Comparison of Tax Revenue Effects of United Nations and OECD Subject to Tax Rule for G-24 and South Centre Member States
By Faith Amaro and Sol Picciotto
The Subject to Tax Rule (STTR) seeks to address the historical imbalance in the allocation of taxing rights under international tax treaties by introducing within existing treaties a new article which makes the restrictions on source taxation conditional on the residence jurisdiction imposing a minimum level of tax on foreign-derived income. This paper presents a methodology for analysing the respective benefits of the STTRs developed by the Organisation of Economic Co-operation and Development (OECD) and the United Nations (UN). Applying this model to publicly available data for 2021, it also provides estimates of the possible revenue impact for the 65 Member States of the South Centre (SC) and the Intergovernmental Group of 24 (G-24). Our analysis indicates that the OECD STTR would have no impact on any OECD country treaty with a SC/G-24 Member State. Applying the prescribed 9% minimum rate to covered payments, only 100 treaties across 28 SC/G-24 Member States would qualify for improvement under the OECD STTR, with an estimated combined revenue gain of USD 55.6 million, 71% of which is concentrated in just five treaties. In contrast, the UN STTR, which does not specify a minimum rate, was modelled using rates of 9%, 10% and 15%. This resulted in estimated revenue gains of USD 212 million, USD 325 million, and USD 1,165 million across 171, 210 and 317 treaties, respectively. Given its complexity and restrictive scope, it seems pointless for any SC/G-24 Member State to join the OECD STTR. Instead, countries should focus on identifying treaties that cause unjustifiable revenue losses and consider revising them – either by adopting the simpler and broader UN STTR or implementing other measures such as active anti-abuse provisions to combat treaty shopping and tax avoidance.
Analysing the Impact of UN and OECD Subject to Tax Rule for G-24 and South Centre Member States
By Suranjali Tandon and Chetan Rao
The Subject to Tax Rule (STTR) is meant to address base erosion and profit shifting in cross –border transactions. The United Nations (UN) and Organisation for Economic Co-operation and Development (OECD)/Group of Twenty (G20) Inclusive Framework have developed models of the STTR that countries may choose to adopt in their treaties. This paper provides a review of these designs of two STTR models and proceeds to estimate the revenue gains for the Intergovernmental Group of Twenty-Four on International Monetary Affairs and Development (G-24) and South Centre Member States that may arise from a STTR that covers different kinds of payments. The OECD STTR is limited to related-party payments and imposes thresholds based on mark-up and materiality, reducing its applicability in practice. In contrast, the UN STTR offers broader coverage, applies to both related and unrelated parties, and does not impose restrictive thresholds, making it more administratively feasible for developing countries. Although the estimated gains from the OECD STTR appear modest due to its narrow scope, the UN STTR shows greater potential. The analysis also highlights data limitations and the need for access to microdata for accurate country-level assessments.
Mali’s Mining Shake-Up: Tax audits reveal massive revenue loss and lead to stringent policy changes
By Anne Wanyagathi Maina and Kolawole Omole
Mali’s recent regulatory changes and tax dispute settlements highlight the government’s determination to secure a greater share of economic benefits from its natural resources. Mali’s approach presents a lesson for resource-rich developing countries. The article explores the country’s mining tax reforms, ensuing tax disputes and settlements, and implications on revenue mobilization.
Review: Taxation and Inequality in Latin America: New Perspectives on Political Economy and Tax Regimes (2023)
By Abdul Muheet Chowdhary
The volume Taxation and Inequality in Latin America: New Perspectives on Political Economy and Tax Regimes is an insightful collection of articles about the patterns of inequality in Latin America and detailing the nature of tax avoidance and evasion in the region, with lessons from political attempts to bring about progressive reforms and tax considerations for policymakers about the future of the region’s development.
Honduras’ Tax Justice Law: Increasing tax collection to achieve the SDGs without increasing tax rates
By Abdul Muheet Chowdhary, Kuldeep Sharma and Kolawole Omole
In April 2023, the government of Honduras submitted a tax reform bill called the “Tax Justice Law” to the National Congress through which it intends to reform the Honduran tax system with potential for improved revenue collection, that too, without introducing new taxes or increasing tax rates. The law aims at Constitutional recognition that tax collection must be progressive, change the principle of taxation from territorial to worldwide taxation of income, introduce Ultimate Beneficial Ownership requirements that inter alia aim to repeal bearer shares, facilitate exchange of information with other jurisdictions, eliminate banking secrecy for tax purposes, implement credit method in domestic legislation to eliminate double taxation, amend the Constitution so as to limit tax exemptions to a maximum period of 10 years, restore transfer pricing audits to check abusive claim of tax incentives and eliminate the possibility of forgiving tax debts. The provisions contained in the Tax Justice Law are timely and welcome, particularly in light of the Global Minimum Tax. They can improve government revenues, reduce public debt and create the fiscal space for achieving the Sustainable Development Goals.
South Centre Inputs on “Zero Draft Terms of Reference for a UN Framework Convention on International Tax Cooperation”
20 June 2024
The South Centre submits the following inputs to the Chair of the Ad Hoc Committee to Draft Terms of Reference for a United Nations Framework Convention on International Tax Cooperation.
A Toss Up? Comparing Tax Revenues from the Amount A and Digital Service Tax Regimes for Developing Countries
By Vladimir Starkov and Alexis Jin
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 regimes largely depend on (a) the mix of relevant domestic economic activities at market jurisdictions (i.e., revenues sourced to the country as a market jurisdiction under Amount A and the level of revenues from automated digital services generated in the country), (b) design details of the DST regime such as the DST tax rate and the nature of activities to be taxed and (c) the relief from double taxation, if any, countries will grant to domestic and foreign taxpayers under DST. This paper contains analysis relying on sources of information available to private sector researchers and it does not involve review of any information that individual taxpayers provided to tax authorities.
