Portuguese Cabinet Imposes Temporary 33% Windfall Tax on Oil Sector Profits
The Portuguese Council of Ministers has authorized a temporary 33% solidarity contribution targeting exceptional 2026 corporate profits recorded by fossil fuel extraction and refining companies.
On July 30, 2026, the Portuguese government approved a new "windfall tax" structure targeted at corporate profits in the energy sector. Under this newly approved mechanism, a 33% corporate tax rate applies specifically to the portion of 2026 oil and refining earnings that exceeds by more than 20% the baseline historical average recorded during fiscal years 2024 and 2025. This legislative change impacts corporate cash flow structuring for primary operators like Galp Energia, with state revenue legally earmarked to mitigate inflation shocks and support domestic energy transition projects.