“…This result is not the same as the researches of Nikopour, Habibullah, Schneider, and Law (2009); ; and Ali and Bohara (2017) which find that higher FDI level lead to a decrease in the size of shadow economy. A huge number of previous studies also reveal that more corruption is one of the reasons which increases shadow economy size (Johnson, Kaufmann, & Zoido-Lobaton, 1998;Dreher et al, 2009;Huynh & Nguyen, 2019). However, there is a drawback point which needs to be discussed that these studies focus only on a specific country or using a general research sample data which are no distinction between countries by developed, developing, transition or non-transition.…”