The impact of international tax policy on firms’ real responses


Gschossmann, Emilia


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URN: urn:nbn:de:bsz:180-madoc-721613
Document Type: Doctoral dissertation
Year of publication: 2026
Place of publication: Mannheim
University: Universität Mannheim
Evaluator: Prof. Dr. Christoph Spengel
Date of oral examination: 2026
Publication language: English
Institution: Business School > ABWL u. Betriebswirtschaftliche Steuerlehre II (Spengel 2006-)
Subject: 330 Economics
Keywords (English): taxation , international tax policy , firms , real effects , global minimum tax , anti-tax avoidance , substance , AI
Abstract: As international tax policy has developed substantially in recent years, a central question emerges: how do firms respond to this evolving set of international tax measures? This dissertation contributes by addressing four distinct research questions. Chapter Two assesses how DEBRA and Pillar Two affect EU Member States' effective tax levels, both individually and jointly. Chapter Three examines how firms adjust their economic activity in response to substance-based exemptions in anti-tax avoidance provisions. Chapter Four analyses whether royalty deduction limitation rules reduce IP-driven profit shifting and through which channels firms respond. Chapter Five studies how tax incentives shape the spillover effects of U.S. AI investments on economic activity in Europe. Overall, the dissertation advances the understanding of how international tax policy shapes firm behavior, with important implications for the design of effective tax policy.




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