The International Energy Agency now expects the global oil market to move into surplus in the fourth quarter of 2026 as exports from the Gulf recover. The shift is a forecast, not a declaration that fuel markets have returned to normal. In its November Oil Market Report, published on November 13, the IEA said crude supply had overtaken demand for the first time since the outbreak of the war in Iran, while diesel availability remained severely constrained.
The change from the agency's view a month earlier is sharp. Its October report projected a deficit through year-end and warned that middle-distillate supplies could stay tight well into 2027. The November balance instead points to a fourth-quarter surplus and a larger build next year. For borrowers, governments and investors exposed to oil, that revision changes the central scenario. It does not remove the risk that attacks on shipping or energy infrastructure interrupt the recovery.
What changed in the supply balance
The IEA estimated global oil supply at 105.4 million barrels a day in October, up 2.3 million barrels a day from September. Production had risen by 5.3 million barrels a day since August. Gulf exports drove much of the increase despite continued attacks on tankers and infrastructure, according to the November report. These figures describe the agency's estimate of flows already observed or assessed for October; they should be kept separate from its projections for later quarters.
Gulf oil exports excluding Oman reached 18.4 million barrels a day in October, still 26% below the level before the war. Crude shipments accounted for 15 million barrels a day, equivalent to 82% of their pre-war level. The rebound was large enough for the IEA to raise its fourth-quarter global supply estimate by 3.3 million barrels a day from the previous report. That revision is the main reason a deficit forecast became a surplus forecast in the space of a month.
The comparison with October is useful. The October report described a strong September recovery but kept its year-end projections largely unchanged because security concerns had intensified. It said refined-product and liquefied petroleum gas shipments from the Middle East were recovering much more slowly than crude flows. The November assessment incorporates another month of high Gulf exports and a substantially different outlook for the remainder of 2026. It shows how quickly an oil balance can change when shipping routes and production recover from disruption.
The agency still expects supply to average 4.8 million barrels a day below 2025 levels for 2026 as a whole. It projects a 6.6 million-barrel-a-day rebound in 2027, to an average of 108.1 million barrels a day. Those annual numbers mix months of severe disruption with a later recovery. Reading the October run rate as if it were the full-year average would overstate the improvement already achieved.
Inventories provide a narrower signal
Observed global oil inventories rose by 52 million barrels in October, their first monthly increase since June, according to the IEA's November figures. Oil held on water increased by 86 million barrels as Gulf exports accelerated. On-land inventories continued to fall, however, and remained at their lowest level since at least 2016. OECD total stocks declined by 47 million barrels. The location of the barrels therefore matters as much as the headline increase in observed stocks.
Oil on water can represent cargoes in transit rather than readily available fuel at the point of consumption. A larger seaborne inventory may be a necessary stage in rebuilding supply, but it does not immediately replenish tanks near refineries or customers. The IEA also calculated a cumulative 462 million-barrel decline in observed global stocks since the war began. October's increase was meaningful, yet it replaced only part of the earlier loss.
That distinction helps explain why a projected quarterly surplus can coexist with high freight costs and tight local markets. A global accounting balance combines regions and products. Delivering the right barrel to the right refinery, and then moving the resulting fuel to users, takes ships, secure routes and processing capacity. If one of those links remains constrained, a surplus in aggregate crude supply may provide limited relief to a diesel-dependent importer.
Crude prices fell, diesel stayed expensive
The November report said North Sea Dated crude had fallen 32% from an early-October high of $136 a barrel to about $93 at the time of writing. It was still $22 a barrel above its pre-war level. European diesel prices declined by 11% over the same period but remained close to $180 a barrel, or 77% above pre-war levels. These are different markets and different price benchmarks. A lower crude quote cannot be used as a direct estimate of the fall in transport or heating costs.
Refining adds another bottleneck. Global refinery runs fell by 1.3 million barrels a day in October to a seasonal low of 81.3 million barrels a day. The IEA expects runs to recover to 84.7 million barrels a day in December. It said record freight costs weakened margins at many Asian refineries, while US refiners benefited from cheaper crude. The agency also identified persistent attacks on Russian energy infrastructure and losses from the Middle East as constraints on diesel exports.
In October, the IEA had already warned that global diesel exports in September were 700,000 barrels a day below a year earlier. Its October analysis found that lower output from Russia and the Middle East outweighed increases elsewhere. The November report says product supply, especially diesel, is still the broader market's main concern. The agency expects accelerated releases of emergency diesel stocks to bridge part of the gap while refinery output recovers.
For an importer, the difference between crude and diesel is a balance-sheet issue. A transport company buys fuel, not an abstract global crude balance. A government may face pressure to cushion consumers even when benchmark crude falls. A refinery can benefit from stronger product margins in one region while losing them to freight costs in another. The market therefore needs product-level and regional evidence before treating the IEA's surplus forecast as general disinflation.
Demand remains weak
The IEA expects world oil demand to fall by 2.7 million barrels a day in 2026 to 102.3 million barrels a day, according to its November report. It forecasts a 2 million-barrel-a-day recovery in 2027. Demand in the fourth quarter is still projected to be 2.7 million barrels a day below a year earlier, although that decline is smaller than the average contraction during the second and third quarters.
The agency attributes much of the prospective 2027 gain to petrochemical feedstocks, including LPG, ethane and naphtha, as disrupted supply chains normalize. It expects only a modest increase in transport-fuel use because high prices, greater fuel efficiency and vehicle electrification restrain road demand. This matters for the durability of a surplus. If supply returns faster than demand, inventories can rebuild; if demand recovers faster or supply suffers another shock, the balance can tighten again.
The outlook remains unusually sensitive to physical security. The IEA explicitly warned that attacks on shipping threaten the recovery needed for a sustained surplus. Its November forecast also lowered 2027 supply because of constrained Iranian shipments. These conditions argue against reading one month's revision as a stable long-term price path. The next reports will need to show whether Gulf exports persist, on-land stocks rebuild and product supply catches up.
Analyst's View
Producer and sovereign credit: Lower crude prices could narrow revenue for oil exporters and producers if they persist. That would matter most for borrowers whose budgets or debt-service plans assumed a prolonged price spike. The November report does not quantify fiscal effects by country, so credit work should test different realized prices, export volumes and shipping costs rather than assume a uniform impact. Export volumes may rise even as prices fall, leaving the net revenue effect country-specific.
Importer and corporate credit: Diesel-intensive transport, agriculture and industrial borrowers may see less relief than a crude-only view suggests. The relevant stress tests use local product prices, currency moves and freight charges. Governments that subsidize fuel face a similar distinction: a fall in crude benchmarks helps only as it passes through to the products and locations covered by their support schemes. October's continued decline in on-land stocks makes that pass-through uncertain.
Market positioning: The IEA's reversal from a year-end deficit to a projected fourth-quarter surplus weakens a simple scarcity thesis for crude. It leaves a separate case for tight middle distillates and high logistics costs. Investors should track the spread between crude and diesel, Gulf export continuity, refinery throughput and the distribution of inventories. A durable surplus would require more than barrels at sea; it would require accessible stocks and sustained product deliveries.
