Taxation-Transnational Commons^™

How The U.S. Constitution Shapes International Tax Law: Instrument Choice In Tax Agreements, Noam Noked, Young Ran (Christine) Kim, Reuven Avi-Yonah

Articles

The U.S. Constitution’s Treaty Clause, which requires Senate approval by a two-thirds vote for treaties, has significantly influenced the development of international tax law. This Article examines the implications of Senate supermajority requirements on bilateral and multilateral tax treaties and agreements, alternative instruments, relevant international tax standards, and global tax governance.

Historically, tax treaties have been approved exclusively as Article II treaties requiring Senate approval. The difficulty of entering into treaties with the United States has influenced the instrument choice and design of U.S. and international tax standards. To address this challenge, several U.S. and international tax reforms have employed …

The Forgotten Weapon: Section 891 And The Origins Of U.S. Retaliatory Tax Policy, Reuven S. Avi-Yonah, Gianluca Mazzoni

Articles

The original version of the One Big Beautiful Bill Act (P.L. 119-21) included section 899, which would have imposed retaliatory taxes on individuals and corporations from countries that apply “discriminatory or extraterritorial” taxes to U.S. corporations, defined specifically to include digital services taxes and the undertaxed profits rule of pillar 2.

However, on June 26 Treasury Secretary Scott Bessent announced that a compromise was reached on the UTPR, and as a result, section 899 was removed from the OBBBA. Now that section 899 is gone, section 891 is the most important part of the United States’ legislative armory against “discriminatory …

From Relic To Relevance, The Resurgence Of Tariffs, Reuven S. Avi-Yonah, Doron Narotzki, Tamir Shanan

Law & Economics Working Papers

Modern legal scholarship has largely relegated tariffs to economic analysis, overlooking their legal and policy significance. This article challenges that view by examining tariffs as a potential pillar of fiscal policy, exploring their viability as a revenue source alongside or in place of traditional income and corporate taxation. While historically central to U.S. government funding, tariffs diminished in importance with the rise of income taxation and trade liberalization. However, their recent resurgence as a tool for trade protection raises broader questions about their role in national economic strategy. This article critically assesses the feasibility of a tariff-based tax system, drawing …

Should The Oecd Accept Gilti As A Valid Iir?, Reuven S. Avi-Yonah

Articles

On June 26 Treasury Secretary Scott Bessent announced a deal with the G7 to accept the global intangible low-taxed income tax as a valid income inclusion rule tax and not apply the undertaxed profits rule to U.S. multinational enterprises. Bessent said a “joint understanding” among the United States and other countries will be announced soon. “OECD pillar 2 taxes will not apply to U.S. companies, and we will work cooperatively to implement this agreement across the OECD-G20 inclusive framework in coming weeks and months,” Bessent wrote. Soon after, Senate Finance Committee Chair Mike Crapo, RIdaho, and House Ways and Means …

Proposed Cloud Services Sourcing Rule: The Right Direction, Reuven Avi-Yonah, Jeffery M. Kadet, Karen Sam

Articles

This past January, in conjunction with the issuance of a final regulation (T.D. 10022) that treats income from defined cloud transactions as income from services, Treasury and the IRS released a proposed regulation (REG-107420-24) on the sourcing of that income. In 2019 a Treasury official had asked the tax community for feedback on whether specific cloud transaction sourcing rules were needed, and the preamble to a 2019 proposed regulation asked for comments on “administrable rules for sourcing income from cloud transactions in a manner consistent with sections 861 through 865.” The feedback was “split almost evenly with regard to whether …

No Trade Wars Without Taxation -Who's To Blame, And What Comes Next?, Domenico Imparato, Reuven S. Avi-Yonah, Doron Narotzki

Law & Economics Working Papers

As tariff policy once again shapes U.S. trade strategy, this article makes a foundational claim: trade wars are, at their core, tax wars. Against the backdrop of escalating economic tensions with the United States’ trade partners, this article argues that tariffs cannot be understood apart from the fiscal architecture that sustains them. What appears to be protectionism often masks deeper structural asymmetries in the U.S. tax system.

The discussion proceeds through three interrelated dimensions: reshoring production, promoting fair trade, and raising revenue. In each, the interaction between tariffs and the tax system reveals deeper distortions. U.S. export mechanisms such as …

Retaliatory Taxation, Reuven S. Avi-Yonah

Law & Economics Working Papers

This paper discusses the Trump administration's potential use of section 891 and pending legislation to apply retaliatory taxes to foreign countries that impose "discriminatory or extraterritorial" taxation on US multinationals.

