The government pledged a temporary, extraordinary discount on the ISP — the Tax on Petroleum and Energy Products (Imposto sobre os Produtos Petrolíferos) — if pump prices jump by 10 cents or more compared with this week's level. Prime Minister Luís Montenegro made the commitment during a parliamentary debate; ministers framed the measure as a short-term cushion while critics warned it is politically driven and may be hard to sustain. Left and right parties reacted differently, with some accusing the government of undermining long-term fiscal logic. Motorists and drivers for businesses should watch pump prices and official announcements for the timing and scope of any tax cut.
Government vows ISP cut if fuel rises 10 cents

Context & Explainers

- Prime Minister, Portugal: 2024 - Present
- Party: Social Democratic Party (PSD)
Luís Filipe Montenegro Cardoso de Morais Esteves (born February 16, 1973, in Porto) is a Portuguese lawyer and center‑right politician who has served as Prime Minister of Portugal since April 2, 2024. A long‑time member of the Social Democratic Party (PSD), he is the leading figure of the post‑Troika generation of Portuguese conservatives. Montenegro was elected to the Assembly of the Republic in 2002 for the Aveiro district and remained an MP for 16 years, becoming PSD parliamentary leader from 2011 to 2017 during the bailout and austerity period under Prime Minister Pedro Passos Coelho. He was a prominent defender of strict austerity measures, arguing in 2014 that “the life of the people is no better, but the life of the country is a lot better,” a phrase that has followed his public image since. After an unsuccessful leadership bid against Rui Rio in 2020, Montenegro won the PSD leadership in 2022. He then forged the centre‑right Democratic Alliance (PSD–CDS‑PP and allies), which won a plurality of seats in the 2024 legislative election. Refusing to partner with the far‑right Chega, which he has called “often xenophobic, racist, populist and excessively demagogic,” he formed a minority government as head of the XXIV Constitutional Government on April 2, 2024. His first government fell in March 2025 after a no‑confidence vote linked to a conflict‑of‑interest affair, but fresh elections saw the Democratic Alliance increase its seat share, allowing Montenegro to return as prime minister leading the XXV Constitutional Government. His importance to Portugal lies in attempting to re‑center the traditional centre‑right after the crisis years, defending liberal‑conservative economics and EU alignment while drawing a sharp line against formal cooperation with the radical right, thus shaping how Portuguese democracy manages its new multi‑party era.
Sources (8)
- Government's shake-up of the ISP "will only be sustainable up to a certain point"CNN Portugal · 5:50pm, 4 Mar 2026
- Government reintroduces discount on ISP if fuel prices rise by 10 cents or morePúblico · 5:45pm, 4 Mar 2026
- Fuel discount and millions from the bankObservador · 5:54pm, 4 Mar 2026
- Government admits to moving forward with discounts on ISPRTP Notícias · 5:17pm, 4 Mar 2026
- PCP accuses Government of submission to the USA and Israel and contributing to rising fuel prices by agreeing to lower ISPCorreio da Manhã · 5:45pm, 4 Mar 2026
- If there is a sudden increase in fuel prices, the Government commits to an extraordinary ISP discountExpresso · 4:43pm, 4 Mar 2026
- PM pledges to reduce tax on fuel if prices rise too highPortugal Resident · 4:41pm, 4 Mar 2026
- Government moves forward with ISP discount if fuel prices rise by more than 10 centsECO · 3:54pm, 4 Mar 2026



