Middle East Crisis Could Cut Portugal's Growth by Up to 1.5% as Energy Costs Rise

Portugal's economy faces fresh headwinds in 2026 as escalating conflict involving Iran threatens to reduce between 0.3 to 1.5 percentage points from annual growth, according to economic forecasters at the Universidade Católica Portuguesa. The warning comes as Lisbon grapples with rising energy costs and emergency spending obligations that could offset the surprise 2025 budget surplus that officials disclosed this year.

João Borges de Assunção, who coordinates the NECEP – Católica Lisbon Forecasting Lab, told Agência Lusa that every month of sustained conflict could shave 0.1 percentage points off GDP expansion. For Portugal—a nation that imports virtually all its energy—the arithmetic is stark: three months of elevated oil prices could subtract 0.3% from growth, while a year-long crisis might cost 1.5% or more.

Oil Shock Lands on Non-Producers

Unlike resource-rich neighbors, Portugal feels geopolitical tremors primarily through the petrol pump. Borges de Assunção emphasized that the damage flows "above all through the impact that rising oil prices have on countries that do not produce energy." When Brent crude climbs, Portuguese households see immediate increases at filling stations, supermarkets, and utility bills, crimping disposable income and eroding corporate margins.

The economist noted that high-frequency consumption indicators have not yet captured the slowdown, but he flagged a more insidious risk: deferred business investment. "If companies themselves, faced with this environment and potential increases in production costs, postpone investments they had planned, that is more worrying," he said. While consumers can catch up on delayed purchases once prices stabilize, a factory expansion or technology upgrade put on ice may never materialize, leaving a permanent dent in productivity.

Why This Matters

• Energy bills climbing: Portugal imports nearly all fossil fuels, making it acutely vulnerable to crude-price spikes tied to Middle East turmoil.

• Budget cushion under pressure: The government already deployed fuel-tax cuts to cushion consumers, and storm-relief spending remains unquantified.

• Investment at risk: Economists warn firms may postpone expansion plans, a setback harder to reverse than temporary dips in household spending.

Central Bank Unlikely to Tighten

Markets have speculated that renewed inflation pressure might prompt the European Central Bank (ECB) to reverse recent rate cuts, but Borges de Assunção dismissed that scenario. He argued the conflict carries a recessionary dimension that would instead push Frankfurt toward accommodation rather than tightening. "This episode in itself does not seem to justify an increase in policy rates," he said, adding that the ECB might even adopt a more dovish stance if growth slows sharply.

Instead, the economist suggested both Brussels and Lisbon use the crisis as a catalyst to rethink energy taxation. "There could be space to seize this opportunity and reconsider some of European and Portuguese energy policy, making temporary or permanent changes to the tax structure associated with energy goods," he observed.

Portugal's government has already moved on that front, trimming the ISP fuel tax to soften the blow for motorists. That relief, however, punches a hole in revenue projections at a time when other unplanned expenses are mounting.

2025 Surplus Provides Fiscal Buffer, But 2026 Challenges Ahead

Official figures from the Instituto Nacional de Estatística (INE) showed Portugal closed 2025 with a budget surplus of 0.7% of GDP, comfortably above the cabinet's 0.3% forecast. The unexpected cushion—worth roughly 0.4 percentage points—gives policymakers room to absorb the twin shocks of fuel subsidies and storm reconstruction without immediately breaching deficit rules.

However, the outlook for 2026 has darkened considerably. The government had penciled in a 0.1% surplus for 2026 before the storms and oil crisis hit. Even before these recent shocks, the NECEP forecasting unit had projected that 2026 would see a return to deficit, driven largely by national co-financing obligations under the Recovery and Resilience Plan (PRR). With mounting pressures from energy costs and reconstruction, that deficit now looks certain to widen.

Borges de Assunção welcomed the 2025 fiscal relief but cautioned against overconfidence. "Portugal does not need the fetish of surplus; it needs to continue lowering public debt," he said, noting that modest deficits are compatible with falling debt ratios as long as borrowing costs remain subdued and nominal GDP grows.

Quality Over Red Ink: How Deficits Are Spent Matters

The economist stressed that not all red ink is created equal: a deficit resulting from temporary disaster relief or productive investment is fundamentally different from one caused by "permanent spending increases or satisfying certain interest groups." "Using the excuse of crises to increase spending in other areas—that creates problems for Portuguese public finances in the long term," he warned. The litmus test, in his view, is whether outlays boost long-term growth potential or simply lock in higher structural costs.

Storm Damage Adds Wildcard to 2026 Budget

Storm-relief spending remains an open question, with damage assessments still incomplete. If the bill runs into the hundreds of millions of euros, the economist argued the cabinet "should present, without any concern, a supplementary budget." Transparency and a dedicated funding envelope, he suggested, would be preferable to squeezing emergency spending into existing appropriations and risking off-balance-sheet maneuvers.

What This Means for Portugal Residents in 2026

For households, the immediate effect is higher transport and heating costs, eroding purchasing power as the year unfolds. Drivers should expect pumps to stay elevated until geopolitical tensions ease, and electricity bills may follow suit if natural-gas prices climb in tandem.

Businesses face a tougher calculus. Firms with tight margins—restaurants, logistics operators, manufacturers—will see input costs rise and may pass those increases to consumers or cut discretionary spending on equipment and hiring. Job seekers in capital-intensive sectors such as construction or technology could find fewer openings if companies shelve expansion plans.

On the fiscal side, residents should brace for possible adjustments. If the deficit widens sharply, Lisbon may face pressure from Brussels to identify offsetting savings or revenue measures, though any austerity push would likely wait until the immediate crisis subsides. The silver lining: Portugal's 2025 overperformance buys time to manage the squeeze without triggering the automatic correction mechanisms that plagued the country during the eurozone debt crisis.

Policy Crossroads for 2026 and Beyond

The confluence of external shocks and domestic spending pressures places Portugal at a familiar crossroads: absorb short-term pain to preserve fiscal credibility, or deploy the surplus cushion to shield the economy and accept a return to deficit. Borges de Assunção's analysis suggests the latter course is defensible, provided the red ink funds resilience rather than recurring consumption.

Whether the Portuguese Cabinet can thread that needle—supporting households and infrastructure while keeping structural spending in check—will shape not only 2026's growth but also the country's long-term debt trajectory. With the ECB unlikely to tighten and markets still pricing Portuguese bonds favorably, the window for countercyclical policy remains open. How wide it stays depends on how long the oil stays expensive and how quickly reconstruction bills arrive.