In order to achieve a desired effect of tax legal interpretation, its linguistic mechanisms are frequently insufficient. Elements of paralinguistic interpretation are more and more often indispensable. It applies inter alia when domestic tax law regulations must be verified in the light of the EU tax law. However, the study depict interpretative problems regarding the institution of remuneration of excess payments, which is regulated in Polish tax law. Considerations presented in this article confirm that legal interpretation of tax law is a complicated process. It is important to establish correct system connection between the analyzed legal regulations and other provisions, often contained in other legal acts. Moreover, it seems necessary...