The article deals with the factors that affect the tax morale of the population of the Visegrad Four countries, i.e. Poland, Hungary, Slovakia and the Czech Republic. The evaluation of the answers of the respondents of the European Values Study to the question of whether they justify tax evasion serves as an indicator of tax morale. The authors work on the one hand with the frequency of answers expressing a complete rejection of fraud and on the other hand with average answers on a scale from 1 to 10. Respondents from Slovakia were found to be justifying tax fraud the most, and Polish and Hungarian residents agreed with tax evasion the least. Furthermore, the dependence of tax morale on gender, religion and satisfaction with the political s...