Portugal has temporarily cut minimum ISP tax rates on petrol and diesel under Law No. 12-B/2026, amid higher energy costs linked to the Middle East crisis, with reduced rates effective until 30 June 2026.
Portugal has approved a temporary reduction in the minimum unit tax rates applied to petroleum and energy products under ISP (Imposto sobre os Produtos PetrolÃferos e Energéticos), in response to rising energy costs linked to the Middle East crisis, under Law No. 12-B/2026 of 15 April 2026.
The measure applies to unleaded petrol and diesel, setting new minimum ISP rates at EUR 199.89 for unleaded petrol (previously EUR 359.00) and EUR 156.66 for diesel (previously EUR 302.00).
The law temporarily amends existing fiscal provisions on petroleum and energy products while keeping all other standard ISP rate rules unchanged.
Law No. 12-B/2026 entered into force on 16 April 2026 and will remain applicable until 30 June 2026.
