In this study, the UNIZO (Union of the Independent Entrepreneurs in Flanders) outlined a quantified image of the phenomenon of non-Belgian entrepreneurs settled in Belgium

Nearly one in eight self-employed workers in Belgium do not hold Belgian nationality. This proportion rises to more than four in ten in the Brussels-Capital Region. An analysis of recent data from the National Institute for Social Security of the Self-Employed (INASTI) by the social insurance fund Acerta highlights these figures. The study also reveals differences in age, sector activity, and income between Belgian and non-Belgian self-employed individuals.