Iran and Oman Negotiate Fee-Based Transit Regime for Strait of Hormuz, Challenging Freedom of Navigation

For decades, the global economy has relied on a simple maritime guarantee: ships carrying the fuel that powers the world can pass through the Middle East's most critical chokepoint for free. That era of unhindered transit is now on the verge of collapse. As the dust settles from a devastating naval war that effectively closed the Strait of Hormuz in late February, a new geopolitical reality is taking shape. The waterway is no longer just a geographic feature; it is being actively converted into a negotiated, administered institution.[2]

Iran and Oman are in the final stages of negotiating a joint management and transit regime that would fundamentally alter how commercial vessels navigate the strait. According to diplomatic sources and Iranian state media, the two nations have already agreed on the geographic coordinates for a new shipping corridor. The proposed framework would split traffic, directing inbound ships through a northern route managed by Tehran and outbound ships through a southern route coordinated by Muscat.[1][3]

The most contentious element of the negotiations is the introduction of a payment structure for transit. Tehran has aggressively pushed for a mandatory toll, reportedly demanding a levy of 5% to 7% of the total cargo value for ships using the strait. For a Very Large Crude Carrier (VLCC) holding over $170 million worth of oil, such a fee would add millions of dollars to a single voyage, costs that would immediately cascade down to global consumers.[3]

In an attempt to soften the blow and avoid a unilateral Iranian toll, Oman has presented a Gulf-backed counter-proposal. Muscat's plan suggests a "voluntary" service fee of around 3%, tied to navigational support, environmental impact management, and security personnel deployment. The revenues from this service fee would theoretically be split evenly between the two coastal states.[2][3]

However, maritime analysts warn that a "voluntary" fee in a highly militarized zone is a distinction without a difference. Given the persistent threat of vessel seizures and the presence of Iran's Islamic Revolutionary Guard Corps (IRGC) Navy, shipping companies and their insurers are likely to treat any suggested fee as a de facto mandatory toll required for safe passage.[2]

At the heart of the dispute is a clash over international maritime law, specifically the United Nations Convention on the Law of the Sea (UNCLOS). The Strait of Hormuz, which is just 21 miles wide at its narrowest point, consists entirely of the overlapping territorial waters of Iran and Oman. Under UNCLOS, such waterways are governed by the regime of "transit passage," which guarantees all ships the freedom of navigation without suspension or mandatory tolls.[8]

Neither Iran nor the United States has ratified UNCLOS, though the U.S. treats its provisions on navigation as customary international law. Iran, conversely, argues that the strait is governed by the more restrictive regime of "innocent passage," which allows coastal states to demand prior authorization for certain vessels, including warships. By establishing a formal administrative body—the Persian Gulf Strait Authority—Tehran is attempting to institutionalize its interpretation of the law, converting a disrupted corridor into a state-administered permit regime.[6][8]

The exact legal mechanism Iran and Oman will use to justify the fees remains a point of intense negotiation. While Oman ratified UNCLOS in 1989, it included declarations reserving the right to take necessary measures to protect its security interests. Whether Muscat is willing to formally breach the transit passage regime to secure a deal with Tehran is one of the primary unknowns holding up a final agreement.[4][8]

The international backlash to the proposed fee structure has been swift and severe. The United Nations and the International Maritime Organization have reiterated that there is no legal basis for introducing mandatory tolls simply to transit an international strait. Allowing a toll in Hormuz would set a dangerous precedent, potentially encouraging other nations to gatekeep strategic waterways like the Malacca Strait or the Bab el-Mandeb.[4]

The United States has drawn a hard line against the negotiations. The Trump administration, which has maintained a naval blockade in the region since the outbreak of hostilities, insists on a complete return to the pre-war status quo of full, toll-free, and unrestricted navigation. Washington has explicitly rejected any framework that grants Tehran administrative control or financial windfalls from the strait.[4][7]

The diplomatic pressure campaign has escalated into direct threats. President Donald Trump recently issued a stark warning to Oman, a traditional U.S. ally and regional mediator, threatening military action if Muscat finalizes the joint-management plan with Iran. Despite the rhetoric, regional experts see little realistic prospect of Oman abandoning the talks, as Muscat bears direct responsibility for vessel traffic management and desperately needs a framework to prevent further environmental and economic catastrophes on its shores.[9]

For its part, Tehran has made it clear that the pre-war order is dead. Iranian officials emphasize that any reopening of the strait must take place under a new security architecture that acknowledges Iran's dominance over the northern corridors. The bilateral arrangement with Oman is being treated as entirely separate from any broader ceasefire negotiations with the United States, which remain stalled over Washington's refusal to lift its blockade of Iranian ports.[7]

As the diplomatic standoff drags on, the economic toll continues to mount. Prior to the conflict, approximately 20% of the world's liquefied natural gas and a quarter of its crude oil flowed through Hormuz. Today, traffic remains severely depressed. While some vessels have begun utilizing a U.N.-authorized route closer to the Omani coast under the protection of the U.S. Navy, the volume is a fraction of pre-war levels.[5]

The uncertainty surrounding the transit regime is already warping global supply chains. Major energy exporters in the Gulf, including QatarEnergy, have warned European and Asian buyers of extended delivery delays stretching into the autumn. Until the rules of the road are definitively settled—whether through a negotiated toll, a voluntary fee, or a forced return to free transit—the Strait of Hormuz will remain a bottleneck threatening the stability of the global economy.[2]