What if the Strait of Hormuz closes by 2027: How will oil prices, inflation, and global asset markets be reassessed?

July 27, 2026, the global oil market saw violent fluctuations. According to Gate market data, WTI crude was at $84.62 per barrel, down 2.46% over the past 24 hours; Brent crude was at $87.41 per barrel, down 1.79%. Just days earlier, Brent crude’s September contract briefly broke through the $100 mark, reaching $100.08 per barrel. Behind this price swing is the knock-on effect triggered by the de facto closure since late February 2026 of the world’s most important oil transport corridor—the Strait of Hormuz. Once a waterway carrying about one-fifth of global traded oil and natural gas, its traffic volume has now fallen to below 45% of pre-war levels.

Market focus has shifted from “when will the strait reopen” to “if reopening is delayed until 2027, where will oil prices go.” This issue not only concerns the pricing logic of energy markets, but will also profoundly affect the global inflation path, central bank monetary policy, and the valuation framework for various risk assets.

Strait of Hormuz: the world’s “lethal throat” for energy markets

The Strait of Hormuz lies between Oman and Iran, connecting the Persian Gulf and the Indian Ocean, and is the most critical chokepoint for global oil shipping. According to an assessment by the U.S. Energy Information Administration, about 10% of global seaborne crude oil trade and 8% of liquefied natural gas trade pass through this narrow waterway. Around 15 million to 17 million barrels of crude oil per day are exported via the strait, accounting for nearly one-third of total global seaborne oil trade.

The strategic value of this waterway lies in its irreplaceability. Around the Persian Gulf, Saudi Arabia, Iraq, Kuwait, the UAE, Qatar, and Iran itself—almost all of their crude oil exports rely on the Strait of Hormuz. Once the passage is disrupted, alternative routes are extremely limited: onshore pipeline capacity is far too insufficient to make up for the seaborne shortfall, while rerouting around Africa’s Cape of Good Hope would add thousands of kilometers to voyages, sharply increasing both transportation cost and time.

The direct trigger for the current crisis can be traced back to February 28, 2026, when Iran carried out retaliation against U.S.-Israeli military action and blocked commercial shipping. Since then, the contest between the U.S. and Iran over control of the strait has continued to escalate. Since mid-July, U.S. forces have carried out strikes for multiple consecutive days on Iran’s military footholds along the Strait of Hormuz, with highly concentrated targeting, aiming to systematically strip Iran of the ability to control the strait militarily. Iran’s Islamic Revolutionary Guard Corps, meanwhile, continues to exercise control over about 240k square kilometers of sea area in the Persian Gulf and the Strait of Hormuz through nonstop patrols and monitoring. Iran has stated clearly that any vessel that does not accept and comply with the order and regulations set by Iran cannot pass through the Strait of Hormuz.

Why the reopening timeline has been pushed to 2027

Multiple institutions have pushed their expectations for the Strait of Hormuz to resume normal operations to 2027. According to Kpler’s forecast, the strait will remain closed through the end of 2026, and may even extend into 2027, marking the most severe global oil flow disruption in decades. Goldman Sachs’ pressure scenario also assumes that Gulf production will not fully recover until December 2027. In its June Short-Term Energy Outlook, the U.S. Energy Information Administration expects that even if shipping gradually resumes in the third quarter of 2026, production and trade patterns will not return to a state broadly similar to pre-conflict until early 2027.

The core reasons for the delay can be summarized across several dimensions:

The persistence of geopolitical conflict and “zero-sum” logic. The struggle for the Strait of Hormuz has compressed the U.S.-Iran rivalry from a negotiable, multi-issue bargaining framework into a “zero-sum game.” Iran’s leadership has shown no intention to restore pre-war shipping conditions. Foreign Minister Al Aragchi has taken an “eye for an eye” principle, vowing to respond with “strong and decisive” measures to any infrastructure attack. House Speaker Kalibaf has also stated explicitly that the situation at the strait “will not return to pre-war conditions,” insisting that Tehran has the right to manage traffic and even possibly charging fees for this waterway, which had previously been exempt from tolls. On the diplomatic front, Gulf countries are increasingly pessimistic about finding a solution, and Pakistan’s mediation has achieved no publicly visible progress.

