The OECD proposal for
a global minimum tax (GloBE) is designed in a manner that could be conflictive
with investment treaties. This tension is even more severe in the context of
its adoption in the European Union through Directive (EU) 2022/2523 as EU Law
prima facie supersedes any other international law obligation adopted by Member
States. Yet, investors from jurisdictions not subject to GloBE liabilities (and
their investment vehicles) may try to seek remedies envisaged in investment
treaties and enforce them abroad. Would such claims succeed? How should the
Member States or the Union itself react to such undermining of EU Law (and the
very idea of the GloBE proposal) abroad? This article explores the robustness
of EU Law for adequately enforcing the minimum tax Directive (MTD) and
prospective challenges set to arise during arbitration, at the enforcement
stage, and after successfully recouping minimum taxation through a fruitful
collection of awarded damages.