceived usefulness and (2) Perceived ease of use. Technology Acceptance Model guided the ideas which defending that success of the information systems – technologically – can be achieved not only by technical and administrative features of the users but also by their personal characteristics, expectations and perceptions; user’s perception on various issues can affect this success as well.

This study examines the user factor in order to determine the success of Enterprise Resource Planning (ERP) systems, within the framework of TAM. 236 firms which use ERP softwares participated in the survey study. Results prove that perceived ease of use and perceived usefulness have a positive and statistically significant effect on ERP implementation success as well as on perceived organizational performance. These results reveal that all hypotheses have been supported and the study is coherent the findings of similar studies within the literature.

Keywords:Technology Acceptance Model, Perceived Usefullnes, Perceived Ease of Use, Enterprise Resource Planning Implementation Success, Perceived Organizational Performance