Overview

• Decree 617/2025, published in the Official Gazette, updates the liquid-fuels and CO2 taxes with fixed per‑liter amounts: naftas +$10.523 plus $0.645 for CO2, gasoil +$8.577 plus $0.978 for CO2 and a $4.644 differential.
• The decree applies a partial update between September 1 and 30 and schedules the remaining deferred amounts for October 1, ending prior postponements from 2024 and early 2025.
• The tax adjustments are expected to lift pump prices once fuel companies pass the higher levies through, with broader effects on transport and logistics costs.
• Earlier this week, Resolution 1253/2025 lifted the gas PIST surcharge from 6.6% to 6.8% per m³ at 9,300 kcal, including autoconsumption, and ordered full pass‑through to users’ bills.
• The gas surcharge becomes billable only after ENARGAS publishes special invoicing procedures, and the measure is aimed at replenishing the Zona Fría trust while preventing gains or losses for distributors.