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Fresh Ideas Emerge for New EU Budget Levies

The European Parliament is considering new EU own resources that would tax online gambling, speculative real estate investment, and large companies through a turnover-based CORE contribution. The proposals expose significant legal and institutional constraints, including unanimity requirements, subsidiarity limits, especially for gambling, and unresolved questions about where digitally delivered activity should be taxed. Academic analysis warned that CORE could lead to multiple counting within corporate groups and impose tax liabilities that are disconnected from profitability, raising concerns about neutrality, legal characterization, and enforceability.  

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MNE Roadkill? Why Pillar 2 Survives With or Without the U.S.

  • By Poonam Khaira Sidhu
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This paper evaluates the durability of the OECD’s Pillar Two global minimum tax regime in the absence of U.S. participation. It argues that structural incentives and coordinated implementation by other jurisdictions may sustain the regime regardless of U.S. policy choices.

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The Role of Residence-Based Taxation in Business Income Taxation

  • By Yoshihiro Masui
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This paper revisits the role of residence-based taxation in allocating taxing rights over business income in a globalized economy. It evaluates how residence principles interact with source-based rules and modern challenges such as digitalization.

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Citation: Bulletin for International Taxation 2026 (Volume 80), No. 4/5.

Arthur Cockfield's Digital Economy: A Retrospective Analysis

  • By Shu-Yi Oei
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This paper evaluates the evolution of digital economy taxation through the lens of Arthur Cockfield’s scholarship. It examines how early conceptual frameworks anticipated current challenges in taxing digital business models. The analysis is particularly relevant to ongoing OECD reforms and debates over digital services taxation.

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Citation: Forthcoming, Canadian Tax Journal (Special Issue: Tax Sovereignty in a Digital and Divided World: A Tribute to Arthur Cockfield)

Taxing Data as the New Oil

  • By Ana Paula Dourado
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This article explores the conceptual and practical challenges of taxing data as an economic asset within the international tax framework. It considers whether existing rules can capture value generated through data-driven business models and proposes potential reforms.

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Can Sales Destinations Reclaim Taxing Rights on Profits from Cross-Border Sales of Goods on Digital Platforms?

  • By Fei Gao
  • By Richard Krever
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This article examines whether destination countries can assert taxing rights over profits generated through digital platform-based cross-border sales. It analyzes evolving international tax principles, including destination-based taxation and the shift away from traditional source rules. The paper is particularly relevant to ongoing reforms addressing digital economy taxation and allocation of taxing rights.

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Citation: Fei Gao and Richard Krever, ‘Can sales destinations reclaim taxing rights on profits from cross-border sales of goods on digital platforms?’ [2025](3) British Tax Review 363-385.

The Largest Tax Fraud?

  • By Reuven S. Avi-Yonah
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This paper evaluates large-scale international tax avoidance structures and questions whether certain widely used arrangements effectively amount to systemic tax fraud. It focuses on enforcement gaps in cross-border taxation and the role of governments in enabling or constraining aggressive tax planning. The analysis contributes to ongoing debates over transparency, compliance, and the limits of current international tax enforcement frameworks.

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International Taxation and the Frustrations of Formulary Apportionment Estimation

  • By Richard Krever
  • By Kerrie Sadiq
  • By Devika Bhatia
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This article evaluates the practical and theoretical difficulties of implementing formulary apportionment in international taxation, particularly the challenges of estimating appropriate allocation factors across jurisdictions. It contributes to ongoing debates about alternatives to arm’s length pricing in a BEPS-influenced environment.

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The Awkward Implications of an Undertaxed Profits Rule

  • By Chidozie Chukwudumogu
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This paper analyzes the unintended consequences of the Undertaxed Profits Rule under Pillar Two, including compliance burdens, allocation distortions, and enforcement complexity. It raises concerns about how the rule operates in practice across jurisdictions with differing tax regimes.

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Should I Stay or Should I Go? The Impact of Taxation on Canadian Inter-Provincial Migration

  • By Adam Lavecchia
  • By Robert McKercher
  • By Alisa Tazhitdinova
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This study examines how differences in regional tax policies influence migration decisions within Canada, highlighting behavioral responses to subnational tax variation. The findings have broader implications for tax competition and mobility in multi-jurisdictional systems.

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Quantifying Climate Damages When Regions Trade: A Structural Gravity Approach

  • By Jeanne Astier, Geoffrey Barrows, Raphael Calel, and Hélène Ollivier
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This paper evaluates how international trade transmits climate-related economic damages across regions, using a structural gravity framework. It provides insight into cross-border externalities and raises important considerations for tax and policy instruments addressing climate change.

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