In this article, the author analyses the tax treatment of benefit corporations, focusing on the Italian model (the first in Europe to address this issue). The article examines the ordinary tax regime and its contradictions, particularly regarding the principle applicable to the deductibility of expenses linked to altruistic purposes. An expanded interpretation of this principle is proposed to capture the hybrid nature of these entities. The article ends with a comparative review of the French and Spanish models, highlighting their weak points and future development perspectives.