Iran's proposal to formalize a toll system for the Strait of Hormuz in partnership with Oman threatens to permanently increase global energy costs, shifting the crisis from a temporary blockade to a structural economic challenge.
Iran's proposal to formalize a toll system for the Strait of Hormuz in partnership with Oman threatens to permanently increase global energy costs, shifting the crisis from a temporary blockade to a structural economic challenge.

(P1) Iran is advancing a plan with Oman to formalize a fee system for ships in the Strait of Hormuz, a move that threatens to institutionalize a new cost on the nearly 20 percent of global oil supplies that transit the waterway and creating chaos for global supply chains.
(P2) "There is no international agreement where tolls can be introduced for transiting international straits. Any such toll will set a dangerous precedent," an International Maritime Organization spokesperson said on April 9, according to Fox News.
(P3) Before the war, about 135 ships passed through the strait daily, but Iran claims only 26 transited on May 19-20 with assistance from the Islamic Revolutionary Guard Corps. Tehran is already charging informal tolls reported to be between $1 million and $2 million per vessel, according to Insurance Journal, formalizing a practice that began after the conflict escalated.
(P4) The proposal signals a strategic shift by Tehran to permanently alter the economics of the world's most important energy chokepoint, moving beyond a temporary military blockade to a potentially lasting administrative control. Its success now hinges almost entirely on Oman, whose participation would lend legitimacy to a framework the U.S. and its allies have deemed illegal under international maritime law.
While mediators from Pakistan and Qatar are shuttling between parties to broker an end to the war, with U.S. Secretary of State Marco Rubio acknowledging "some progress," Iran is simultaneously pushing to make its control over the strait a permanent financial reality. The discussions with Oman reportedly center on charging "fees for services" rather than "tolls for transit," a legal distinction aimed at circumventing the United Nations Convention on the Law of the Sea, which guarantees the right of passage.
The impact is already rippling through global logistics, extending far beyond energy. Medical supply companies like Gentell are facing significant disruptions, highlighting the broad economic consequences of the logjam. The crisis is causing price hikes and product shortages for everything from jet fuel to fertilizer, squeezing margins for companies reliant on stable global trade.
Oman's position remains the decisive factor. After initially rejecting the proposal, Omani officials are now in discussions over a potential share of the revenue, two Iranian officials told The New York Times. This shift from a firm rejection to quiet negotiation suggests the economic benefits may be compelling enough for Oman to reconsider its historically neutral stance. Muscat has not commented publicly on the latest talks, and its silence is amplifying uncertainty for shippers, insurers, and energy markets.
The U.S. remains firm in its opposition. "The straits need to be open without tolls," Rubio said, a position he reiterated on Friday. He warned that if Iran's model succeeds in Hormuz, it could be replicated in at least five other strategic waterways around the world.
For investors, the situation introduces a new kind of risk. A temporary blockade creates short-term price volatility, but a formalized, internationally contested fee system would embed a structural cost increase into global trade. Whether this is ultimately viewed as a manageable fee or an illegal toll to be resisted will determine the long-term impact on shipping routes, insurance premiums, and crude oil prices, keeping the Hormuz risk premium elevated for the foreseeable future.
This article is for informational purposes only and does not constitute investment advice.