Economic Impact Analysis of Prolonged Strait of Hormuz Closure

The narrow waterway between Iran and the Arabian Peninsula has long been the most critical artery in the global energy system. Now, two weeks into its effective closure, the world is discovering just how dependent it remains on this 21-mile-wide passage — and how unprepared it was for its loss.

The Trigger

On February 28, 2026, joint U.S.-Israeli military strikes on Iran set off a chain of events that has produced the most severe energy supply disruption since the 1973 oil crisis [1]. In retaliation, Iran launched missile and drone attacks on U.S. military bases and Israeli territory, while its Islamic Revolutionary Guard Corps declared the Strait of Hormuz closed to all vessel traffic [2]. IRGC commanders vowed that "not a litre of oil" would pass through the waterway [3].

The threat was quickly backed by force. Iranian naval mines, anti-ship missiles, and drone attacks on commercial vessels brought tanker traffic to a near-total halt within days [4]. Shipping activity through the strait fell by as much as 90 percent, with over 150 ships anchoring outside the chokepoint to avoid the danger zone [5]. By early March, transit had dropped effectively to zero for non-Iranian vessels.

The Scale of What's Missing

The numbers paint a stark picture. Approximately 20 million barrels of crude oil and petroleum products transit the Strait of Hormuz each day under normal conditions — roughly one-fifth of global oil consumption and more than one-quarter of all seaborne oil trade [6]. In 2024 and early 2025, an estimated 84% of the crude moving through Hormuz was destined for Asian markets, with China, India, Japan, and South Korea accounting for a combined 69% of all Hormuz crude flows [6].

But the disruption extends far beyond crude oil. Qatar, the world's largest LNG exporter, ships virtually all of its liquefied natural gas through the strait. Europe receives 12% to 14% of its LNG from Qatar [7]. Perhaps most consequentially for the long-term global outlook, roughly one-third of all seaborne fertilizer trade passes through the Hormuz chokepoint, including massive volumes of nitrogen-based products essential for global agriculture [8].

Source: FRED / Federal Reserve Economic Data

Data as of Mar 11, 2026CSV

The Oil Price Shock

The market response has been immediate and severe. WTI crude, which traded in the mid-$60 range in the days before military operations began on February 28, has surged past $94 per barrel as of March 9, according to FRED data [9]. Brent crude breached $100 per barrel on March 12, reaching $101.59 — the first time the international benchmark has crossed that threshold since 2022 [10].

The trajectory is alarming. With a net daily supply shortfall of approximately 15 million barrels — accounting for the small volumes Iran itself continues to ship to China — analysts warn the worst may be ahead [11]. If the blockade persists through the end of March, major investment banks project Brent could surpass $130 per barrel, matching the all-time highs of the 2007-2008 oil shock [12]. Some extreme scenarios model prices as high as $200 to $300 per barrel in a prolonged, total closure [3].

U.S. gasoline prices have already responded. The national average neared $3.50 per gallon as of the second week of March, up nearly 50 cents in a single week — the sharpest weekly increase in years [13].

The Strategic Reserve Response

Recognizing the severity of the crisis, the International Energy Agency on March 11 authorized the largest-ever coordinated release of emergency oil stockpiles: 400 million barrels from 32 member and partner nations [14]. The United States committed to releasing 172 million barrels from its Strategic Petroleum Reserve, with Energy Secretary Chris Wright indicating the full U.S. release would take approximately 120 days [15].

The response, while historic in scale, has done little to calm markets. Traders quickly calculated that even the full 400 million barrel release could offset only a fraction of the roughly 15 million barrels per day in net supply loss [10]. At the current rate of disruption, the entire emergency release would be consumed in less than a month. As CNBC reported, Brent crude closed at $100 the very day the IEA announced the record drawdown, with markets signaling that the reserves are a palliative, not a cure [15].

The Bypass Problem

Saudi Arabia and the UAE possess the only operational pipeline infrastructure capable of routing crude around the strait. Saudi Arabia's East-West Pipeline (Petroline) connects the kingdom's eastern Gulf coast at Abqaiq to the Red Sea port of Yanbu, with a total design capacity of approximately 7 million barrels per day [16]. The UAE's Abu Dhabi Crude Oil Pipeline (ADCOP) runs from Habshan to the Indian Ocean port of Fujairah, with capacity of approximately 1.8 million barrels per day [16].

Together, these systems offer an estimated 3.5 to 5.5 million barrels per day of available bypass capacity — meaningful, but nowhere close to replacing the 20 million barrels per day that normally transits Hormuz [17]. The ADCOP pipeline was operating at 71% utilization before the crisis, leaving around 440,000 barrels per day of immediately available spare capacity [17]. Even at maximum throughput, the bypass infrastructure can soften the blow but cannot prevent a global supply shortfall of historic proportions.

