Digital services taxes in Belgium and the United Kingdom collect minuscule revenue while inflicting economic damage that exceeds the money they raise, according to a new analysis published by the Tax Foundation in 2026. The report examines Belgium's proposed digital tax and Britain's existing levy, finding both produce less than 0.1 percent of total government revenue but shrink their economies by more than the taxes bring in. The analysis uses dynamic modeling to show how these taxes reduce investment, worker pay, and overall economic output.
Belgium's proposed digital tax would generate an estimated €148 million annually, the report projects, but would subtract €342 million from the nation's GDP—more than double the revenue collected. The UK's digital services tax raised £808 million in the 2024-2025 tax year while cutting £903 million from British economic output, exceeding the revenue gained. Both levies target large technology companies, primarily American software firms, by taxing gross revenues from digital advertising and other online intermediation activities. The Belgian tax calculates an assumed profit percentage from gross receipts, then applies a tax rate to that deemed income, while Britain's version directly taxes a share of gross revenue. Corporate income tax deductibility in both countries partially offsets the burden on capital, though the overall effect remains negative.
The modeling shows digital services taxes drive down both labor and capital availability, according to the authors, with workers facing reduced after-tax purchasing power and lower overall productivity. The report states that Belgium's larger per-euro harm stems from its heavier taxation of labor at the margin: additional worker earnings face a 65.0 percent tax rate in Belgium compared to 35.9 percent in the UK for a single employee making the average wage, or 84 percent versus 49 percent after consumption taxes are included. The authors note their results "may even understate the negative impact" because available data and modeling techniques can't fully capture the harm from tax pyramiding, where the same economic activity gets taxed multiple times as it moves through supply chains. The Tax Foundation testimony before Belgium's Finance and Budget Committee in August 2026 flagged additional drawbacks including legal disputes, treaty conflicts, and administrative complexity.
The damage comes primarily from taxing business inputs, which raises the cost of capital and discourages investment, the report explains. When digital services taxes apply to software, equipment, or labor found through online search or digital marketplaces, they create an unrecovered tax wedge on creating capital goods, ultimately yielding fewer of them. The levies also violate tax neutrality by discriminating across industries and business models, pushing consumers and companies toward less efficient choices purely for tax reasons. Because economic harm typically grows with the square of tax rates rather than linearly, double taxation through pyramiding becomes more than twice as distortive. The authors acknowledge their modeling captures labor-versus-leisure tradeoffs and investment-versus-consumption decisions but can't systematically quantify the massive substitutions within those categories caused by uneven taxation.
The report warns that gross receipts taxes like digital services levies rank among the most harmful per dollar of revenue raised, with their complexity making complete quantification impossible. The authors cite decades of economic research advising against taxing intermediate business inputs, pointing to seminal frameworks from scholars including Diamond, Mirrlees, Atkinson, and Stiglitz. A more comprehensive assessment accounting for all forms of nonneutrality and pyramiding "could be even more negative," the analysis concludes, than the already unfavorable results presented.