Candice Horbacz
Around the world, cross-border services are increasingly facing a growing and complex patchwork of discriminatory taxes, threatening the foundational principles of efficient global commerce. This emerging trend is characterized by policies that impose higher effective tax burdens on international service provision compared to similar domestic activities, creating significant economic distortions and undermining the cooperative framework of international taxation. This article delves into three prominent examples of this erosion: the evolving proposals from a United Nations convention, the digital services taxes (DSTs) enacted in various Organisation for Economic Co-operation and Development (OECD) countries, and a specific element of the United States tax code known as the Base Erosion and Anti-Abuse Tax (BEAT). While distinct in their origins and specific designs, these instruments share a critical commonality: they prioritize national revenue claims over the principles of neutrality, ultimately making the global economy, and potentially the US in particular, a poorer and less efficient place.
Services constitute a rapidly expanding segment of global cross-border economic activity. In the US, for instance, services have grown to represent 36 percent of all exports, highlighting their critical role in modern economies. The principle of tax neutrality—where taxation does not alter the relative prices of economic decisions that would otherwise be made on their merits—is paramount for fostering efficiency. When tax systems differentiate between activities, they inadvertently divert labor and capital from their most productive uses, forcing firms to expend valuable resources navigating complexity or engaging in litigation rather than focusing on innovation and growth. While these principles are well-understood in economic theory, their practical application is increasingly being compromised in the realm of cross-border services.
The subtlety of this erosion in services taxation stands in stark contrast to the overt nature of tariffs in goods trade. Discriminatory taxation on services is often intricately embedded within corporate tax codes, frequently framed in terms of "fairness" or as a response to legitimate concerns about profit shifting. This linguistic framing lends these measures a perceived legitimacy that direct tariffs on physical goods might lack. These policies often attempt to assert taxing rights based on customer location (destination-based taxation) rather than production location (source-based taxation). While properly designed destination systems, such as Value-Added Taxes (VATs), can preserve neutrality through mechanisms like input deductibility and tax credits, the policies under scrutiny often fail to incorporate such safeguards, leading to unintended consequences. Sectors like technology, consulting, and engineering thrive on scale, specialization, and cross-border integration. The US, with its comparative advantage at the top of many of these value chains, consistently maintains trade surpluses in these areas. Discouraging these gains through poorly conceived tax policies represents a significant economic misstep.
Defining the Pillars of Neutrality in a Global Economy
To understand the shortcomings of these contemporary tax measures, it is essential to revisit the core principles of tax neutrality in an international context. A neutral tax system minimizes economic distortion, ensuring that business decisions are driven by genuine economic merits rather than tax considerations. In the international sphere, where multiple jurisdictions assert taxing rights, the stakes are even higher. Poorly coordinated or discriminatory tax systems can lead to double taxation, inefficient capital allocation, and ultimately unravel the cooperative frameworks essential for global trade.
Governments often deviate from these principles due to nationalistic impulses or political pressures, seeking to benefit domestic constituents or shift tax burdens onto foreign entities. However, if universally adopted, such individually optimal decisions can lead to collectively suboptimal outcomes, diminishing global welfare. The following principles are crucial benchmarks against which cross-border service taxation should be evaluated:
- Production Location Neutrality: This principle dictates that a tax system should not impose a heavier burden on a service provided by a foreign producer than on an identical service provided domestically. Rooted in classical economic theory by figures like David Ricardo and Adam Smith, it recognizes that taxes penalizing imported services undermine gains from comparative advantage. In a modern economy, where services are increasingly tradable intermediate inputs, discriminatory taxation acts as a tariff on business inputs, raising costs for domestic firms, consumers, and ultimately reducing competitiveness in global markets.
- Capital Import Neutrality (CIN): Distinct from production location neutrality, CIN ensures that all firms operating within a given market face the same tax burden, regardless of their ownership or the location of their parent company. This promotes a level playing field for capital within each market. While perfect CIN is challenging given differing national tax rates, the core intuition is to avoid additional tax layers on cross-border transactions that discourage foreign direct investment and specialization.
- Net-Basis Taxation and Creditability: These are operational cornerstones for preventing the cascading of taxes through supply chains. Net-basis taxation means businesses are taxed on their profits (revenue minus costs), not gross revenue. Disallowing deductions for legitimate expenses, as seen in gross receipts taxes, leads to "tax pyramiding" where the same economic value is taxed multiple times. Creditability serves as a mechanism to prevent double taxation. In international tax systems, credits are often granted for foreign taxes paid against domestic tax liabilities. However, limitations on creditability, particularly for taxes not levied on net income or those targeting specific industries, can leave taxpayers facing the full burden of both foreign and domestic taxes, amplifying distortions.
