This paper extends the sufficient statistics approach to study international tax policy. International policy differs from domestic policies because i.) from the perspective of domestic policy makers the welfare weight on foreign agents lies below that of domestic agents, and ii.) behavioral...

We investigate how tax authorities use joint tax audits as a coordinated enforcement tool in cross-border transactions of a multinational firm. Joint tax audits aim to resolve potential tax disputes early, before such disputes escalate into costly and time-consuming resolution procedures that...

We study how the OECD transfer pricing guidelines aimed at curbing tax-motivated transfer pricing practices affect investment incentives. Our theoretical model integrates the different OECD's transfer pricing methods into the tax planning cost function of an MNC to evaluate how the choice of...

Analysis of the international network of double tax treaties reveals a large potential for tax avoidance. Developing countries are, on average, not more likely to suffer from tax revenue losses than other countries. Yet, this average masks the fact that several countries, such as Bangladesh,...

This paper presents a comparative empirical analysis of multinational profit shifting using two principal data sources: the OECD Country-by-Country Reporting (CbCR) statistics and ORBIS firm-level financial data. We begin by systematically examining structural and reporting differences across...

For the better part of the last decade, the global minimum tax, or Pillar Two, has dominated international tax policy discussions. Developing out of the Base Erosion and Profit Shifting (BEPS) Project at the Organisation for Economic Co-operation and Development (OECD), Pillar Two's main...

This paper evaluates the Multilateral Convention to implement Pillar I Amount A, released by the OECD in October 2023, and the alternative proposal of Art. 12B for tax treaties suggested by the UN, with a particular emphasis on the perspective of developing countries. We conduct a comparative...

Taxation of cross-border services has been identified as a high priority issue in the United Nations (UN) negotiations to establish a new global framework for tax. This paper analyses the defects of international tax rules as applied to services, and their exploitation by multinational...

Multinational enterprises are increasingly using offshore locations to pay lower taxes on their profits. This behavior has distortive effects on the global economy, as the concentration of multinational activities mirrors global tax patterns. In this paper, I exploit the OECD country-by-country...

In this paper, we attempt to estimate the tax revenues to be gained by the Member States of ATAF, WATAF, AU and the South Centre under the Amount A and an alternative stylized DST taxation regime. Our research demonstrates that the comparative revenue effects of the Amount A and DST taxation...

Border Carbon Adjustment Mechanisms (BCAMs) are becoming reality in the EU and elsewhere, and recur—in very different form—in U.S. legislative proposals. But they remain contentious, with features and differences that leave the underlying welfare rationale and implications unclear. Exploring...

Die Implementierung der globalen Mindeststeuer ist ein wichtiger Schritt zur Modernisierung des internationalen Steuerrechts. Sie hat aber auch Auswirkungen auf bestehende steuerliche Anreize, darunter die steuerliche Förderung von Forschung und Entwicklung. Diese werden von verschiedenen...

This policy brief reflects on an underexplored proposition: that bilateral tax treaties – particularly treaties involving (middle- and) low-income countries – should contain an expiration or sunset clause. The brief examines some reasons why it may be sensible for a low-income country to...

This comprehensive study delves into the tax reforms states adopt to safeguard their tax base and assesses potential conflicts with World Trade Organization (WTO) rules. The topic gains prominence due to the growing significance of cross-border transactions on contemporary states' tax revenues....