Overview
- Decree 840/2025 published in the Boletín Oficial sets a partial increase from December 1 for liquid fuels and carbon taxes.
- The December move adds roughly $16.37 per liter to nafta súper and $13.54 to gasoil in tax terms before any company pricing decisions.
- From January 1, 2026, deferred updates covering 2024 and the first three quarters of 2025 will be incorporated as a 31.8% inflation correction to fixed-sum fuel taxes.
- The measure allows implementation via a schedule rather than a single lump adjustment and re-aligns updates with Law 23.966’s quarterly inflation-linked cadence.
- Analysts link the shift to 2026 budget projections of sharply higher fuel-tax receipts, while pass-through to pump prices may vary by company, fuel grade, and region including Patagonia’s differential treatment for diesel.