- Jurisdictional Restraint: This principle asserts that a country’s tax claims should be proportional to the genuine economic connection between the taxpayer and the jurisdiction. Problems arise when tax liability is conditioned on a taxpayer’s activities, revenues, or characteristics in other jurisdictions, such as global revenue thresholds. This creates discrimination between otherwise identical firms, imposes disproportionate compliance burdens, and erodes the reciprocal restraint vital for international tax cooperation.
- Instrument Neutrality: Economically equivalent transactions should face equivalent tax treatment irrespective of their legal form or delivery mechanism. This principle is severely strained in the digital economy, where many new tax measures specifically target digital delivery channels (e.g., online advertising) while exempting their offline counterparts. This creates incentives to structure transactions inefficiently or simply imposes higher costs on the very digital innovations that enhance trade and specialization.
- Compliance and Enforcement Efficiency: A practical principle, this highlights the importance of proportionality between a tax’s administrative and compliance costs and the revenue it generates. Taxes that yield little revenue but impose heavy burdens on taxpayers and collectors are inefficient, diverting productive resources from more valuable uses. Simplicity, therefore, is a key component of sound tax design.
Case Study 1: The UN Framework Convention on International Tax Cooperation (UNFCITC)
In recent years, the United Nations has embarked on a process to reshape international tax norms, particularly concerning the allocation of taxing rights for cross-border services. The UNFCITC, driven largely by developing countries seeking a greater voice in global tax governance, aims to establish a multilateral legal framework. While still under development, with a final text anticipated by 2027, its initial drafts pose a significant threat to tax neutrality.
The core of the UNFCITC’s controversial approach lies in Article 4 of its draft framework convention, titled "Fair Allocation of Taxing Rights." This article ambiguously blends two distinct taxing-right claims: "where value is created" (traditional source-based taxation) and "where markets are located and revenues are generated" (destination-based taxation). The latter assertion grants market countries the right to tax income generated from sales to their customers, even if the service provider has no physical presence or assets within that country. For example, a US software firm serving clients globally from a server farm in Virginia could, under this principle, face income tax obligations in dozens of countries merely because its customers reside there. This unprincipled mix risks creating a "source-based taxation for my exporters, but destination-based taxation for my importers" scenario, inevitably leading to distortions.
Protocol 1, the early protocol on "taxation of income derived from the provision of cross-border services in an increasingly digitalized and globalized economy," translates Article 4’s abstract principles into concrete mechanisms. This protocol considers new rules that would permit market countries to tax cross-border service payments without physical presence, drawing heavily on the UN Model Double Taxation Convention. The practical outcome is the multilateral legitimization of gross-basis withholding taxes on payments to foreign service providers.
Violations of Neutrality by the UNFCITC:
- Net-Basis Taxation: The proposed gross-basis withholding taxes levy a flat percentage on total payments without deducting service provision costs. While simplicity is cited, this is a fundamentally flawed tax base, leading to potential "tax pyramiding."
- Avoidance of Double Taxation & Creditability: The draft convention is notably weak on double-taxation relief, making no binding commitment for residence countries to grant foreign tax credits. This means service providers would pay withholding tax in the market country and income tax in their home country, effectively a pure cost increase on cross-border services.
- Production Location Neutrality: Gross-basis withholding taxes apply only to nonresident service providers, not domestic ones. This discriminates against foreign providers, acting as a tariff on service imports and discouraging international specialization. An IMF working paper by Liu, Klemm, and Lal (2025) suggests that a one percentage point increase in withholding tax rates is associated with a one percent decline in bilateral services imports, often leading to treaty shopping and rerouting rather than genuine revenue gains.
- Jurisdictional Restraint: Article 4’s destination-based claim represents a vast expansion of national tax jurisdiction for income taxes, moving beyond traditional physical presence requirements. This haphazard approach, divorcing taxing rights from the mechanisms needed for effective implementation (like VATs), is a recipe for distortion.
The US, having withdrawn from these negotiations in February 2025, recognizes the threat. While developing countries’ desire for a greater voice is legitimate, and concerns about taxing digital services are real, gross-basis withholding taxes are not the optimal solution. Properly designed consumption taxes, like VATs extended to digital services, offer a far less distortive and more neutral alternative, capturing the same tax base with greater efficiency. The UNFCITC risks legitimizing taxes that undermine global economic efficiency and foster uncooperative international trade practices.