Continuous escalation of military action. As of July 24, U.S. forces have carried out strikes against Iran for 13 consecutive nights. Trump had previously said that whenever Iran fires on ships in the Strait of Hormuz, the U.S. would bomb and destroy an Iranian bridge or power plant. Although Trump ordered U.S. forces to pause strikes on the day of July 24, the situation remains highly uncertain.

Threats to the second chokepoint. The supply crisis is spreading from a single route to multiple routes. The Iran-backed Yemeni Houthi forces have announced a blockade of shipping through the southern end of the Arabian Peninsula’s Bab el-Mandeb Strait and its related Saudi routes, posing a direct threat to Saudi Arabia’s alternative export routes after the Strait of Hormuz is shut. Goldman Sachs data shows that over the past 30 days, the average daily crude oil flow through the Bab el-Mandeb Strait has been close to 9 million barrels, of which about 4 million barrels lack alternative routing capacity. If the Strait of Hormuz, the Bab el-Mandeb Strait, and the Suez Canal are all simultaneously obstructed, global crude oil flows will face a hard supply gap.

Is the oil price increase sustainable?

The current oil price trend is driven by multiple factors, and its sustainability depends on how these factors evolve.

Rigid constraints on the supply side. Persian Gulf flows have fallen below 45% of pre-war levels, lifting the Brent futures curve above baseline forecasts. In the second quarter, estimated global oil inventories fell by more than 3 million barrels per day, with OECD diesel inventories and strategic petroleum reserves particularly low. The U.S. Energy Information Administration estimates that oil inventories decreased by an average of 5.1 million barrels per day in the second quarter, and will continue to fall by 2.2 million barrels per day in the third quarter. Global visible crude inventories have dropped to the lowest level within the year, with cumulative drawdowns of 409 million barrels since March. As the inventory cushion thins, the market’s sensitivity to any supply disruption has increased sharply.

A complex demand picture. The International Energy Agency expects global oil supply to average a decline of 3.7 million barrels per day in 2026. On demand, the U.S. Energy Information Administration forecasts that global oil consumption in 2026 will fall by 1.2 million barrels per day, mainly due to a 0.8 million barrels per day drop in OECD demand in the Asia-Pacific region. But in 2027, demand is expected to rebound, rising by 2 million barrels per day to 104.8 million barrels per day. The pace of recovery in Asian energy demand will be a key variable affecting oil price direction.

Divergent institutional forecasts. Goldman Sachs outlines three distinctly different paths for the market:

Base case—assuming geopolitical conditions in the Middle East ease and shipping gradually recovers: in the fourth quarter of 2026, Brent crude at $80 per barrel and WTI crude at $76 per barrel; in 2027, the Brent average price at $75 per barrel.

Extreme upside case—if shipping disruption through the Strait of Hormuz continues through 2027, Brent crude in the fourth quarter of 2026 could break above $120 per barrel, with the 2027 average holding at $100 per barrel; if the Bab el-Mandeb Strait and the Suez Canal are simultaneously locked down for a long period, oil prices could rise an additional $25 per barrel.

Downside floor case—if global supply expands beyond expectations and energy demand keeps shrinking, Brent could fall as low as $60 per barrel by end-2027, though the probability of this scenario is low.

Enverus’s forecast is more optimistic, expecting Brent crude to average about $110 per barrel in the second half of 2026, with a fourth-quarter peak near $117 per barrel, and to remain above $100 per barrel before the third quarter of 2027. S&P Global raised its 2026 Brent price assumption to $100 per barrel.

Goldman Sachs also notes that even without factoring in extreme geopolitical blockade, global crude will still face a supply-demand gap of 2.1 million barrels per day in the third quarter. The upside risk to current oil prices is considered significantly greater than the downside room.

What does a break above $100 for crude oil mean?

Brent crude broke above $100 per barrel on July 23, the first time it has touched this level since May. $100 is not only a psychological threshold, but also a trigger point for a chain of macroeconomic transmission mechanisms.

A renewed warming of inflation. Rising oil prices transmit to inflation through two channels: first, directly raising energy costs; second, indirectly pushing up prices of various goods through higher transportation costs. Bloomberg expects that a surge in oil prices will drive global inflation to 4.5% in the fourth quarter of 2026, far above 3.1% in the fourth quarter of 2025. The Middle East situation’s repeated disruptions have already fueled a rebound in inflation expectations. Although U.S. inflation slowed in June, Fed officials are worried that energy price increases will spread into more areas.

