INE's May Flash Reading Holds Portuguese Inflation at 3.3% YoY — Energy Products Carry the Tape at 13.2% While Food Decelerates

INE published its preliminary Índice de Preços no Consumidor estimate for May on Friday, 29 May, and the headline rate stayed pinned at 3.3% year-on-year — identical to April's reading. The flash tape, which the official destaque will confirm on 11 June, indicates that Portugal's disinflation path has flattened rather than resumed its downward arc, with two cross-currents doing most of the work below the surface.

The first is energy. Energy products lifted to 13.2% YoY in May, up from 11.7% in April, as fuel prices kept climbing and the ISP discount tape — Brussels has Lisbon trimming the discount by close to two cents from 1 June — left less cushion on the gasolina and gasóleo lines than a year ago. The second is food. Unprocessed food prices, which had driven much of the late-2025 step-up, eased in May, taking pressure off the cabaz das compras and helping anchor the core measure (CPI excluding energy and unprocessed food) at around 2.4%.

What the flash actually says

• Headline CPI: 3.3% YoY in May, unchanged from April.
• Energy products: 13.2% YoY versus 11.7% in April — a 1.5-point acceleration.
• Unprocessed food: down month-on-month relative to April, helping cool the food component.
• Core (excluding energy and unprocessed food): indicative reading around 2.4% YoY, broadly steady.

INE itself flags the estimate as provisional. The final destaque is due in mid-June and will carry the full sectoral breakdown, including services and durable goods, which were not detailed in the flash communication.

Why the energy line keeps the headline elevated

The energy lift is not primarily a wholesale-price story. Brent and TTF gas have been broadly range-bound through April and May. The driver is base effects and policy. Last May, the ISP discount on fuels was larger; with the 1 June step that brings the discount down to roughly six cents on petrol and 11.5 cents on diesel, the year-on-year comparison turns less favourable. Electricity prices, regulated by ERSE, have also moved upward on the indexed leg as wholesale costs cleared higher than the 2025 base period.

What this means for residents and expats

• Grocery budgets: The unprocessed food slowdown is real and visible — fresh produce, dairy and meat are no longer leading the cabaz higher month after month. Expect the gap between your 2025 and 2026 weekly grocery bill to widen more slowly from here.
• Fuel: With energy at 13.2% YoY, drivers should not expect petrol or diesel comparisons to improve until the autumn, when the 2025 base period itself rises and the year-on-year drag eases.
• Wage negotiations: A 3.3% headline still sits well above the ECB's 2% target. Public-sector workers and CCT collective-bargaining tables — including the Lusa acordo de empresa reopened by the new CA earlier in the week — will continue to anchor pay demands above 3%.
• Mortgage carry: With Euribor closing May higher across the three- and six-month tenors, persistent 3.3% inflation gives the ECB room to hold rather than cut through the summer, keeping the June crédito-habitação prestação step higher rather than lower.
• Pensions and IRS brackets: Portugal's pension and bracket updates are tied to multi-year inflation averages. A stalled disinflation path now feeds directly into the 2027 update calculation.

The shape of the rest of the year

The Banco de Portugal's March projection sees average inflation drifting toward 2.4% by year-end. Holding at 3.3% in May means the second half has to do all the work — and that work depends overwhelmingly on the energy line softening from the autumn onward. The 11 June destaque, with the full breakdown, will determine whether the BdP, the CFP and the CIP/ISEG May Barómetro now revising forecasts downward have to push their inflation paths up rather than further down.