Case Study 2: Digital Services Taxes (DSTs)
While the UNFCITC represents a future threat, Digital Services Taxes (DSTs) are a present reality in several affluent economies, particularly in Europe. These unilateral levies, typically imposed on the gross revenues of large digital companies, target specific activities such as online advertising, digital marketplaces, and user-data monetization. Rates vary, from 1.5 percent in Poland to 7.5 percent in Hungary and Turkey, with most clustered around 2-3 percent. Initially framed as interim measures pending the OECD’s Pillar One agreement (which aimed to reallocate taxing rights to market jurisdictions), the stalling of Pillar One has left DSTs at risk of becoming permanent.
The Flaws of DSTs:
- Revenue Threshold Problem: A defining feature of DSTs is their use of global revenue thresholds (e.g., €750 million) to determine tax liability within a single country. This means two companies selling identical digital advertising in France might face different tax obligations solely based on their global revenue. This violates jurisdictional restraint, capital import neutrality, and can create production location distortions, favoring companies with smaller global footprints. These thresholds also impose disproportionate compliance burdens and, if not adjusted for inflation, will gradually ensnare more firms, including smaller ones.
- Gross Revenue and the Margin Problem: DSTs are levied on gross revenue, not profit. This mirrors the flaws of the UN proposal. A 3 percent DST on a digital marketplace with a 5 percent net profit margin can consume 60 percent of its profits. This gross-basis taxation also leads to "tax pyramiding" as value-added is taxed multiple times across a value chain. Furthermore, DSTs are generally not creditable against US corporate income tax, making them a pure tax hike rather than a reallocation of taxing rights. As intermediate business inputs, DSTs effectively raise costs for European small businesses that rely on digital advertising, making them less competitive against rivals in third markets who do not face such taxes.
- The "Digital" Line and Instrument Neutrality: DSTs are often defined by their delivery channel, taxing online activities while exempting analog counterparts performing similar economic functions. This economically arbitrary distinction penalizes digital innovation and violates instrument neutrality. Critics also argue that the definition of "digital" is often drawn to exclude domestic IP-intensive industries while capturing predominantly foreign (e.g., US) tech companies, creating a "source base for my exporters, destination base for my importers" scenario.
The political economy of DSTs is rooted in public frustration with large tech companies and the slow pace of multilateral tax reform. While the goal of taxing digital services consumed within a country’s borders is legitimate, DSTs are an inefficient and distortive instrument. Value-added taxes (VATs) are a far superior tool. As shown in Table 1 (from the original article’s data), VAT revenues in major DST-imposing countries like the UK, France, Italy, and Spain are hundreds of times larger than DST revenues. VATs are comprehensive, destination-based consumption taxes that do not discriminate, do not rely on global revenue thresholds, and incorporate robust creditability mechanisms, making them far more efficient and neutral.
The confrontational dynamic surrounding DSTs is evident in the US’s Section 301 investigations and threats of retaliatory tariffs. This illustrates how unilateral neutrality violations can lead to escalatory cycles, eroding the global trading system. Even the OECD’s Pillar One, despite its flaws, at least attempted multilateral coordination, creditability, and proportionality. DSTs, by contrast, serve as a stark reminder that unilateral, gross-basis, and narrowly targeted instruments are the least principled way to pursue market-country taxation.
Case Study 3: The US Base Erosion and Anti-Abuse Tax (BEAT)
The critique of discriminatory taxation extends to the US itself, which maintains the Base Erosion and Anti-Abuse Tax (BEAT) within its tax code. Enacted as part of the 2017 Tax Cuts and Jobs Act (TCJA), BEAT creates many of the same neutrality violations observed in foreign measures, applying them to foreign companies’ service and intellectual property exports into the US. For the US to credibly advocate against discriminatory taxes abroad, it must address the shortcomings within its own system.
BEAT was designed to counter a genuine problem: multinational enterprises (MNEs) shifting taxable income out of the US through deductible payments to related foreign affiliates for services, royalties, interest, and rents. The broad approach of BEAT, aiming to deter suspicious deduction patterns without litigating every transaction, has some theoretical appeal. However, its execution is deeply flawed.
How BEAT Operates and Its Neutrality Violations:
BEAT functions as an alternative minimum tax for large MNEs (average annual gross receipts of $500 million and "base erosion payments" exceeding 3 percent of total deductions). If triggered, it requires adding back these base erosion payments (denying deductions) when computing a modified taxable income. The company then pays the greater of its regular corporate income tax or the BEAT rate (currently 10.5 percent) on this modified base.
- Over-Inclusiveness and Misaligned Purpose: While named for base erosion, BEAT does not actually test for it. It does not consider whether payments go to low-tax jurisdictions or whether they lack economic substance. It merely asks if deductible payments were made to related foreign parties in specific categories. This means BEAT sweeps in legitimate foreign direct investment (FDI) from high-tax, high-substance countries (e.g., Japan, France, Germany), effectively double-taxing income that has not been "eroded." This is a core violation of production location neutrality for foreign-headquartered companies and capital import neutrality, as foreign-parented companies are more likely to face BEAT burdens even when engaged in identical economic activity as domestic firms.
