Hidden in the revised 2025 finance bill’s revenue table lies a staggering adjustment—one that dwarfs all others in scale. The projected corporate tax from the mining sector has plummeted by 97%, collapsing from 53.2 billion CFA francs to just 1.47 billion. No other taxpayer group faces such a drastic revision. For a nation banking on extractive industries to wean itself off oil dependency, this represents a sudden revenue drought of 51.8 billion CFA francs, equivalent to nearly 80 million euros in lost income from a single fiscal line.
Budget revision clashes with Gabon’s mining strategy
Manganese stands alongside timber and petroleum as Gabon’s third-largest foreign exchange earner. The country ranks as the world’s second-largest producer of the mineral, primarily mined in the Haut-Ogooué region by the Compagnie minière de l’Ogooué (Comilog)—a subsidiary of French giant Eramet—and by Nouvelle Gabon Mining. Since the 2023 military transition led by the Comité pour la transition et la restauration des institutions (CTRI), authorities have repeatedly stressed the need to boost fiscal returns from mining concessions. Yet the drastic tax cut in the revised budget tells a different story.
Multiple factors may explain the collapse. Global manganese prices have faced sharp declines since mid-2024, following a peak triggered by a mine fire in Australia earlier that year. The price slump has directly eroded the earnings of mining operators in Gabon, shrinking their taxable bases. However, the stark gap between initial projections and actual collection raises questions about the accuracy of the assumptions used in the original budget framework.
Extractive rents test Gabon’s fiscal transparency
The issue carries added weight as Gabon re-engages with the Extractive Industries Transparency Initiative (EITI) after years of absence. The 51.8 billion CFA francs in foregone revenue could fund several months of civil service salaries in key ministries. This shortfall arrives as Libreville negotiates a new support program with the International Monetary Fund amid liquidity pressures and increased reliance on regional BEAC markets to cover monthly expenses.
Local analysts highlight a growing disconnect between public rhetoric on tightening fiscal terms for multinational mining firms and the reality reflected in the revised budget. In late 2023, transition authorities pledged to review all mining and oil agreements, aiming to renegotiate fiscal regimes deemed unfavorable to the state. Yet two years later, the effective corporate tax yield from the mining sector barely reaches 3% of the original target—with no official explanation provided on the macroeconomic or contractual assumptions behind this revision.
Strategic signal for partners and investors
The timing of this adjustment is critical, arriving just weeks before the country finalizes its multi-year budget framework and must decide between sustaining major infrastructure projects or reining in the deficit. A 51.8 billion CFA franc shortfall forces the government to recalibrate spending plans, either through deeper budget cuts or greater domestic borrowing. Multilateral lenders will closely scrutinize how the transitional administration justifies this gap before the interim Parliament.
For mining investors, the move sends mixed signals. On one hand, the reduced tax burden offers financial relief during a downcycle in commodity prices. On the other, it fuels domestic debate over fair compensation for the country’s mineral wealth. The upcoming 2026 finance bill, expected this autumn, will need to clarify whether this adjustment is a temporary response to market conditions or a lasting shift in Gabon’s mining tax policy.
