Identifying the social psychological factors affecting the behavior of tax non-compliance of taxpayers

Economic factors explain part of the tax behavior of taxpayers. The purpose of this research is to discover the social psychological factors affecting the tax non-compliance behavior of taxpayers. The current research is conducted with a qualitative approach and grounded theory method. The research tool is semi-structured interviews. Using grounded theory, data is collected by asking semi-structured questions and in-depth interviews with nine participants. For data mining, the data is coded, then entered into the software (Max QD 1-2021) and analyzed by theoretical method. Based on the findings of the Research, the variables affecting tax non-compliance behavior include: public information (poor tax knowledge and opportunity non-compliance), perception of corruption, negative attitude, negative subjective norms, perceived behavioral control non-compliance, intention non-compliance, Compliance behavior includes ambiguity in definition and perception of low tax compliance.Based on the findings of the research, the level of tax knowledge is weak. Types of perception of corruption: including perception of public corruption, macro corruption and micro corruption, macro and micro tax corruption, the level of perception of which decreases in order. Attitudes and subjective norms are negative towards tax compliance. The potential of the perception of corruption on tax compliance behavior is high.Contribution: One of the main reasons that governments in developing countries face problems in tax collection is the non-compliance of taxpayers. By informing and implementing anti-corruption policies, the government can increase the level of tax knowledge and public trust, promote positive attitudes and beliefs, and improve the level of taxpayers' compliance.