The French tax landscape is hitting a period of turbulence, marked by an instability that is weighing heavily on large listed corporations. The case of FDJ United highlights this concerning situation, with its effective tax rate jumping from 25.7% to 42.5% in just one year. This sharp surge stems from the introduction of an exceptional contribution on the profits of the largest companies—a lever initially presented as a transitional measure for the 2025 budget, but which now appears set to be extended indefinitely.

In accounting terms, the consequences are immediate and severe. This surtax, which pushes the corporate tax burden to 41.2% for entities with over €3 billion in revenue, affects approximately 300 major economic players in France. For FDJ United, this resulted in a net loss of €16 million in the first half of 2026, a stark contrast to the profits posted in the previous fiscal year. As a matter of prudence, the group has been forced to downwardly revise its growth outlook, now anticipating a decline in its annual revenue.

Uncertainty is setting in for the long haul as Bercy’s intentions become clearer. Despite the officially temporary nature of this measure, sources close to the government suggest that a third year of application, for 2027, is already in the works. This de facto permanence has reignited criticism from the business world, notably the Medef, which points to a breach of trust regarding the government's word. Historical parallels with other "provisional" taxes that became structural over the decades are fueling widespread skepticism among economic observers.

Beyond the figures, this issue raises crucial concerns regarding the attractiveness of the Paris financial center. For investors, this fiscal unpredictability is becoming a unavoidable risk factor to be integrated into their valuation models. The promise of stability, frequently touted by public authorities, is clashing here with the budgetary necessity of tapping into large-cap companies. This tax instability, which also mirrors recent debates regarding the CSG, is undermining market confidence and could eventually drive capital away from French stocks in favor of geographical regions offering better regulatory visibility.