Iran eyes $40bn Strait of Hormuz toll regime as tanker traffic fragments

On the afternoon of 25 June 2026, three commercial ships — at least two of them oil tankers — turned back while attempting to leave the Strait of Hormuz through a route that hugs the Omani coast, the corridor that has, since Iran's near-total closure of the waterway earlier in the month, become the de facto escape valve for global crude flows. Bloomberg's reporting, relayed through the Liveuamap and War and Freedom witness channels at 15:27 and 15:40 UTC, described vessels making U-turns after Iranian authorities instructed them to change course. Hours later, US Secretary of State Marco Rubio told reporters there was "zero support from gulf countries for tolls or fees on Strait of Hormuz" — a public rebuttal of a Tehran revenue scheme that, in the same 24-hour window, was being pitched as capable of generating as much as $40bn a year. The episode crystallises the contest now underway: who sets the terms of passage through the strait, and who pays.

The practical question is whether the strait reverts to its pre-war status as an open international waterway policed by a loose combination of Omani and Iranian naval coordination, or whether it becomes the world's first peacetime toll regime over a chokepoint carrying roughly a fifth of seaborne oil. The Iranian proposal — formally, a basket of fees for "security, safety, and environmental services" — and the open defiance of it by Gulf monarchies and Washington point to a slow fragmentation rather than a clean resolution in either direction.

What happened on the water on 25 June

The 15:40 UTC Bloomberg item, carried by the Liveuamap channel, is unusually concrete: "at least three ships, including two oil tankers, turned back while attempting to cross the Strait of Hormuz via a route parallel to the coast of Oman." The War and Freedom witness feed added the operational detail, citing the same Bloomberg reporting — that vessels using what the channel called the "new evacuation route along Oman's coast" were being instructed by Iranian authorities to alter course, and that several appeared to comply by reversing direction. The phrasing of the original wire was not a flat statement that Iran had ordered the ships to stop; it was that the ships turned back, and that Iranian instructions were part of the picture. That distinction matters for how the incident will read in subsequent shipping advisories, where operators make insurance and routing decisions.

By the same evening, a separate but related signal was moving through tanker markets. An account that follows maritime flows reported that "oil tankers are being lured back into the Strait of Hormuz by big payouts," an apparent reference to the surge in war-risk premia and transit fees being offered to vessel owners willing to make the run. The structure of that market — small bonuses to owners, much larger costs to charterers and refiners — is the mechanism by which Iran's bargaining power translates into revenue, with or without a formal toll regime.

The $40bn question

The revenue claim originated with a Clash Report wire item at 14:47 UTC, citing Iranian sources: "Tehran says the plan could generate up to $40 billion annually" through charges for "security, safety, and environmental services" in the strait. That figure is large enough to be worth interrogating. A back-of-envelope benchmark: roughly 20% of seaborne oil — the conventional estimate of Hormuz throughput in a normal year — equates to somewhere in the low-to-mid billions of barrels annually. Even at aggressive per-barrel fee assumptions, $40bn implies either a fee level that would dwarf the per-mile cost of running crude through alternative pipelines (the UAE's Habshan-Fujairah, Saudi Arabia's East-West Petroline, Iraq's planned alternative), or a base throughput that is not consistent with current traffic levels, which have been compressed by the closure and the U-turns recorded on 25 June. The Iranian claim should be read as the upper bound of an opening negotiating position, not as a forecast.

The Rubio line — "zero support from gulf countries for tolls or fees" — frames the politics, but it does not by itself frame the economics. The Gulf monarchies have an interest in any regime that constrains Iran. Iran's leverage rests on geography, on the short coastline along the strait's north shore, and on the residual naval capability it has retained after the spring war. Those are structural facts the toll debate will run into.

The diplomatic layer: Tehran, Muscat, and the new corridor

A separate 15:40 UTC Reuters wire, distributed by the @Reuters account, reported that Iran's foreign minister and his Omani counterpart had used a phone call to "stress the need for coordination on Strait of Hormuz traffic." Oman is the key Gulf intermediary: it controls the southern shore of the strait, hosts the existing exclusion zone around its port of Sohar, and has historically mediated between Tehran and Western shipping insurers. The framing of the call — coordination, not confrontation — suggests an effort to give the Omani-coast evacuation route a quasi-official character, with Tehran and Muscat jointly setting traffic rules for vessels that previously moved through Iranian-controlled waters.

If that coordination holds, the strait effectively becomes a two-track system: a normal Iran-side lane under Iranian naval management, and an Omani-coast lane under joint management. The latter is what the Bloomberg reporting on 25 June described as the new exit route, and the Omani foreign minister's call is the diplomatic scaffolding for it. Iran's toll ambition sits awkwardly inside that picture: a fee regime presupposes a single transit authority, and what is being built is a bypass.

The energy-price read

The BBC's energy desk reported at 07:11 UTC on 25 June that oil prices had fallen to levels not seen since before the Iran war, attributing the drop to the implicit reopening of transit as Iran responded to US and Israeli attacks by "effectively closing the Strait of Hormuz" and then, under the pressure of tanker payouts and a slow resumption of movement, allowed partial flows to resume. The price action is the cleanest single signal: a market pricing in transit risk falling back toward zero. That is, in turn, the metric that will determine whether Iran's toll scheme has any commercial traction. If shipowners continue to be paid enough to run the strait without a formal fee, the Iranian government's pitch collapses. If payments thin out and the price of crude stays soft, Tehran has more reason to formalise the charges — to collect, in effect, the war risk premium that is currently being paid to private owners.

The structural read: the strait is being slowly repriced. The price discovery is happening not in a single tariff schedule but in the spread between war-risk premia, alternative-route pipeline tariffs, and the implicit insurance value of Omani-coast transit. Iran is trying to convert the latter into the former. The Gulf states and Washington are trying to keep the spread wide enough that the conversion fails. The 25 June U-turns are a tactical skirmish in that contest; the $40bn figure is the strategic claim staked in the ground.

What remains uncertain

Three things the reporting on 25 June does not settle. First, the precise sequence of events on the water — whether the Bloomberg-cited U-turns were ordered by Iran, requested by shipowners, or driven by pilots reading the diplomatic signals from the Iran-Oman call that landed the same hour. Second, the durability of the Omani-coast bypass: it works as long as Tehran tolerates a transit channel that diverts revenue from its own waters, and that tolerance is a function of bargaining leverage Iran does not always control. Third, the destination of the $40bn: Iranian state media framing positions the fees as legitimate compensation for security services; Western and Gulf framing positions any such charge as a unilateral tax on global trade. The legal status of either framing is unresolved and will not be resolved by 25 June's headlines.

Desk note: The wire on 25 June arrived in fragments — three Telegram channels, a Reuters distribution, a BBC energy summary, and a single Rubio quote on X. The thread pulls them into a single picture of a chokepoint being repriced in real time, and is more useful to readers than any one of the component items in isolation.

Wire provenance

This editorial synthesis draws on the following public wire/social posts:

• https://t.me/Liveuamap
• https://t.me/wfwitness
• https://t.me/ClashReport
• https://t.me/unusual_whales
• https://t.me/unusual_whales
• https://t.me/Reuters