Everyday, there are new announcements in the media regarding pile up debts, heavily indebted countries and cost-cutting packages. Basically, in this context private corporate sponsorship is likely to assume a key role, since especially nongovernmental organizations (NGOs) support the state in many different fields. As a result, this contributes de facto to the control of household debts. Thus it is not surprising that the legislator has cancelled some fiscal provisions for such nongovernmental organizations, since the activities of such institutions often substitute the areas of responsibility of entire government institutions. Therefore the primary aim of this thesis is to shed light on the provisions concerning tax on profits of such nongovernmental organizations. In general, the first part will be dealing with the legal regulations regarding the attainment of a non-profit status as well as with the general fundamental structure with respect to the law of common public interest. In addition to this the various types of economic activities will be elaborated, and the impact on the legal non-profit status of these institutions will be presented. In particular, the practice-oriented realm regarding the boundary of non-profit blight respectively marginal permitted activities will be analysed throughout this section. Moreover, the second part of this thesis will be primarily focusing on the provisions concerning tax on profits. Thus the tax reus on income from capital assets and special characteristics regarding the application for nongovernmental organizations will be discussed in depth throughout this section. Finally, the concluding chapter will be dealing with special provisions for limited taxable nongovernmental organizations as well as with property tax.