Due to emotional factors, optimism, limited rationality, time limitation, judgment and social factors, management shows various behavioral biases that can have long-term negative effects on investors and the company. From the point of view of shareholders, tax avoidance is not only justifiable but also desirable. On the other hand, in order to achieve the economic development of the country, the government must be able to finance its current expenses from tax revenues. Meanwhile, previous research shows that due to reasons such as tax avoidance and tax evasion, tax revenues constitute a small percentage of the country's income sources. This makes studies related to tax avoidance and the factors affecting it more important. Based on this, the main purpose of this study is to Investigating the effect of optimism, myopia and overconfidence behavioral biases on tax avoidance.The statistical population of the research includes the companies listed in Tehran Stock Exchange. Accordingly, by applying some conditions and constraints, 95 companies (950 observations) were selected from the statistical population over the period 2013-2022 and the relationships between the research variables were analyzed using static panel data and logistic regression method. The results of the hypothesis test show that overconfidence and management myopia variables have a direct and significant relationship with the dependent variable of tax avoidance while optimism variable has the opposite effect on this variable.