Geopolitics2026-05-16★★★★★

Iran Announces Strait of Hormuz Toll, Deepening Global Energy Supply Chain Instability

Iran announced a new control system and a plan to impose fees for vessel passage through the Strait of Hormuz. This is escalating Middle East geopolitical tensions to a peak, and exerting additional upward pressure on already unstable international oil and LNG prices. Major energy importing countries such as Japan are seeking to secure alternative supply chains, but short-term supply disruption concerns are expected to be unavoidable.

What Happened

On May 16, 2026, the Chairman of Iran's Parliament Security Committee announced that a transit system for vessels passing through the Strait of Hormuz would soon be unveiled, which would include the imposition of fees. This effectively declares the "monetization" of the Strait of Hormuz, further escalating tensions in the strait, which has been in a state of "de facto closure" due to Iranian measures since last month. Major energy importing countries like Japan have already been exploring alternative measures, such as procuring Middle Eastern crude oil through ship-to-ship transfers, since LNG supplies via the Strait of Hormuz were halted.

Why It Matters

The Strait of Hormuz is a critical maritime chokepoint, handling approximately 20% of global seaborne crude oil shipments and approximately 30% of LNG shipments. Iran's latest announcement is interpreted as more than just imposing transit fees; it is effectively a measure that restricts the freedom of international maritime navigation and maximizes geopolitical risks in the Middle East. With the recent US-China summit concluding without substantial results, hopes for an easing of tensions in the Middle East have been dashed. Coupled with Iran's strengthening of its independent diplomatic stance, there is an increased likelihood of a renewed surge in oil prices. US President Trump's remark, "A war with Iran is worth the economic pain," further fuels this tense situation. Iran has a history of making similar threats that have caused fluctuations in international oil prices, making the actual implementation of this measure and the international community's response a matter of keen interest.

Impact on the Korean Market

The imposition of transit fees and increased control over the Strait of Hormuz will exert direct inflationary pressure on the Korean economy. This is because Korea imports most of its crude oil and LNG from the Middle East, and an increase in maritime transport costs will directly lead to a rise in domestic energy prices. This could exacerbate the production cost burden on companies and be passed on as price increases for final consumer goods, negatively impacting overall inflation. In particular, the refining and petrochemical industries may face difficulties in production planning and margin management due to deepening instability in crude oil supply and demand and increased transportation costs. Conversely, increased geopolitical uncertainty is likely to stimulate safe-haven asset preference, driving up GOLD prices. The KRW/USD exchange rate is expected to face upward pressure due to increased energy import costs and risk-aversion sentiment.

Key Stock Analysis

WTI Crude (WTI), Brent Crude (BRENT): Iran's imposition of transit fees and increased control over the Strait of Hormuz will maximize crude oil supply uncertainty, triggering a surge in international oil prices. This will exacerbate inflationary pressures across the global economy and could hinder economic growth in energy-dependent countries. (sentiment: negative)
Gold (GOLD): As geopolitical risks in the Middle East escalate, safe-haven asset preference strengthens, and gold prices are expected to maintain upward momentum. Investors are likely to flock to gold to preserve asset value during uncertain times. (sentiment: positive)
S-Oil (010950), SK Innovation (096770): Rising international oil prices increase refiners' inventory valuation gains and can positively impact refining margin improvement. However, if instability in the crude oil supply chain deepens, uncertainty regarding crude oil procurement increases, which could act as a risk factor in the long term. (sentiment: positive)
Korea Gas Corporation (036460): Korea relies on the Middle East for a significant portion of its LNG imports. The imposition of transit fees and increased transportation costs in the Strait of Hormuz will raise Korea Gas Corporation's LNG import costs, negatively impacting its performance, which could lead to upward pressure on domestic city gas rates. (sentiment: negative)
Korean Air (003490): Jet fuel accounts for a significant portion of airline operating costs. Rising international oil prices will directly increase Korean Air's jet fuel purchase costs, acting as a factor that deteriorates profitability. (sentiment: negative)

Future Scenarios

The international community's reaction to Iran's latest measure will be a crucial variable in determining future scenarios. If major countries such as the United States and the European Union strengthen diplomatic pressure on Iran, or if discussions on UN-level sanctions take place, the possibility of Iran backing down cannot be ruled out. However, if Iran maintains its hardline stance, actually imposes transit fees, and strengthens maritime control, international oil prices could exceed $100 per barrel in the short term, which would deepen concerns about a global economic recession. Investors should pay close attention to Iran's specific transit fee imposition methods, supply and demand trends in the international crude oil and LNG markets, and the diplomatic responses of major countries. Inventory levels and transportation contract terms of energy-related companies will also be important monitoring points.

Impact analysis

CommodityWTI Crude Oil

📉Headwind

Iran's announcement of imposing tolls on the Strait of Hormuz will maximize crude oil supply uncertainty, triggering a surge in international oil prices. This could exacerbate inflationary pressures across the global economy and hinder economic growth in energy-dependent nations.

CommodityBrent Crude Oil

📉Headwind

Similar to WTI Crude Oil, Iran's increased control over the strait will exert direct upward pressure on Brent crude prices. This could lead to higher energy costs and inflation in regions that primarily use Brent crude, such as Europe.

CommodityGold

📈Beneficiary

As geopolitical risks in the Middle East escalate, safe-haven demand is expected to strengthen, driving gold prices to continue their upward momentum. Investors are likely to flock to gold to preserve asset value during uncertain times.

S-Oil

📈Beneficiary

Rising international oil prices could increase inventory valuation gains for refiners and positively impact refining margins. However, if crude oil supply chain instability deepens, uncertainty regarding crude procurement could increase, posing a long-term risk.

SK Innovation

📈Beneficiary

Similar to S-Oil, rising international oil prices could positively impact SK Innovation's refining segment performance. However, crude oil supply-demand instability could increase cost volatility and add to raw material cost burdens for the petrochemical segment.

Korea Gas Corporation (KOGAS)

📉Headwind

South Korea relies heavily on the Middle East for a significant portion of its LNG imports. The imposition of tolls and increased transportation costs in the Strait of Hormuz will raise Korea Gas Corporation's (KOGAS) LNG import costs, negatively impacting its performance and potentially leading to upward pressure on domestic city gas rates.

Korean Air

📉Headwind

Jet fuel constitutes a significant portion of airline operating costs. Rising international oil prices will directly increase Korean Air's jet fuel procurement costs, acting as a factor that deteriorates profitability. While these costs may be passed on through increased passenger and cargo fares, short-term profitability pressure is unavoidable.