The monetary policy dilemma. Market expectations for the Fed have shifted from rate cuts to rate hikes—current market pricing indicates the Fed may not only not cut rates, but could even raise rates nearly twice. The Fed meeting on July 30 will be an important window for the market to test this expectation. If oil prices remain at high levels and force the Fed to maintain a tight stance, it would sharply contradict the market’s prior expectations for a rate-cutting cycle.

Redefinition of risk asset pricing. The impact of a break above $100 for oil differs significantly across asset classes. For gold, rising inflation expectations typically provide support, but if the Fed is forced to raise rates, higher real interest rates could put pressure on gold. For U.S. equities, higher energy costs would erode corporate profits, posing a direct hit especially to energy-intensive industries such as airlines and logistics. For crypto assets like Bitcoin, its “digital gold” attribute may attract more attention in an inflationary environment, but a macro backdrop of tighter global liquidity also poses a challenge.

It is worth noting that $100 is not the endpoint of this crisis. Goldman Sachs’ extreme scenario shows that if the interruption continues, Brent crude could break above $120 per barrel in the fourth quarter. This price level would imply that global energy markets are entering an entirely new pricing paradigm.

Conclusion

The crisis in the Strait of Hormuz has evolved from a one-off geopolitical shock into a persistent structural supply constraint. The blockage of daily crude exports of about 15 million barrels, combined with the synchronous risks in the Bab el-Mandeb Strait, the world’s historically low inventory levels, and a gradual recovery on the demand side, together form a complex picture of the energy market.

The divergence in forecasts by multiple institutions itself reflects the market’s high uncertainty today—ranging from Goldman Sachs’ $75 baseline to a $120 extreme upside, from Enverus’ $110 average to EIA’s $70 expectation. The spread exceeds $50. The core of this divergence lies in judgments about when the strait will reopen: will it gradually recover in the third quarter of 2026, or persist until end-2027?

Whichever path the situation ultimately follows, one point is already clear: the geopolitical risk premium in the global energy market has been structurally raised. For investors, understanding the evolution logic of the Hormuz crisis and its transmission paths through inflation and monetary policy to various assets has become a core topic for asset allocation in the second half of 2026.

FAQ

Q: How large is the impact of the Strait of Hormuz closure on global crude oil supply?

The Strait of Hormuz carries about 15 million barrels of crude oil exports per day, accounting for nearly one-third of global seaborne oil trade. Since the de facto closure in late February 2026, Persian Gulf flows have fallen to below 45% of pre-war levels, and the global oil inventory drawdown exceeds 3 million barrels per day. This is the most severe disruption in global oil flows in decades.

Q: What is the forecast range for oil prices in 2027 by international institutions?

Forecast divergence is significant. In Goldman Sachs’ base case, the 2027 Brent average is $75 per barrel, and in the extreme scenario the average is $100 per barrel. The U.S. Energy Information Administration forecasts the 2027 Brent average at $65 per barrel; Enverus expects Brent in 2027 to stay above $100 per barrel. The key divergence centers on the timing of when shipping through the strait will resume.

Q: How does a rise in oil prices affect the Fed’s monetary policy?

Rising oil prices push global inflation higher; Bloomberg expects global inflation to reach 4.5% in the fourth quarter of 2026. Market expectations for the Fed have shifted from rate cuts to rate hikes. If oil prices remain at high levels, the Fed may be forced to maintain a tightening stance, and the July 30 meeting will be a key observation window.

Q: Why can’t the Strait of Hormuz reopen for a long time?

Key obstacles include: the U.S.-Iran contest has been compressed from negotiable multi-issue talks into a “zero-sum game”; Iran’s leadership has no intention of restoring pre-war shipping conditions; continuous U.S. military strikes and Iran’s retaliation measures create a vicious cycle; and the Bab el-Mandeb Strait is also threatened at the same time, meaning alternative routes cannot be guaranteed safe. No substantive progress has been seen in diplomatic efforts.

Q: Which assets are most affected by crude oil breaking above $100?

Directly, energy-related assets, with transmission to global inflation and monetary policy. For U.S. stocks, higher energy costs erode corporate profits, and the impact on industries such as aviation and logistics is significant; for gold, inflation expectations provide support but rate-hike expectations create a suppressing effect; for crypto assets like Bitcoin, an inflationary environment may increase attention on its “digital gold” attribute, but tightening global liquidity also poses challenges.