Macquarie Sees Oil Surplus by Year-End as US Election Pressures Trump Toward Iran Deal

Macquarie’s Surplus Warning: A Timeline of Diplomacy and Barrels

Analysts at Macquarie are warning that global oil markets could tip back into surplus before the end of 2026, propelled by a US push to de-escalate tensions with Iran. With less than 100 days until midterm elections that will determine control of Congress, the White House is under intense domestic pressure to curb gasoline prices—now above $4 a gallon—and tame the inflation that tops voter concerns. The result, Macquarie strategist Vikas Dwivedi told Bloomberg, is that “de-escalation takes weeks, not months,” and the window for a bearish oil trade is rapidly closing as election day approaches.

The numbers are stark: Macquarie projects daily inventory builds will begin in the final quarter of the year, reaching a surplus of 2 million barrels per day, and then double over the first three months of 2027. This swing would unwind the tightness that has gripped the market since the effective closure of the Strait of Hormuz and the broader US-Iran military standoff. President Trump has paused hostilities to allow diplomacy, and expectations are growing that any deal will include concessions—possibly tolls on strait transit—while continuing to deny Tehran access to frozen assets.

For a global oil market that has priced in prolonged supply risk, the shift in assumptions could be swift. Iran, which extracted concessions during a now-lapsed ceasefire, faces the threat of a renewed American military campaign after the elections if no deal is reached, giving both sides incentives to move quickly. Macquarie’s timeline suggests traders should not wait for the actual barrels to reappear; the mere credible prospect of a deal is enough to reprice risk.

Why the Election Window Is Reshaping the Oil Market Calculus

Macquarie’s Surplus Expectation and Its Underpinnings

The forecast of a 2 million bpd surplus by Q4 depends on a rapid diplomatic breakthrough that allows Iranian crude to re-enter global channels. Macquarie is not predicting an immediate flood—logistics and sanctions unravelling take time—but the combination of a political ceasefire, relaxed tanker tracking, and Iraqi or Gulf mediation could restart flows within weeks. The doubling of the surplus in early 2027 amplifies the impact, suggesting that even a gradual return of barrels would overwhelm demand growth that remains modest amid slowing economies.

The Election Calculus as a Negotiation Accelerator

The midterm election deadline is the story’s engine. Trump’s desire to hold Congress clashes with an unpopular military engagement and petrol-driven inflation. Macquarie’s Dwivedi explicitly ties the sell-off opportunity to the election date: the trade’s viability runs out as tensions ebb and flows resume. This creates a window where political expediency could override foreign-policy hawks, forcing a deal that both sides can spin as victory—Washington gets price relief, Tehran averts a post-election escalation.

Iran’s Painful Dilemma and the Hormuz Variable

Iran’s economy remains battered by war, and its leadership faces the choice of a deal now that offers economic breathing room but limited financial rewards, or holding out and risking a more devastating US campaign after November. The Strait of Hormuz, while no longer fully shut, remains a chokepoint; any agreement would need to address transit security, with reported US concessions possibly including fees that legitimize Tehran’s control while keeping frozen funds out of reach. This delicate balance means the surplus path is real but prone to last-minute derailment if hardliners on either side scuttle talks.

Positioning for an Oil Market Turn: From Traders to Households

• Oil traders and hedgers should price in a rapidly compressing geopolitical risk premium. With Macquarie signaling a 2 million bpd Q4 surplus, the balance of risks in Brent and WTI is shifting from upside supply-shock scenarios to downside inventory-build pressure. Option strategies that benefit from a decline in volatility and a softening of backwardation become relevant as election day nears.
• US refiners and fuel distributors could face lower input costs if crude prices retreat, but margins may compress if product prices fall faster. Firms should review crude procurement contracts to take advantage of any potential lifting of Iranian sanctions on counterparties, while monitoring compliance risks during the transition.
• Energy-consuming industries and logistics firms that have been budgeting for elevated fuel costs—airlines, shipping, trucking—can begin modelling a scenario where jet fuel and diesel prices drop by 10-15% by year-end if the surplus materializes, easing operating cost pressures.
• Policy watchers and investors in Iranian-exposed assets must track the daily rhetoric from Washington and Tehran in the coming weeks. A confirmed framework deal would likely trigger a sharp initial sell-off in oil, potentially testing $75 Brent, and open a narrow investment window in beaten-down Iranian equities or the rial before sanctions relief is fully priced.