Government increases ISP tax discount on diesel and petrol

The government is increasing the extraordinary tax discount on fuel (ISP) by 2.1 cents per litre for diesel and 1.4 cents for petrol starting next week, following a Diário da República publication this Friday, 2026-08-14. Despite this measure, fuel prices are still expected to rise by 8 to 10 cents per litre for diesel and 8.5 to 9 cents for petrol, based on industry estimates.

