Strait of Hormuz Crisis Flips Oil Markets From Surplus to Structural Deficit

A six-week U.S.-Israeli military conflict with Iran has closed the Strait of Hormuz to most commercial traffic, transforming global oil markets from an expected 3.8 million barrel-per-day surplus into acute deficit and driving Brent crude from $73 to peak levels near $128 in early April 2026.

The crisis, which began with coordinated airstrikes on 28 February under Operation Epic Fury, has disrupted approximately 20% of global crude oil flows and all major liquefied natural gas shipments through the strait. Though a ceasefire agreement announced on 8 April triggered a sharp price retreat—Brent falling to $91.72–94.77 per barrel by 9 April, down 13–15% from conflict highs—maritime intelligence indicates the waterway remains under what one firm termed a ‘supervised pause’ rather than full reopening.

Market Structure Inverted

The U.S. Energy Information Administration now projects Brent will average $115 per barrel in Q2 2026 before declining to $88 in Q4, assuming the conflict concluded by mid-April and gradual strait reopening. That baseline scenario stands in stark contrast to pre-conflict forecasts: the International Energy Agency had projected a substantial crude surplus of 3.8 million barrels per day throughout 2026.

Gulf region production shut-ins reached 9.1 million barrels per day in April, per the EIA, spanning Iraq, Kuwait, Saudi Arabia, the UAE, Qatar, and Bahrain. Iran’s own production capacity of approximately 3.2 million barrels per day remains offline. OPEC+ holds roughly 3.5 million barrels per day of spare capacity, concentrated in Saudi Arabia and the UAE, but most cannot reach global markets while the strait remains restricted, according to Kpler.

The cartel’s 1 March decision to increase output by 206,000 barrels per day starting in April—up from a planned 137,000 barrels per day—drew criticism as inadequate given the scale of supply loss. Energy analysts noted the modest increment does little when the primary bottleneck is physical access to shipping lanes, not production quotas.

Ceasefire Fragility and Price Scenarios

Goldman Sachs maintains an upside scenario in which Brent averages $120 per barrel in Q3 and $115 in Q4 if the strait remains mostly closed beyond mid-April. The bank stated it continues to see risks to its forecast as skewed to the upside. Macquarie Group assigns a 40% probability to war extending through Q2, with potential for prices to reach $200 per barrel if the strait remains shut until June.

Maritime intelligence suggests the strait has not returned to normal operations. Israeli airstrikes on Lebanon on 9 April, one day after the ceasefire announcement, raised immediate questions about durability. Josh Rubin, portfolio manager at Thornburg Investments, told CNBC there remains low visibility and limited predictability on whether the truce will hold.

Inflation Pressure and Policy Response

U.S. headline Inflation jumped to 3.3% year-over-year in March from 2.4% in February, with the energy component rising 10.9% month-over-month, according to data cited by FinancialContent. Retail gasoline prices averaged $4.11 per gallon as of 5 April, up from $3.25 in early March, and are forecast to peak near $4.30 in April.

The Federal Reserve has postponed rate-cut expectations in response. The 10-year Treasury yield climbed to 4.46% on 27 March, the highest level since July 2025, while the 30-year mortgage rate reached 6.38% on 26 March, per Wikipedia. Central banks face a classic stagflation dilemma: energy-driven inflation amid demand destruction that is already visible in Asia, where fuel shortages and government rationing have reduced consumption by an estimated 2 million barrels per day in March.

Beyond Oil: LNG and Commodity Cascades

The conflict has severed liquefied natural gas flows from Qatar, which declared force majeure on contracts following an 18 March Iranian strike on the Ras Laffan complex. That attack reduced Qatar’s LNG export capacity by 17%, contributing to a 140% surge in Asian spot LNG prices, according to the IEA.

The Gulf region accounts for 30–35% of global urea exports, 20–30% of ammonia, and 45% of global sulfur supply. Disruption to these flows threatens fertiliser production ahead of the Northern Hemisphere planting season, with knock-on effects for food prices. Semiconductor and electric vehicle supply chains face pressure from both energy costs and helium shortages—the strait region supplies a significant share of industrial helium.

What to Watch

The ceasefire’s durability will determine whether markets price in gradual normalisation or brace for a return to $120+ scenarios. Key indicators include resumed tanker traffic through the strait—verifiable via satellite and transponder data—and Iran’s willingness to clear reported sea mines laid during the conflict. Any renewal of IRGC attacks on merchant vessels would likely trigger immediate price spikes.

OPEC+ faces a credibility test. Saudi Arabia and the UAE hold the only meaningful spare capacity, but their ability to compensate depends entirely on strait access. If the waterway remains restricted beyond April, the cartel’s production decisions become largely symbolic.

For central banks, the conflict has compressed the timeline for policy decisions. If oil stabilises near $90 per barrel, inflation pressures may ease by Q3. If prices return to $120, rate cuts become untenable even as demand destruction accelerates. The March inflation data suggests energy pass-through to core prices is already underway.

China and India, which relied on the strait for 84% of crude imports in 2024 per the EIA, face the starkest adjustment. Beijing’s energy security strategy—already tilted toward Russian pipeline supplies—will likely accelerate, reshaping Asian energy alliances for the next decade regardless of how quickly the strait reopens.