Was The Niit A Treaty Override?, Reuven S. Avi-Yonah

Law & Economics Working Papers

Three court decisions have recently addressed the interaction of the Net Investment Income Tax (NIIT) and US tax treaties. The issue was whether the treaty provided an independent basis for crediting a foreign tax against the NIIT, because no such credit is available under the Code. First, in Toulouse, the Tax Court held that there was no treaty based credit. Second, in Christensen, the Court of Federal Claims held that a treaty-based credit was available, distinguishing Toulouse. Third, in Bruyea, the Court of Federal Claims issued a broader opinion that allowed the credit. Importantly, Bruyea addressed an issue that was …

Should The United States Abandon Citizenship-Based Taxation?, Reuven S. Avi-Yonah

Law & Economics Working Papers

President Trump proposed during the election campaign to end the "double taxation" of American citizens living overseas. To which the answer is, what double taxation? Americans living overseas already benefit from three significant provisions that in most cases prevent any double taxation, and because of these most of them do not have any U.S. tax liability. Those who do are typically wealthier, derive income from investments or from high wages, and are not subject to foreign tax because they live in tax havens or in countries that do not tax rich immigrants on foreign source income, and they do not …

Eliminating Qbai - One Step Forward, Two Steps Back?, Reuven S. Avi-Yonah

Articles

In this installment of Reflections With Reuven Avi-Yonah, Avi-Yonah explains what makes an effective U.S. tax regime and uses those attributes to evaluate the One Big Beautiful Bill Act. There is plenty to criticize about the One Big Beautiful Bill Act (OBBBA, P.L. 119-21), signed into law by President Trump on July 4. It increases the deficit by about $4 trillion when the interest costs from the additional borrowing are included, and by about $5.5 trillion if its provisions are made permanent in 2029, like the Tax Cuts and Jobs Act provisions were in 2025. It is distributionally skewed to …

Is The Obbba Compatible With Pillar 2?, Reuven S. Avi-Yonah

Articles

In this installment of Reflections With Reuven Avi-Yonah, Avi-Yonah compares House and Senate sections of the One Big Beautiful Bill Act and examines the potential effect on international tax relations. On May 22 the House of Representatives passed the One Big Beautiful Bill Act (OBBBA). The House version of the OBBBA extended the Tax Cuts and Jobs Act tax cuts but did not significantly change its international provisions. It did, however, contain proposed section 899, which would have imposed enhanced taxation on residents and corporations from countries that have “discriminatory or extraterritorial taxes,” defined to include primarily the undertaxed profits …

Us Policy And Pillar 2: The Evolution Of Us Tax Policy Toward Oecd Pillar 2 And Its Global Implications, Reuven S. Avi-Yonah

Articles

This paper analyzes the United States’ evolving position on OECD Pillar 2, focusing on the Trump administration’s initial rejection and subsequent negotiations to exempt US multinationals from the Undertaxed Profits Rule (UTPR). It examines the legislative and diplomatic strategies that led to international acceptance of GILTI as a valid IIR. The analysis concludes that the resulting compromise preserves US tax sovereignty while maintaining the global framework’s integrity.

A Global Wealth Tax?, Reuven S. Avi-Yonah

Articles

Mitt Romney famously said during his 2012 presidential campaign that “corporations are people.” Mindy Herzfeld’s column comparing the proposed 2 percent global wealth tax on billionaires with the corporate minimum tax (pillar 2) raises the opposite question: Are people like corporations for tax purposes? I would say no, for several reasons.

Crypto And The Exit Tax, Reuven S. Avi-Yonah

Articles

Robert Goulder has devoted one of his excellent columns to the fascinating case of “Bitcoin Jesus.” As explained by Goulder:

Another billionaire was in the news recently for reasons that relate to taxation, although it’s doubtful he will be accused of much virtue. The man known internationally as “Bitcoin Jesus” got himself arrested in Spain on April 27. He now faces extradition to the United States, where an eight-count criminal tax indictment awaits him. Bitcoin Jesus is coming home.

This is a far cry from the Jesus born in Bethlehem who once said that it was easier for a camel …

Sourcing Derivatives: Time To Reverse The Rule?, Reuven S. Avi-Yonah

Articles

In their excellent Tax Notes article on the application of withholding taxes on derivatives, Lorenz F. Haselberger and Michael B. Shulman write that:

A taxpayer entering into a derivative may derive income of a kind that is different from the kind of income that would have been realized had the taxpayer instead acquired the underlying asset, resulting in different U.S. withholding tax treatment.

