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Presented as a tool to correct tax injustices, the Zucman tax is deeply dividing the French political class. Between redistributive ambitions and economic fears, this proposal reveals the ideological fault lines of a France that is seeking a balance between social justice and international competitiveness. A look at an emblematic reform with many stakes.
A Measure Targeting Great Fortunes
The Zucman tax, proposed by environmentalists and backed by part of the left, targets assets worth more than €100 million. It specifically affects 1,800 French tax households. Its goal is to ensure a minimum tax rate of 2% on these fortunes. In this way, it aims to prevent the tax optimization often criticized by its supporters.
This initiative is based on the research of the renowned economist Gabriel Zucman, a globally recognized expert on tax evasion and economic inequality. Inspired by the work of the EU Tax Observatory, the proposal was adopted by the National Assembly in February 2025, then rejected by the Senate the following June.
A Break With Tax Liberalism
This tax marks a break with the liberal tax doctrine that has prevailed for several decades. Its supporters see it as a necessary return to redistributive taxation, capable of correcting widening gaps. The Institute of Public Policy points out that, paradoxically, the wealthiest sometimes show lower effective tax rates. In fact, these rates are often lower than those of the middle classes.
However, some economists, such as Sylvain Catherine and Gilles Raveaud, question the methodology of these studies. They argue that the French tax system remains largely progressive. Indeed, this is especially true if one includes the generous social transfers of the French model.
The Senate’s Rejection: A Deep Ideological Divide
The Senate’s rejection on June 12, 2025, clearly illustrates the left-right divide. The left sees it as a lever for social justice. However, the right and center fear a negative effect on investment and competitiveness. Senator Emmanuel Capus in particular criticizes the ideological nature of the project, noting that it would risk unfairly penalizing entrepreneurs and startups, potentially forced to sell illiquid assets.
This concern is even more acute because the assets in question often include shares in innovative companies. In addition, these values fluctuate sharply without necessarily generating enough cash to pay the tax.
A Contested View of Wealth: Flow or Stock?
The debate also centers on the very definition of wealth. For opponents of the tax, it is based on a mistaken view of wealth as a static stock. But wealth is more of a dynamic flow: it is built, destroyed, and reinvested continuously. In their view, an overly heavy tax could freeze the economy. In addition, it would discourage the risk-taking needed for economic growth.
By contrast, supporters stress the urgent need to correct widening inequalities, which they say threaten social cohesion. They point to historical precedents such as the wealth tax (ISF), abolished by Emmanuel Macron, which remain popular among a public sensitive to tax fairness.
A Political Debate Far From Over
The government says it is working on an alternative, more moderate proposal to address the concerns raised by entrepreneurs. Left-wing parties promise to bring the proposal back during a future parliamentary window. This shows their determination to keep pressure on this issue.
For its part, civil society is organizing: a support petition has already gathered 60,000 signatures, with backing from figures such as economist Jean Pisani-Ferry. Through these mobilizations, France could join an international movement. This aims to establish a global minimum tax on large fortunes. This is in line with the spirit of the recent international tax on multinationals.
The Major Challenge of Asset Transparency
The effective implementation of this tax also raises a major technical challenge: the administrative capacity to assess assets accurately, especially financial and professional ones. At present, Insee and the tax authorities still do not have fully suitable tools. This requires major investment in information systems and a significant increase in human and technical resources.
This operational challenge fuels additional doubts among critics of the tax. Indeed, they fear excessive intrusion by the government into citizens’ private affairs.
Tax Justice or Political Symbol?
In the end, the Zucman tax has become much more than a simple tax measure: it embodies a deep ideological clash over the French and European economic model. Between fair redistribution and preserving entrepreneurship and economic attractiveness, the debate remains heated and complex. One thing is certain: taxation of the ultra-rich will continue to leave a lasting mark on the French political agenda.