Today's world has been built on the basis of competition and uncertainty, thus the role of facilitators, such as technology and information technology is undeniable. In this research developed Technology Acceptance Model to identify and prioritizing the factors affecting was used on formation of decision and behavior of customers in adoption of Internet banking of Post Bank. The statistical population consisted of all consumers of Post Bank in Tehran. Total of 400 questionnaires was distributed among community members; ultimately 384 usable questionnaires were coded and were entered into SPSS and LISREL software up to use the analysis of data. Results of factor analysis indicated proper fitting of the model and compliance of extracted factors with designed questions and explained variables in the model of the research. At the inferential statistics level also the results of using single sample T-test and ANOVA Friedman tests often were confirmed research hypotheses. Furthermore were showed the ease of application variable has the most influence on Internet banking adoption and next variables had been in order being applied, the security of private information, being pleasure existence of appropriate hardware and familiarity with Internet banking.
