As a sought-after and globally recognized expert in the field of international tax law, Michael Lang has dealt with many case studies in his long-standing research career, involving both private individuals and large companies.

Where double taxation agreements are in place, i.e., bilateral treaties between countries that regulate the taxation of income, Lang focuses on current examples from case law, studying recommendations and regulations from organizations like the OECD and the EU. Tax loopholes are a well-known problem, often used by international corporations to avoid paying income taxes in both countries. With his analyses and comprehensive knowledge, Michael Lang makes important contributions to finding practical solutions.