Multilateral Instrument

Multilateral Instrument
Name	Multilateral Instrument
Long name	Multilateral Convention to Implement Tax Treaty Related Measures to Prevent Base Erosion and Profit Shifting
Date signed	7 June 2017
Location signed	Paris
Date effective	Varies by pair of parties
Condition effective	Ratification by contracting jurisdictions
Parties	100+ jurisdictions (varies)
Depositor	Organisation for Economic Co-operation and Development
Language	English, French

Multilateral Instrument

The Multilateral Instrument is an international treaty designed to modify bilateral tax treaties to counteract base erosion and profit shifting. It links into a network of instruments developed after the Global Financial Crisis (2007–2008) and the Base Erosion and Profit Shifting (BEPS) Project led by the Organisation for Economic Co-operation and Development and the G20. The Instrument furnishes a streamlined mechanism for jurisdictions to update hundreds of bilateral conventions without renegotiating each one, aligning treaties with measures from the BEPS Action Plan and related standards from bodies such as the United Nations tax committees.

Background and Purpose

The Instrument emerged from global concern over tax avoidance and profit shifting highlighted by investigations like LuxLeaks, Panama Papers, and Paradise Papers, and policy responses from forums including the G20 Finance Ministers and Central Bank Governors and the OECD/G20 Inclusive Framework on BEPS. Its purpose is to implement treaty-based measures such as hybrid mismatch neutralization, treaty abuse prevention, and dispute resolution enhancements derived from BEPS Actions like BEPS Action 6 and BEPS Action 14. It seeks coherence with existing frameworks like the Convention on Mutual Administrative Assistance in Tax Matters and standards promulgated by the International Monetary Fund and World Bank.

Development and Negotiation

Negotiation of the Instrument was coordinated by the OECD with inputs from member and non-member jurisdictions, including participants from European Union member states, United States, China, India, Brazil, South Africa, and treaty partners across Latin America, Africa, and Asia-Pacific. Drafting rounds involved technical experts from national revenue authorities such as the United Kingdom HM Revenue and Customs, Internal Revenue Service, Canada Revenue Agency, Australian Taxation Office, and the French Direction générale des Finances publiques. Key milestones included endorsement at OECD Ministerial Council Meetings and adoption by the OECD Council, followed by signature events in Paris where representatives of sovereign states and tax administrations signed the final text.

Key Provisions and Mechanisms

The Instrument contains provisions to modify bilateral treaties through mechanisms like the principal purposes test inspired by BEPS Action 6, special measures for double non-taxation reflecting BEPS Action 2 on hybrid mismatch arrangements, and mutual agreement procedure improvements aligned with BEPS Action 14. It permits reservations and options enabling jurisdictions to select rules similar to examples in the Model Tax Convention on Income and on Capital and to adopt selective treaty anti-abuse clauses akin to those in statutes such as the United States Internal Revenue Code anti-abuse regimes. The Instrument also introduces arbitration language to resolve treaty disputes consistent with models promoted by the International Centre for Settlement of Investment Disputes and the Permanent Court of Arbitration.

Signatory Participation and Implementation

Participation requires signature and ratification, accession, or domestic legislative adoption by signatory states and jurisdictions. Early signatories included members from the European Union, Norway, Switzerland, and other OECD and non-OECD jurisdictions. Implementation interacts with domestic systems like statutes governed by the Constitution of India, German Basic Law, or the United States Constitution where treaty incorporation rules differ. For many bilateral treaty pairs, the Instrument's provisions become effective only when both treaty partners have completed necessary constitutional or parliamentary ratification procedures, creating a patchwork of entry-into-force dates similar to multilateral conventions such as the Vienna Convention on the Law of Treaties.

Impact on International Tax Treaties

The Instrument has accelerated modernization of thousands of bilateral tax treaties, influencing treaty practice among investors and multinational enterprises such as those in the Fortune Global 500 and affecting cross-border structures involving jurisdictions like Ireland, Luxembourg, Netherlands, Singapore, and Switzerland. It has altered dispute resolution dynamics at forums like the International Tax Review discussions and influenced arbitration outcomes in venues including the Permanent Court of Arbitration. By embedding anti-abuse and clarity provisions, the Instrument has been cited in tax rulings and litigation in national courts like the Supreme Court of the United Kingdom, Federal Court of Australia, and appellate bodies across Canada and New Zealand.

Criticisms and Legal Challenges

Critics argue the Instrument may impinge on national tax sovereignty and complicate treaty networks by adding layers of reservation and optionality similar to disputes seen in European Court of Justice litigation over tax directives. Civil society organizations and investigative journalists referencing OECD processes have raised concerns about transparency and participation of low-income countries. Legal challenges have surfaced regarding constitutional compatibility in jurisdictions invoking treaty supremacy doctrines in bodies like the Constitutional Court of South Africa and the Supreme Court of India. Academic commentary from scholars affiliated with institutions such as Harvard Law School, London School of Economics, University of Oxford, Universität zu Köln, and University of Melbourne has debated the effectiveness of principal purposes tests versus bright-line anti-abuse rules, while practitioner analyses in outlets like Tax Notes International and International Bureau of Fiscal Documentation highlight implementation complexity.

Category:International tax law