Asia: The Epicenter of Pain

The crisis is hitting Asia with particular force. Japan, which imports 75% to 90% of its oil through the strait, faces the most severe exposure of any major economy [18]. A sustained closure would widen Japan's trade deficit sharply, weaken the yen, and risk tipping the economy toward stagflation. South Korea sources roughly 60% of its crude and 30% of its LNG through Hormuz, making it the most vulnerable major economy in gas terms [18].

India faces the largest combined exposure in the region, with more than half of its LNG imports Gulf-linked and approximately 60% of its oil imports flowing from the Middle East [18]. The downstream effects are already materializing: fertilizer producers in India and Bangladesh have shut down plants after Qatari LNG supplies were suspended [8].

South Asia faces an especially acute disruption. Qatar and the UAE account for 99% of Pakistan's LNG imports, 72% of Bangladesh's, and 53% of India's [7]. For these economies, the strait's closure is not merely an energy inconvenience — it is an existential threat to industrial production, power generation, and food security.

Source: EIA / CNBC / Analyst estimates

Data as of Mar 13, 2026CSV

The Fertilizer Time Bomb

While oil prices dominate the headlines, the fertilizer disruption may prove to be the more consequential long-term economic threat. Gulf countries produce approximately 20% of global phosphate fertilizers and supply roughly one-quarter of global sulfur — essential for processing phosphate into forms plants can absorb [8].

The benchmark price of urea, the world's most widely traded fertilizer, has surged approximately 30% since the conflict began [19]. At the Port of New Orleans, urea prices climbed more than 25% in the first two weeks of March [19]. Oxford Economics has raised its fertilizer price forecast by approximately 20% for the second quarter of 2026 [20].

The ratio of urea prices to corn prices is approaching record levels, creating what analysts describe as a severe affordability crisis for farmers worldwide [19]. The pattern echoes the 2022 fertilizer shock that followed Russia's invasion of Ukraine, when countries in Sub-Saharan Africa — including Côte d'Ivoire, Kenya, Nigeria, and South Africa — experienced the steepest crop yield declines [19]. Those same vulnerable nations face a repeat scenario.

The Macro Outlook: Stagflation and Recession Risk

Economists are rapidly revising their forecasts. Forecasters have raised U.S. 2026 inflation projections by 0.8 percentage points, to 2.9%, while trimming GDP growth forecasts by 0.3 percentage points, to 2.2% [12]. Goldman Sachs has increased its U.S. recession probability by 5 percentage points, to 25% [13].

But those numbers assume a relatively contained crisis. Claudio Galimberti, chief economist at Rystad Energy, offered a blunter assessment: "The world is not going to be able to withstand the closure of the Strait of Hormuz; not just the United States, it's the entire world that would be brought into pretty much a recession" [13].

Capital Economics has warned that sustained oil prices in the $90-$100 range risk driving up inflation and slowing economic growth across major economies [5]. The pattern is classically stagflationary: rising energy costs simultaneously push up prices and depress output. For Europe and East Asia, the drag is expected to be "substantial," while the U.S. faces a "moderate" stagflationary impact — assuming prices do not spike materially further [12].

If they do, the consequences deepen sharply. At $130 or above, analysts project outright recession in major oil-importing economies and "meaningful damage to U.S. economic prospects" [12]. The cascading effects through supply chains — from petrochemical-dependent Asian garment manufacturing to energy-intensive European industry — would amplify the direct energy cost shock.

What Comes Next

The crisis has exposed a structural vulnerability that decades of warnings failed to adequately address. Despite growing U.S. energy independence, the global oil market remains deeply interconnected. American consumers are not insulated from a disruption that primarily affects Asian supply chains, because crude oil prices are set on a global market.

Rerouting vessels around the Cape of Good Hope could add two weeks to delivery times for goods that typically transit the strait, straining port infrastructure and pushing freight rates and insurance premiums sharply higher — some by more than tenfold [7]. For many commodities transiting the strait to Asian and European markets, inventories typically cover only a few weeks, meaning shortages could emerge rapidly if disruptions persist [5].

The military situation remains fluid. The U.S. military has acknowledged it is "not ready" to escort oil tankers through the strait [21], and Iran's new supreme leader has vowed to keep the waterway closed for the duration of the conflict [22]. Diplomatic efforts continue, but the economic damage is accumulating daily.

Every week the strait remains closed costs the global economy billions in lost trade, elevated energy costs, and disrupted supply chains. The 1973 oil embargo lasted approximately five months and reshaped the global energy landscape for a generation. The current crisis, now entering its third week, has already produced price movements that rival those historic shocks — with no clear end in sight.