Shipping executives watch nervously as Tehran signals a possible shift in how vessels traverse the Strait of Hormuz. Under the United Nations Convention on the Law of the Sea, outright tolls are prohibited, yet the law permits charges for specific services. Iran has never levied fees on commercial traffic before the recent conflict, leaving traders uncertain about any upcoming cost structure.

If Tehran opts to bill ships for pilotage, navigation aid maintenance, or security escorts, the fees could become a de‑facto toll despite the legal wording. Such charges would raise operating expenses for oil tankers and container lines that already factor fuel price volatility into freight rates. Investors may see tighter margins on routes that rely heavily on the Hormuz corridor.

Regulators in the Gulf Cooperation Council and European maritime agencies are likely to scrutinize any Iranian fee scheme for compliance violations. Shipping insurers could adjust premiums if perceived risk climbs, while charterers might reroute cargo through longer, costlier passages around the Arabian Sea. Iran therefore faces a trade‑off between revenue aspirations and the risk of disrupting one of the world’s busiest oil chokepoints.