In the scientific literature the shadow economy is defined as a complex multifaceted set of phenomena, whose existence is determined by various factors and causes. The article examines the shadow economy through tax administration perspective. The author’s chosen object of the research encompasses economic activities, results of which such as tax evasion or concealment are not included in the official records. The shadow economy factors and reasons are economic, legal-administrative and social- psychological. Most of the time scientific research analyses the following shadow economy factors and causes: ▪ burden and rise of direct and indirect taxes and compulsory social insurance contribution; ▪ too stringent (or insufficient) legal and adm...