G-24 South Centre Call For Papers: Comparing tax revenues to be generated from United Nations and OECD Subject To Tax Rule (STTR)
Deadline – 1 July 2024
The G-24 and the South Centre have launched this Call For Papers providing funding for studies which can produce country level comparative revenue estimates of the UN and OECD STTR on the 65 combined Member States of the South Centre (available here) and the G-24 (available here). The data should clearly provide how much revenue each Member State will get if they opt for the UN STTR vs the OECD STTR. The objective is to help Member States of both intergovernmental organizations make informed decisions on adopting the version of the STTR which is more beneficial to them.
Member States of the G-24 and the South Centre are advised to wait till the publication of the results of this study before taking a decision on whether or not to sign the OECD STTR MLI.
2023 ANNUAL REPORT ON THE ACTIVITIES CARRIED OUT BY THE SOUTH CENTRE TAX INITIATIVE
The South Centre’s interventions have had a significant impact in helping developing countries bring about major reforms to the international tax system in 2023. Key achievements include the passage of the historic resolution in the United Nations General Assembly for the initiation of a UN Framework Convention on International Tax Cooperation, the successful end of a twenty year long negotiation in the UN Tax Committee for taxing computer software, the passage of an enhanced version of the Subject to Tax Rule in the UN Tax Committee for ending non-taxation in tax treaties, country level revenue estimates on the OECD digital tax solution vs Digital Services Taxes for the 85 combined Member States of the South Centre and the African Union, and extensive in-country capacity building for several South Centre Member States for taxing the digital economy and tax treaty negotiations.
As globalisation has pushed through complex inter-State trade in goods and services, in parallel there is a growing complexity in determining the taxation of Multinational Enterprises (MNEs) in an increasingly digitalized economy. This report reviews existing bilateral tax treaties between South Centre’s Member States and States where most digitalised MNEs are headquartered, using a threshold of EUR 750 million in annual turnover to limit the number of in-scope MNEs in the study. This analysis produced primary data on South Centre Member States’ source taxing rights scores and the implications of this on tax treaty negotiations to enable effective taxation in the digital economy through the inclusion of the United Nations (UN) solution for digital taxation, Article 12B of the UN Model Tax Convention. Further, the study sought to identify ‘weak’ tax treaties with low source taxing rights which merited a comprehensive renegotiation beyond the inclusion of Article 12B. Furthermore, the reports examined the treatment of “Computer Software” in the tax treaties under study, and concluded with recommendations going forward.
By Sol Picciotto, Muhammad Ashfaq Ahmed, Alex Cobham, Rasmi Ranjan Das, Emmanuel Eze, Bob Michel
This paper puts forward an alternative to the proposed multilateral convention under Pillar One of the BEPS project, by building on and going beyond the progress made so far. A new direction was signalled in 2019 by the G-24 paper proposing a taxable nexus based on significant economic presence, combined with fractional apportionment. The resulting measures agreed under the two Pillars entail acceptance in principle of this approach, and also provide detailed technical standards for its implementation. These include: (i) a taxable nexus based on a quantitative threshold of sales revenues; (ii) a methodology for defining the global consolidated profits of MNEs for tax purposes, and (iii) detailed technical standards for defining and quantifying the factors that reflect the real activities of MNEs in a jurisdiction (sales, assets and employees).
The time is now right to take up the roadmap outlined by the G-24. The work done shows that technical obstacles can be overcome, the challenge is essentially political. This paper aims to provide a blueprint for immediate measures that States can take, while engaging in deliberation at national, regional and international levels for a global drive towards practical and equitable reforms. Unitary taxation with formulary apportionment is the only fair and effective way to ensure taxation of MNEs where economic activities occur, as mandated by the G20. It can ensure that MNE profits are taxed once and only once, provide stability and certainty for business, and establish a basis for international tax rules fit for the 21st century.
* Also available in French, Spanish, Portuguese and Arabic.
Global Minimum Taxation of Multinationals: Opportunities and risks for some African States
By AMAGLO Kokou Essegbe, KOUEVI Tsotso and ADJEYI Kodzo Senyo
To face the challenges posed by the digitization of the economy, the OECD’s Inclusive Framework has developed two Pillars to address tax base erosion and profit shifting. The objective of Pillar Two is to define the minimum amount of tax to be paid by multinational enterprises in the jurisdictions where they operate. The OECD’s Inclusive Framework has adopted an average effective rate of 15% for this purpose. The objective of this study is to show whether the implementation of Pillar Two in African jurisdictions constitutes an opportunity or a risk for them.
The results show that it is an opportunity for countries with a low effective tax rate and a risk for countries with a high effective tax rate. Therefore, setting a 15% income tax rate for non-resident multinationals is an opportunity for some African countries. For it would constitute for these countries a source of additional tax revenue mobilization. For this reform to be an opportunity for Africa, however, the minimum effective tax rate must be raised to at least 20%, as was demanded by the African Tax Administration Forum (ATAF).
The risk that lies in the application of an effective rate of 15% for Africa as a whole is that some African countries might have to reduce their effective tax rate. This would be a loss of revenue for those African countries. Since most countries in the African jurisdiction have effective tax rates and statutory corporate income tax rates that are more than 20 percent, above the set average effective rate, multinationals would seek to shift their profits to the countries with the most advantageous taxation. This could lead to a transfer of profits to other jurisdictions.
