»German Special Operating Income as Hybrid Mismatch in Light of International Taxation«: The modern economic area is hallmarked by fragmentary harmonized tax laws causing divergent legal consequences for identical circumstances. In this context, the thesis analyses to what extent German special operating income erodes the principles of transparency, competition, efficiency and tax justice. Under consideration of supranational initiatives, anti-abuse tax regulations are critically examined, regulatory loopholes are revealed and crucial measures are derived.