To test which competencies influences the readiness of Thai accounting students for the AEC, the following five main hypotheses are developed. Under the category “Ethical Competencies”, Suttipun (2014), Steelyana (2012), and Sinlarat (2011) found a relationship between this competency and the readiness for AEC. On the other hand, AFA (2013) and Pongtanee (2008) were unable to find any relationship between these variables. In view of the inconsistent findings in previous studies, the following hypothesis is proposed: