This article starts from the reasonable assumption that the implementation of the base erosion and profit shifting (BEPS) project increases legal uncertainty in tax matters. The shift from the isolated and bilateral exercise of taxing jurisdiction to international tax coordination in the framework of the BEPS project is not accompanied by a corresponding global convergence in the exercise of legal remedies, which remain confined to their national boundaries.
In line with their previous research, the authors address hereby the right of taxpayers to an effective legal remedy under European tax law, taking into account the dialogue among Courts in respect of legal values contained in national Constitutions of European Union (EU) Member States, the EU Charter of Fundamental Rights and the European Convention on Human Rights.
The focus is on the right to an effective legal remedy in cross-border tax procedures, with special emphasis on mutual agreement procedures and mutual assistance. The authors suggest a two-tier mechanism with the involvement of taxpayers and tax authorities, which allows for an effective exercise of the right of defence and does not require major changes in the wording of treaty clauses modelled after Articles 25 and 26 OECD MC. Hopefully, something that other international institutions, including the United Nations, may consider for the future. The authors suggest filling this gap with their proposal for a BEPS Action 16.EC Tax Review