Spanish drivers will face a sharp rise in fuel costs from this Saturday, when new tax rules take effect. The government has cut the hydrocarbon tax discount from 15 to 10 cents per litre, while keeping VAT at 21%. Filling a 50-litre diesel tank will cost more than €91, while a 50-litre petrol tank will cost more than €86. The change lands at the height of the summer holiday season, affecting millions of motorists preparing for the August getaway.
From August 1, diesel and petrol will each rise by six cents per litre. Fuel prices have already surged over the past month, with diesel climbing 18% and petrol 16% in July alone. Diesel now costs around €1.83 per litre, while petrol is at €1.73. The increase reflects the smaller tax discount and the return of the standard VAT rate, which had been temporarily lowered to 10% until July. Since VAT applies to the taxable price, a change in the underlying tax relief does not necessarily produce the same change at the pump.
These tax changes form part of the government’s latest anti-crisis decree, approved in June and ratified by Congress this week. The plan phases out the previous relief, with a 15-cent-per-litre discount in July, 10 cents in August and 5 cents in September; from October onwards, there will be no discount. The Confederación Española de Empresarios de Estaciones de Servicio (CEEES) has criticised the timing, calling it an unnecessary blow during the busiest travel period. The organisation had urged the government to keep the reduced VAT and fuel tax relief through the end of summer, arguing that the measures were impressive to protect consumers’ purchasing power and the tourism sector.
The new tax regime comes amid broader increases in Spain’s energy costs. Electricity prices have also risen compared with last summer. Together, these increases have pushed inflation to 3.5%, its highest level in 2026, ending a period of relative stability and moving it further from the European Central Bank’s 2% target. The government’s approach to energy taxes has drawn scrutiny, particularly as the conflict between the United States and Iran has added to global fuel price volatility.
Fuel taxes account for a large share of the retail price: Spain’s Ministry of Finance puts the tax component at 26.7% of the final diesel price, compared with 39.1% across the European Union. That difference matters when assessing pump prices, since drivers pay both the hydrocarbon tax and VAT.
Spain has faced challenges in managing energy-related funds and policies before. For example, recent analysis highlighted difficulties in executing EU wildfire prevention funds, with much of the allocated aid remaining unused. Complex policy shifts and incomplete implementation continue to affect Spanish consumers and businesses.
A separate autumn fuel-tax structure was later established under Royal Decree-Law 25/2026, dated September 29 and effective from October 1. Its base schedule set reductions in the hydrocarbon tax for unleaded petrol and automotive diesel at €0.20 per litre in October, €0.13 in November and €0.06 in December. Spain’s Congress validated the decree on October 19. An inflation safeguard could preserve a larger reduction if prices met the specified threshold; the government later maintained the maximum €0.20-per-litre reduction for November under that mechanism.
As the summer peak approaches, the effect of these tax changes is clear: households and businesses, including tourism and transport operators, will face higher costs at the pump. The government’s phased withdrawal of fuel tax relief, alongside persistent inflation and rising energy prices, is set to make August one of the most expensive months for motorists in recent years. Debate over how to balance fiscal policy with consumer protection and economic recovery remains unresolved as Spain moves deeper into the holiday season.
