Even though grey economy has been around for a long time, it is a challenge the European Union still faces today. It generates from non-transparent operations of legal and natural persons regarding taxes. However, this is unacceptable for the state and the society, because its negative effects harm everybody. The extent varies in time and depends on numerous societal factors. In Slovenia, the Financial Administration deals with the issue of grey economy. The Administration's latest project "Use your head:demand a receipt!" tackles the issue on different levels.
In this thesis, we used a questionnaire to complete our empirical research. We wanted to determine what people think about the project and its application, which was created especially for this project. We were also interested to know whether taxpayers are aware of the possible consequences if they do not take the bill and the effect it can have on the extent of grey economy.
The interviewees take the bill in most cases, and many believe this is due to the marketing activities of this project. The extent of grey economy can be affected by the use of appropriate technology, i.e. mobile application which enables a faster exchange of information with the Financial Administration. The application has been appraised as a modern approach with added value to help manage this issue.
The use of appropriate technology in practice is more frequent and generates positive results. In our case, this can be seen in the amount of information exchanged through the application, which has ensured an overview of issued bills, their regularity, and control. The results of our questionnaire show what citizens think about the project and its application which offers the possibility of further study and improvement within the project.