Iran charges Hormuz fees by July 31?

Prediction markets put the probability at 13%: Iran charges Hormuz fees by July 31. Currently, markets see this as unlikely (13% YES). Iran continues to insist on imposing an illegal toll scheme in the Strait of Hormuz despite Omani opposition to mandatory fees.

What’s Happening

Whether Iran charges Hormuz fees by July 31 hinges on a rapidly escalating diplomatic standoff over the world's most critical oil chokepoint. On July 8, 2026, Iran formally told the International Maritime Organization, the UN's shipping agency, that "parts of the Strait of Hormuz fall within the territorial waters of the Islamic Republic of Iran," asserting authority over vessels crossing the waterway. The submission came days after Iran rejected an Omani proposal to replace mandatory tolls with a voluntary "maritime services" fund financed by donations from shipping and energy companies. The dispute sits at the center of ongoing peace talks between Washington and Tehran, raising the stakes of any unilateral move before the deadline. [Insurance Journal, Jul 8]

Iranian officials have publicly committed to the charges while framing them as service fees rather than tolls. Ambassador to China Abdolreza Rahmani Fazli told the World Peace Forum in Beijing on July 4 that new fees would apply, but that China and other "friendly" countries would receive "special considerations," describing the arrangements as collaboration with Oman. A separate Iranian official stated, "As a country where the Hormuz is part of its territorial waters, we will definitely charge service fees." The declarations directly contradicted President Donald Trump, who claimed in late June that Iran had promised not to impose such charges. Analysts at the Institute for the Study of War caution that Iranian control would let Tehran "selectively determine which vessels may pass through the strait and at what cost," a detriment to global commercial interests. [Al Jazeera, Jul 5]

The structural factor determining whether Iran charges Hormuz fees by July 31 is the gap between rhetoric and enforcement. Despite repeated statements of intent, no collection mechanism has been operationalized, and Omani opposition plus US objections complicate any near-term rollout. Whether Iran charges Hormuz fees by July 31 depends on Tehran moving from IMO filings and forum speeches to an actual, enforced levy on transiting ships within the window — a step it has not yet taken. [Institute for the Study of War, Jul 5]

Traded on Polymarket — $56K Volume

Lower-volume market on Polymarket ($56K). Wider spreads expected — enter with limit orders and be aware of slippage risk. Currently 13c YES.