Iran's Proposal to Collect Tolls in the Strait of Hormuz Violates Trade Norms

Why It Matters

Toll collection would undermine a core tenet of maritime law, potentially reshaping global shipping routes and inflating energy costs. It also risks channeling revenue to Iran’s military apparatus, heightening regional tensions.

Key Takeaways

• Iran seeks tolls on Hormuz ships as war‑ending condition
• Toll collection would breach UNCLOS freedom‑of‑navigation principle
• Experts warn tolls could set precedent for other strategic straits
• Gulf producers fear Iranian revenue would fund IRGC military
• Reopening Hormuz could restore 20% of global oil flow

Pulse Analysis

The Strait of Hormuz remains a chokepoint for roughly one‑fifth of the world’s oil, making any disruption instantly felt across markets. Iran’s recent 10‑point peace proposal includes a controversial toll‑booth scheme that would charge vessels for passage, a move that clashes with Article 17 of the United Nations Convention on the Law of the Sea (UNCLOS). While Iran and Oman have not ratified UNCLOS, customary international law still protects innocent passage, and experts warn that permitting tolls could erode a century‑old norm that keeps global trade routes open and predictable.

From an economic perspective, the cost of a $2 million toll on a super‑tanker translates to about $1 per barrel—seemingly modest for consumers but a substantial burden for Gulf producers who rely on Hormuz to export crude. The Bruegel think‑tank estimates that reopening the strait would immediately lower Brent crude, which has hovered near $95 per barrel after spiking to $118 during the conflict. Lower prices would also diminish the geopolitical windfall for Russia, whose oil demand surged amid sanctions. However, the toll revenue would likely flow to Iran’s Islamic Revolutionary Guard Corps, strengthening a group already designated as a terrorist organization by the U.S. and EU.

Beyond the immediate fiscal impact, the precedent of charging for passage through a strategic waterway could ripple worldwide. Scholars cite the risk that China might emulate the model in the Taiwan Strait, or that other narrow passages such as the Strait of Malacca could face similar fees, threatening the principle that "the sea doesn’t belong to anyone." Maintaining free navigation is therefore not just a legal issue but a safeguard for global supply chains, energy security, and the broader international order.