Abstract：Based on the upper echelons theory and planned behavior theory, using the sample of 2008-2018 Shanghai and Shenzhen A-share private listed companies, this study explores test the impact of executive overconfidence on corporate tax avoidance, as well as the moderating roles of product market competition and political connection empirically. The results show that there is a significantly positive relationship between executive overconfidence and corporate tax avoidance, that is, the more overconfident the manager, the higher the degree of corporate tax avoidance. Furthermore, the degree of product market competition and political connection has strengthened and weakened the aforementioned positive relationship, respectively.