- Quasi-Gross-Basis Taxation: By denying deductions for what are often legitimate business expenses, BEAT partially converts the US income tax into something resembling a gross-basis levy for affected companies. For thin-margin operations, this denial can result in a very high effective tax rate on actual economic profit, similar to the "margin problem" seen with DSTs.
- Modest Revenue vs. High Distortion: BEAT’s direct revenue estimate is relatively modest, typically a few billion dollars annually. However, calculating an alternative minimum tax base is time-consuming and costly. Its low rate, relative to the corporate income tax, is a "red flag," indicating a lack of confidence in its design. The fact that much of its revenue comes from taxing legitimate activities in high-tax jurisdictions, as implied by JCT modeling of a proposed high-tax exemption, further underscores its overreach.
BEAT serves as a mirror image of DSTs. Both act as quasi-tariffs on cross-border services, use blunt proxies instead of precise measures, create false positives that penalize genuine economic activity, and generate modest revenue relative to the distortions they create. The US’s objections to European DSTs—discriminating against US companies, taxing gross revenue, and violating international tax principles—are valid but apply equally to BEAT from the perspective of foreign-parented firms.
The legislative history of BEAT, including the removal of a "high-tax exemption" that would have aligned it more closely with its stated anti-profit shifting purpose, highlights this internal contradiction. A truly reformed BEAT, narrowly targeted at genuine profit shifting, would enhance the US tax code and strengthen US credibility in advocating for neutral international tax norms.
Toward Principled Cross-Border Services Taxation
The case studies of the UNFCITC, DSTs, and BEAT reveal a common pathology: a tendency for countries to opportunistically assert destination-based taxing rights over cross-border services without the necessary safeguards that make such systems efficient and neutral. This leads to an unprincipled eclecticism where nations apply source-based rules to their exports and destination-based rules to their imports. The universalization of this approach results in tradeable sectors of the economy being effectively taxed twice, while non-tradeable sectors are taxed once, fundamentally violating decades of public finance research on tax neutrality.
Why the United States Must Lead:
The US has an unparalleled stake in promoting neutral treatment of cross-border services. As the world’s largest services exporter, with persistent trade surpluses in high-value sectors like technology, finance, and consulting, America’s most successful industries are directly targeted by these discriminatory measures. A global norm permitting such taxation disproportionately harms US economic interests.
Furthermore, the US benefits from cheap, high-quality imported services. An American manufacturer sourcing engineering services from Germany or data processing from India, then exporting finished products, becomes less competitive if taxes artificially inflate the cost of these imported inputs. A principled US stance must recognize imported services as a competitive asset, not a threat.
The US possesses immense economic leverage in international negotiations. Rather than focusing on bilateral goods trade deficits, which often reflect comparative advantage, the US should direct its influence towards combating discriminatory services taxes. These taxes represent measurable policy distortions that raise costs for US firms, reduce global supply chain efficiency, and violate established principles of tax neutrality. They are specific, documented, and amenable to negotiation. Critically, US credibility demands self-reform, starting with addressing the overreach of BEAT, potentially through a high-tax exemption.
Principles for Better Policy:
For countries seeking revenue from cross-border services, superior instruments already exist. The Value-Added Tax (VAT) stands out as the most obvious and effective. VATs are designed as destination-based consumption taxes, inherently neutral between domestic and foreign providers, and generate vastly more revenue than DSTs at a fraction of the compliance cost. Expanding existing consumption tax bases to cover services comprehensively is almost always preferable to introducing "creative" but flawed new levies.
Where income taxation is concerned, clean net-basis systems should be the standard. Deductibility of legitimate business expenses is not a loophole but essential for accurately measuring income. As deductions are denied, systems devolve into gross-based taxation, guaranteeing neutrality violations and economic inefficiencies. The low rates of many gross-based or quasi-gross-based taxes are a warning sign, reflecting a fundamental lack of confidence in their legitimacy.
The stalling of the OECD’s Pillar One agreement contributed significantly to the current situation. Despite its imperfections, Pillar One at least attempted multilateral coordination, creditability, and proportionality—principles sorely missing in unilateral alternatives. All countries should recommit to multilateral engagement to build a robust and neutral tax architecture for cross-border services. The US, in particular, must champion this cause, leveraging its economic power to dismantle antiquated, distortive tax practices and foster a truly planet-spanning neutral trade architecture for the benefit of global prosperity.