For example, when a foreign taxpayer enters into a swap referencing an equity security or interest rate, amounts it receives that correspond to dividends or interest generally are characterized as periodic payments on a financial contract rather …

Once More: Digital Services Taxes Should Be Creditable, Reuven S. Avi-Yonah

Articles

In a previous column, I argued that digital services taxes should be creditable as in-lieu-of taxes under section 903. A new analysis by Jane Gravelle sheds further light on this topic but does not change the outcome.

Gravelle makes three arguments against the creditability of DSTs. First, she argues that the whole concept underlying both pillar 1 and DSTs (allocating value to market jurisdictions) is wrong, and therefore they cannot be justified. Second, she argues that DSTs are passed on in full to consumers and that this precludes creditability. Finally, she argues that DSTs are discriminatory excise taxes on U.S. …

The Usefulness Of Pillar 1, Reuven S. Avi-Yonah

Articles

Many commentators have declared that pillar 1 of the base erosion and profit-shifting project 2.0 is dead. By its explicit terms, the multilateral tax convention (MLC) implementing pillar 1 cannot go into effect this year without ratification by the United States, and the chances of the United States ratifying it before or after the election are low given massive opposition in Congress. If the MLC does not go into effect by December 31, 2024, over 30 countries will likely impose digital services taxes on January 1, 2025, making the whole pillar 1 project (which was aimed at preventing the spread …

Limitation On Benefits Or Principal Purpose Test? Part 2, Reuven S. Avi-Yonah

Articles

Part 1 of this column discussed the choice between the limitation on benefits and principal purpose test (PPT) and the history of the LOB in U.S. tax treaty policy.

How effective is the LOB article in U.S. tax treaties, now that it no longer includes the PPT from the original U.S. LOB?

Limitation On Benefits Or Principal Purpose Test? Part 1, Reuven S. Avi-Yonah

Articles

An interesting recent column by Tax Notes’ Lee Sheppard criticizes the principal purpose test (PPT) that was adopted as a minimum standard in the OECD’s base erosion and profit-shifting project 1.0 and has since been incorporated into many tax treaties through the multilateral instrument. Sheppard explains:

Readers will recall that BEPS 1.0 had a set of minimum standards for participating countries, one of which was a treaty amendment to cement the purpose of the treaty to prevent both double taxation and double nontaxation. Participants could choose between a seemingly simple, subjective principal purpose test (PPT) and a complicated but objective …

Has Cost Sharing Outlived Its Usefulness?, Reuven S. Avi-Yonah

Articles

In her thoughtful column on cost sharing, Mindy Herzfeld explains the history of costsharing arrangements (CSAs) going all the way back to 1966, and then asks several questions, including: “Should the existing CSA regs be scrapped in favor of another regime, or simply eliminated as a choice for taxpayers?”

Pillar 2 And Specific Benefits For Multinationals, Reuven S. Avi-Yonah

Articles

In a recent column, Tax Notes’ Martin Sullivan asked whether a country that wishes to neutralize the effect of pillar 2 on its investment incentives can get around the OECD prohibition on a multinational enterprise receiving what amounts to a refund of the pillar 2 tax it pays to that country. He writes that:

It would make a mockery of the pillar 2 taxation system if an investment hub imposed a 15 percent minimum tax on a company — thereby shielding profit in that hub from other jurisdictions’ pillar 2 tax — and then, through a separate mechanism, unconditionally returned …

Rethinking Taxing Excess Profits, Reuven S. Avi-Yonah, Tamir Shanan

Articles

This article discusses the application of excess profit taxes (EPTs, also referred to as windfall taxes) that have gained renewed interest and popularity over the past several years. The revival of these windfall taxes gained renewed interest following the COVID-19 outbreak, which led to a sharp price increase in corporate revenues of medical equipment and within pharmaceutical industries. However, the revival of such taxes was also used following the recent rise in energy prices mainly in Europe, leading to a sharp increase in corporate revenues of energy corporations and the recent surge in borrowing interest rates that was not accompanied …

Tax Harmony: The Promise And Pitfalls Of The Global Minimum Tax, Reuven Avi-Yonah, Young Ran (Christine) Kim

Michigan Journal of International Law

The rise of globalization has become a double-edged sword for countries seeking to implement a beneficial tax policy. On one hand, there are increased opportunities for attracting foreign capital and the benefits that increased jobs and tax revenue brings to a society. However, there is also much more tax competition among countries to attract foreign capital and investment. As tax competition has grown, effective corporate tax rates have continued to be cut, creating a “race-to-the-bottom” issue.

