You can't just slice up an international waterway, put up a digital toll booth, and expect the rest of the world to quietly scan their credit cards.
Yet, that's exactly what is happening right now in the Middle East. Iran has officially set up the Persian Gulf Strait Authority (PGSA), a brand-new bureaucratic entity designed to regulate, monitor, and tax the ships moving through the Strait of Hormuz. For decades, this narrow strip of water has been treated as a global highway. Now, Tehran wants it to look like a private driveway.
The pushback has been immediate and furious. Five Middle East Gulf states—Bahrain, Kuwait, Qatar, Saudi Arabia, and the United Arab Emirates (UAE)—have formally written to the International Maritime Organization (IMO). They aren't just complaining; they're telling member states to outright order their fleets to ignore the PGSA and its new transit routes.
This isn't a minor diplomatic spat. It's an existential fight over the rules of global trade. If Iran pulls this off, the legal framework governing every major maritime chokepoint on Earth could unravel.
The Legal Fiction of the PGSA
To understand why the Gulf states are losing their minds over this, you have to look at what Iran is actually demanding.
Vessels intending to pass through the strait now receive an email from info@PGSA.ir. To get a transit permit, ship operators must submit a detailed "Vessel Information Declaration" before they even arrive. We're talking about everything: legal ownership, exact cargo manifests, crew lists, insurance data, and precise routing plans.
If you play along, you get a permit. If you don't, you risk getting intercepted by the Islamic Revolutionary Guard Corps (IRGC) navy.
But the real kicker is the money. Iran wants a permanent toll system. They've floated numbers as high as a dollar per barrel of oil, or flat fees hitting $2 million for certain high-value transits. To try and bypass international laws that strictly forbid taxing ships in international straits, Iranian diplomats are trying to rebrand these tolls as "service fees" for navigation and security.
It's a clever semantic trick, but it doesn't hold water. Under the United Nations Convention on the Law of the Sea (UNCLOS), ships enjoy the right of transit passage. This means they can sail through international straits unimpeded and untaxed. Iran signed UNCLOS back in the day but never actually ratified it. Because of that, Tehran claims it isn't bound by the rules and can run the strait however it sees fit.
The neighboring Gulf states see this as a naked grab for both cash and geopolitical leverage. UAE presidential adviser Anwar Gargash didn't mince words on social media, calling Iran’s attempts to rewrite maritime boundaries nothing but "pipe dreams" born out of military desperation.
Trapping Ships in the Toll Booth
The Gulf states' letter to the IMO exposes a very specific danger regarding the route the PGSA is trying to enforce.
For nearly sixty years, traffic through the strait has relied on the Traffic Separation Scheme (TSS). It’s a proven, safe routing system that keeps inbound and outbound ships from colliding. Crucially, a huge chunk of those traditional shipping lanes runs right through Omani territorial waters. Oman actually ratified UNCLOS, meaning those lanes are legally protected for free navigation.
Iran's new PGSA map draws a massive 22,000 square kilometer zone of "military control" that cuts right across the territorial waters of both Oman and the UAE. The Gulf states warn that Iran's new designated route is intentionally designed to force merchant vessels away from safe international lanes and directly into Iranian territorial waters.
Once a ship is inside Iran's sovereign waters, the legal shield of transit passage gets incredibly murky. It makes it much easier for Tehran to demand those exorbitant "service fees" and legally justify seizing ships that refuse to pay.
It puts international shipping companies in an impossible bind. Do you comply with the PGSA, hand over sensitive data, pay an illegal fee, and risk falling into the crosshairs of US sanctions? Or do you ignore the PGSA, stick to the old routes, and risk getting your $100 million tanker boarded by the IRGC?
The Indian Dilemma and the Shadow Fleet
While the US and its Gulf allies are yelling a firm "no," some countries are already quietly bending.
Iran claims that nations like China and South Korea are already coordinating with the PGSA to keep their energy shipments moving. While Beijing hasn't publicly confirmed paying tolls, the IRGC has boasted that Chinese tankers are complying with the new regime. It makes sense for China; they import nearly 45% of Iran's oil through the shadow fleet market anyway.
Other nations are caught in a brutal gray area. Take India. New Delhi relies on the Strait of Hormuz for the vast majority of its oil and gas imports. A few Indian-flagged tankers have recently managed to sneak through the strait safely, and India denies paying any formal tolls. But the pressure is mounting. If the US decides that paying a PGSA fee constitutes a violation of global sanctions, any company that pays Iran for safe passage could find itself completely cut off from the western financial system.
Meanwhile, maritime logistics are shifting on the fly. Because shipping through the strait has become a terrifying gamble, ship-to-ship (STS) crude transfers are exploding outside the chokepoint. Sohar, a port in the Sultanate of Oman, has suddenly become a massive hotspot for these transfers. Traders are using ports outside the strait to mix and move cargoes, trying to mitigate the risk for buyers who refuse to buy oil on a Free on Board (FOB) basis inside the danger zone.
Saudi Arabia is leaning hard into its own backup plan, pumping more crude through its 7-million-barrel-per-day East-West Pipeline to load ships in the Red Sea instead of the volatile Arabian Gulf. But pipelines have capacity limits. They can't carry the entire world's energy needs.
Why Compliance is a Dangerous Precedent
The real danger here isn't just about higher oil prices or spiked insurance premiums, though Lloyd's of London is already taking massive hits for loss-of-hire claims. The real danger is the precedent.
Sultan Al Jaber, the head of the UAE’s main state oil company, nailed the core issue. He warned that if the international community accepts that a single country can hold the world's most critical chokepoint hostage for economic gain, freedom of navigation is effectively dead.
If Iran successfully normalizes a toll system in Hormuz, what stops Egypt from suddenly jacking up fees in the Suez Canal far beyond standard transit costs? What stops other coastal nations from declaring their own "maritime authorities" over international straits to extract billions from passing trade?
US Secretary of State Marco Rubio has already made it clear that a toll system is a total dealbreaker for the ongoing peace talks. The US Navy has gone as far as boarding and releasing Iranian tankers to signal that the oceans won't be carved up into private fiefdoms.
If you own, operate, or insure commercial vessels, you need to start preparing for an extended period of legal and physical gridlock in the Middle East.
- Audit your charterparty agreements immediately. Ensure your contracts have explicit, updated clauses detailing who bears the financial burden of unexpected war risk premiums, PGSA delays, or forced route deviations.
- Instruct operations teams to maintain strict alignment with Flag State guidance. Do not allow vessels to voluntarily submit data to info@PGSA.ir unless expressly authorized by your flag administration, as doing so can compromise your insurance coverage and spark sanctions liabilities.
- Maximize the use of alternative routing and STS hubs. Shift transits to safer regional hubs outside the strait, like Sohar or Salalah, to keep your assets clear of the contested 22,000 square kilometer PGSA zone until the IMO issues a formal regulatory framework.
