An explanation and exploration is given concerning issues pointedly concerned with the impacts of: underground economy on corruption; and the relationship with poverty level in developing economies. This relationship was the particular linkage such that quite often shadow economy and corruption are seen by researchers as twins, who need each other or fight against each other. Most countries of the world, including the United Kingdom, the United States, Canada, Netherlands, and Nigeria in particular, a large amount of government revenue are derived from taxes. This revenue inevitably shrinks through underground economy and corrupt practices. Therefore, shadow economy has been adjudged the most formidable attendant human practice that reduces the revenues owed to the government, consequently, shadow economy induced poverty in developing economies. Since 1990, problems of shadow economy have become a major concern for governments and policy makers, which therefore, caused increased attention among researchers, economic communities, and social scientists
Keywords: Corruption and Poverty in Nigeria, Developing Economies, Rising Underground Economy, Sam Agbi, Underground Economic Activities, and Eniola Agbi