In 2021, 137 countries forming the OECD/G20 Inclusive Framework on BEPS passed a major milestone in reforming international tax by successfully introducing the framework …

A New Framework For Digital Taxation, Reuven S. Avi-Yonah, Young Ran (Christine) Kim, Karen Sam

Articles

The international tax regime has wide implications for business, trade, and the international political economy. Under current law, multinational enterprises do not pay their fair share of taxes to market countries where profits are generated because market countries are only allowed to tax companies with a physical presence there. Digital companies, like Google and Amazon, can operate entirely online, thereby avoiding market country taxes. Multinationals can also exploit existing tax rules by shifting their profits to low-tax jurisdictions, thereby avoiding taxes in the residence country where their headquarters are located.

Recently, a global tax deal was reached to tackle these …

Taxation And Business: The Human Rights Dimension Of Corporate Tax Practices, Reuven S. Avi-Yonah

Book Chapters

The response of both developed and developing countries to global developments has been first, to shift the tax burden from (mobile) capital to (less mobile) labour, and second, when further increased taxation of labour becomes politically and economically difficult, to cut government services. Thus, globalization and tax competition lead to a fiscal crisis for countries that wish to continue to provide those government services to their citizens, at the same time that demographic factors and increased income inequality, job insecurity and income volatility that result from globalization render such services more necessary. This chapter argues that if government service programs …

Lecture In Human Rights: Tax Policy, Global Economics, Labor And Justice In Light Of Covid-19, Reuven S. Avi-Yonah

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International Tax Law has extensive ramifications on the wealth gap between wealthy developed nations and poor developing nations. This divide in prosperity has been made clear again in the global response to the COVID-19 pandemic. Developing nations are currently ill-equipped to adapt to, and regulate, an equitable system of taxation on a domestic level. A further challenge is the difficulty of ensuring that foreign investors, especially multinational corporations, are able to comply with tax regulations. Developed nations such as the United States and members of the European Union must continue to work with developing nations to reduce tax evasion and …

The Ingenious Biden Tax Plan, Reuven S. Avi-Yonah

Articles

In this article, the author considers the Biden administration’s Made in America Tax Plan, which would overhaul the corporate and international tax provisions of the Tax Cuts and Jobs Act and represents a long-overdue effort to more fairly tax U.S.-based multinationals.

Federalizing Tax Justice, Reuven Avi-Yonah, Orli Avi-Yonah, Nir Fishbien, Hayian Xu

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The United States is the only large federal country that does not have an explicit way to reduce the economic disparities among more and less developed regions. In Germany, for example, federal revenues are distributed by a formula that takes into account the relative level of wealth of each state (the so-called Finanzausgleich, or fiscal equalization). Similar mechanisms are found in Australia, Canada, India, and other large federal countries. The United States, on the other hand, has no such explicit redistribution. Each state is generally considered equal and sovereign, and the federal government does not distribute revenues to equalize …

Due Diligence In International Tax Law, Reuven S. Avi-Yonah, Gianluca Mazzoni

Book Chapters

This chapter describes how the due diligence standard was developed in international tax law before 2008, and then how the standard was greatly modified after the financial crisis, the enactment of the Foreign Account Tax Compliance Act of 2010 (FATCA), and the subsequent development of the Common Reporting Standards (CRS). The chapter outlines how the due diligence concept is applied to private actors, especially financial institutions, to prevent tax evasion. It ends with some conclusions including that while due diligence in international tax law is currently embodied in a specific set of rules, there remains an absence of an overarching …

The Worst Tax Law Ever Enacted?, Reuven S. Avi-Yonah

Articles

Some tax laws are worse than others. The 1986 Tax Reform Act is generally considered one of the best. The 2017 Tax Cuts and Jobs Act is generally considered one of the worst, although I would say it is too early to tell what its long-term impact might be, and some of its worst features (like the Code Sec. 199A deduction) might be repealed in the future.

Another example of a generally condemned tax law is the American Jobs Creation Act of 2004. This law was a must-pass piece of legislation because Congress needed to react to the sanctions imposed …