Multinational profit shifting leaves states a potential $500 billion annually.

That is the Tax Justice Network report’s estimate of additional corporate-tax revenue governments could collect without raising statutory rates. It is not a finding that companies have already stolen $500 billion. Much of the profit shifting described is legal under current rules. The claim is narrower and more consequential: existing rules allow multinational profits to be recorded in low-tax jurisdictions rather than allocated to the countries where workers produce, customers buy, and economic activity occurs.

That is the case for unitary taxation. Treat a multinational as one economic enterprise, then allocate its profits according to measurable activity such as sales, payroll, production, and customers. The alternative is to treat the address of a subsidiary as the decisive fact. A company can operate through a global supply chain while assigning a large share of its profit to an entity with little more than a legal address.

The difference is not semantic. Rules built for national industrial companies in the 1920s now govern firms whose valuable assets include patents, software, brands, data, and internationally distributed supply chains. General Motors made the equivalent of $4.7 billion in 1929. Apple’s profit last year was $112 billion. The companies changed. The tax architecture remained available for profit allocation that does not track the location of production or consumption.

The fiscal consequence is a distributional choice. Governments constrain public services while foregoing revenue that could be recovered by changing the allocation rules. “Money is tight” may describe a budget under current law. It does not settle whether the current law should continue assigning taxable profit to booking centres rather than to the economies generating it. A government that declines to recover available revenue has chosen a tax base. It has not discovered an economic law requiring service reductions.

The numbers in the report are substantial, but they remain estimates of potential revenue. Britain could collect about £13 billion a year, according to the report—roughly two-thirds of the cost of an NHS-style social-care system. European Union governments could raise enough to quadruple climate-adaptation spending. The report estimates that countries in the global south could receive $156 billion in one year, more than the International Monetary Fund currently has outstanding in loans to those nations. These figures depend on the proposed allocation rules, implementation, compliance, and the response of firms and jurisdictions. They are not cash already sitting in a government account. They are the estimated value of changing the rules.

Tax havens would not experience the change uniformly. Diversified jurisdictions such as Switzerland and the Netherlands could offset some lost booking activity by raising rates or relying on their broader economies. Pure booking centres such as the Cayman Islands would have less productive activity from which to replace the revenue. That distinction matters. A jurisdiction that loses paper profits is not necessarily losing factories, workers, customers, or productive investment.

Ireland illustrates the political problem. The country, facing an estimated $11 billion annual tax loss under the report’s analysis, has begun putting part of its “windfall corporate tax receipts” into a new fund. That is prudent fiscal management if the receipts are temporary. It also acknowledges that revenue generated by a mobile tax position cannot safely finance permanent public obligations. A tax base built on booking practices is vulnerable to changes in international rules and corporate allocation decisions.

The United Nations talks opening in New York are intended to address that vulnerability. A fiscal framework convention, modelled in broad structure on the UN climate regime, would establish governing procedures, with later protocols supplying detailed rules. The target is agreement by late 2027. One proposed protocol would allow countries to tax digital and other cross-border services without waiting for a company to establish a domestic office. The absence of a local office is not the absence of local customers, workers, infrastructure, or revenue.

A second proposed change could move tax disputes away from secretive investor-state arbitration and toward a more open, UN-led process. The issue is not that every private arbitration is unlawful or that every public process is automatically better. The issue is whether rules governing a country’s tax base should be negotiated in forums where corporate claimants can challenge public measures with less transparency than ordinary legislative and administrative processes provide.

The United States walked away from the negotiations last year and urged others to follow. None did. That gives Washington a diplomatic position, not a veto over other countries’ tax systems. The administration can threaten trade consequences, but it cannot prevent another government from taxing economic activity within its jurisdiction. The same leverage problem appeared in the recent tariff treatment of Britain relative to European Union rivals, which Main Street Independent has documented here. Economic rules become instruments of pressure when the United States demands access for its companies while resisting rules that make those companies answerable to the countries where they operate.

That does not make every international tax proposal sound. Countries can design rules that are administratively costly, create double taxation, or invite disputes over the location and value of economic activity. Unitary taxation therefore requires a common formula, transparent administration, procedures for resolving disagreements, and safeguards against both corporate avoidance and arbitrary public assessment. Those are design questions. They are not reasons to preserve a system that treats paper allocation as more important than real activity.

The state is not an outsider to the profits being taxed. It supplies the legal order, infrastructure, educated workforce, courts, currency, and market access that make those profits possible. The question is not whether governments are entitled to interfere with a naturally private accounting system. The accounting system is constituted by law. The question is which legal allocation best reflects where value is created and which jurisdictions must provide the public goods that production requires.

African nations have pushed the UN process toward consensus where possible and majority rule where necessary, with support from India, Brazil, and other developing powers. That procedural choice matters because a requirement of universal consent can give a small group of wealthy jurisdictions effective control over reform. Majority rule is not a license to impose arbitrary taxes. It is a way to prevent one bloc from making reform impossible by refusing to agree.

The affirmative position is straightforward: countries should tax the value created within their economies, allocate multinational profits through a common unitary formula, and establish a public dispute process with voting rules that prevent a single rich-country bloc from blocking implementation. This is tax-base recovery, not a rate increase. It distinguishes the income generated by an economy from the address where a subsidiary records it.

The Tax Justice Network supplies an estimate, not a verdict on money already stolen. The UN negotiations supply a possible mechanism. The African-led coalition supplies the political route. The choice before governments is whether to keep constraining public services under a tax architecture that assigns profits elsewhere, or to collect a larger share of the revenue their economies already generate.