The $100 Oil Trigger: Why Iran’s Hormuz Gambit Could Force a Global Recession

Roughly 20% of global oil consumption—20 million barrels per day—flows through the Strait of Hormuz, and Iran has reportedly begun restricting navigation through the narrow waterway following coordinated U.S. and Israeli strikes. Ships reported hearing radio broadcasts purporting to come from the Iranian navy announcing transit was banned, and tankers began avoiding the waterway.

Markets Price the Worst

Eurasia Group analysts told Reuters oil prices could rise $5-10 per barrel if the conflict continues, reaching $83 per barrel from the current $73 baseline. Barclays warned of starker outcomes: "Oil markets might have to face their worst fears on Monday. As things stand right now, we think Brent could hit $100, as the market grapples with the threat of a potential supply disruption."

Energy analyst Saul Kavonic from Horizon Minerals noted a full closure “could present a scenario three times the severity of the Arab oil embargo and Iranian revolution in the 1970s, and drive oil prices into the triple digits, while LNG prices retest the record highs of 2022.” JP Morgan estimates a full blockade could push international oil prices to $120-130 per barrel.

Iran possesses large stockpiles of mines and short-range missiles that could seriously disrupt traffic in the waterway, according to McNally. Only a small fraction of crude passing through the strait can be redirected—Saudi Arabia and the UAE have pipeline alternatives, but capacity is limited. About 2.6 million barrels per day of bypass capacity from Saudi and UAE pipelines could be available in a disruption event.

Insurance Markets Signal Panic

Shipping insurers moved with unusual speed to reprice risk. War risk premiums for vessels moving through the Gulf were typically around 0.25% of a ship’s insured value before the escalation, but brokers indicate premiums could increase by 50% in coming days. For the Strait of Hormuz specifically, premiums have jumped from approximately 0.125% of ship value to between 0.2% and 0.4%. According to the Korea International Trade Association, shipping costs could rise 50% to 80% above current rates even with alternative routes, while insurance premiums in the region have previously surged as much as sevenfold. Insurance firms warned clients that rates for ships transiting the Gulf could rise by 50% in coming days.

The 1973 Precedent—and Why This Could Be Worse

During the 1973 Arab oil embargo, the price of oil per barrel first doubled, then quadrupled, imposing skyrocketing costs on consumers and structural challenges to whole national economies, while the embargo’s coincidence with dollar devaluation suggested global recession was imminent. By the end of the 1973 embargo in March 1974, global oil prices had quadrupled from $3 per barrel to nearly $12.

In the United States, production, distribution and price disruptions from the 1973 shock “have been held responsible for recessions, periods of excessive Inflation, reduced productivity, and lower economic growth,” with some researchers regarding it as the first discrete event since the Great Depression to have a persistent effect on the U.S. economy. The price shock is reported to have shrunk the U.S. economy by approximately 2.5%, increased unemployment and inflation, and spun the economy into a severe recession lasting from 1973-1975.

The 1990 oil price shock during Iraq’s invasion of Kuwait was less extreme: lasting only nine months, the average monthly price rose from $17 per barrel in July to $36 in October, contributing to the early 1990s U.S. recession.

The Central Bank Dilemma

IMF analysis indicates a sustained 10% increase in oil prices would reduce global economic growth by 0.15 percentage points and increase global inflation by 0.4 percentage points. But the policy response matters enormously. Policymakers responding to inflationary pressures from oil shocks by raising interest rates risk causing deep recessions that wouldn’t occur without central bank intervention, and if only partially successful in controlling inflation, stagflation ensues.

Samuel Ramani, associate fellow at the Royal United Services Institute, warned that disruptions to Hormuz energy flows would have “severe inflationary effects for the global economy” as higher energy prices raise production expenses that companies pass along Supply Chains to consumers. Ali Vaez, director of the Iran project at the International Crisis Group, said closure of Hormuz would disrupt roughly one-fifth of globally traded oil overnight: "Prices wouldn’t just spike, they would gap violently upward on fear alone. The shock would reverberate far beyond energy markets, tightening financial conditions, fuelling inflation, and pushing fragile economies closer to recession in a matter of weeks."

Asia Bears the Brunt

About three-quarters of barrels flowing through Hormuz went to China, India, Japan and South Korea in 2025, with China receiving half its crude imports from the strait. Almost half of India’s crude oil imports and 60% of its natural gas supplies move through the Strait of Hormuz.

"What you would see is hoarding, especially by Asian countries that were big importers of oil and gas when they realized that Hormuz is closed,” McNally said. "You would see the mother of all bidding wars." Oil prices would have to rise high enough to trigger an economic downturn that reduces demand to balance the market, since “there just isn’t enough discretionary or elastic demand for oil.”

Marco Forgione, director general of the Chartered Institute of Export and International Trade, warned that supply delays at a time when manufacturing remains "just in time" would squeeze availability and cause price hikes. It could take months for supply chains to reset, with effects lasting through the end of the quarter and potentially into early summer.

What to Watch

Market open Sunday evening: Crude futures are expected to rise $5-7 per barrel when trading resumes at 6 p.m. ET Sunday as markets price in risk. If hostilities persist into Monday, analyst Vandana Hari expects a knee-jerk jump to $80.

The U.S. Strategic Petroleum Reserve: The Trump administration could tap the SPR if prices spike—the reserve currently holds about 415 million barrels. But analysts warn a full Hormuz crisis could outstrip offsets provided by strategic stocks.

OPEC spare capacity: OPEC’s spare capacity in July 1990 before Iraq invaded Kuwait was 5.2 million barrels per day. Today’s cushion is far thinner, limiting the cartel’s ability to compensate for Hormuz disruptions.

Duration matters: By the end of 1990, higher oil prices were associated with slowing output growth or deepening recession and higher inflation, and the slowdown continued into 1991 despite oil prices declining to pre-crisis levels. Air traffic in the region has ground to a halt and shipping flows through Hormuz are slowing.