The war with Iran has become a battle about a tollbooth. Free seas are at risk

A New Era for Global Maritime Trade: The Hormuz Toll Dispute

The war with Iran has become – What began as a military campaign aimed at curbing Iran’s nuclear ambitions and dismantling its international terror infrastructure has evolved into something far more consequential. The ongoing conflict has transformed into a fierce contest for dominance over one of humanity’s most critical commercial arteries. The Strait of Hormuz, serving as a vital bottleneck for petroleum, natural gas, agricultural fertilizers, and numerous other essential commodities, now sits at the center of this geopolitical struggle.

The stakes could not be higher. Should this confrontation result in either Iran or the United States establishing permanent authority over the strait, it may mark the twilight of free navigation across international waters—a principle that has facilitated worldwide commerce for countless generations. Erik Grundt, a senior analyst at consultancy Rystad Energy, warned CNN that this development could establish a troubling precedent, potentially inflating costs for international maritime commerce, expenses that would eventually cascade down to everyday consumers worldwide.

The Immediate Aftermath of Conflict

When American and Israeli forces initiated their offensive campaign on February 28, Tehran responded with remarkable speed by announcing the closure of the strategic waterway. This decisive action triggered what historians would later identify as the most significant disruption to global oil supplies in recorded history. Recognizing this newfound leverage over the international economic system, Tehran has demonstrated considerable determination to maintain its advantage.

Commercial vessels seeking to navigate through the narrow passage now face a difficult choice: they must either coordinate their movements with Iran’s recently created Persian Gulf Strait Authority—a process that may involve substantial financial contributions—or risk coming under fire from the nation’s elite Revolutionary Guard Corps military forces.

“This could set a dangerous precedent and make international seaborne trade much more expensive, a cost that would ultimately be passed on to end-consumers,” Erik Grundt told CNN.

The Diplomatic Dance Continues

Although the collection of transit fees experienced a temporary suspension following Iran’s signing of a sixty-day Memorandum of Understanding with American representatives on June 18, Tehran’s grip on maritime passage never truly loosened. Rather than retreating, Iranian officials seized upon a specific provision within the agreement that required Tehran to “make arrangements… for the safe passage of commercial vessels,” using this language to justify and solidify their continued control.

On Tuesday, Iranian authorities asserted that over two hundred non-Iranian ships had coordinated with their Persian Gulf Strait Authority during the three-week period following the agreement’s ratification, though independent verification of this assertion remained elusive. Meanwhile, the Trump administration interpreted the same clause as guaranteeing unrestricted passage for all vessels throughout the sixty-day window.

Navigation activity certainly increased during this period, with approximately seventy vessels successfully traversing the strait daily at the peak of the post-agreement period—representing roughly half of the pre-conflict daily throughput. However, renewed tensions have dramatically reduced this flow to merely a dozen vessels on Sunday alone.

The Tollbooth Becomes a Precedent

President Donald Trump briefly mirrored Iran’s approach by announcing that American commercial vessels would face a twenty percent surcharge for utilizing US protective efforts within the Hormuz corridor—a proposal he withdrew less than one full day after announcing it on social media platforms. According to shipping industry association BIMCO, this proposed fee would have represented approximately twenty-seven million dollars for each voyage undertaken by a very large oil tanker.

Despite what many considered an unreasonable price tag, Trump’s announcement inadvertently validated Iran’s own actions—an irony that the Iranian regime promptly highlighted with characteristic sarcasm on social media channels. Iranian foreign minister Abbas Araghchi responded on Monday, stating on platform X that “20% is of course too much,” while adding that “We will be fair.”

“Forget the legal arguments, insurers will settle this first,” said Nigel Green, CEO of financial advisory giant deVere Group.

Insurance and International Law Concerns

Rob Thummel, senior portfolio manager at Tortoise Capital, observed that if toll collection becomes the new normal for maritime passage, shipping expenses could experience significant increases. While the financial burden represents a genuine concern, it may not prove to be the most critical issue. Reports indicate that Iran had been collecting between one and two dollars per barrel from oil tankers, generating approximately two million dollars for each Very Large Crude Carrier.

However, even if shipping companies demonstrated willingness to make these payments, insurance providers might refuse coverage to vessels engaging with sanctioned entities, which encompasses several major Iranian financial institutions. Nigel Green emphasized that insurers would likely address this matter before legal arguments could be fully developed, noting that combining toll collection with sanctions exposure could cause underwriters to simply cease writing new policies.

Even if neutral third parties like Oman collected these fees on behalf of Iran, such arrangements would likely still violate international maritime regulations, particularly the United Nations Convention on the Law of the Sea, providing insurers with grounds to cancel voyages or terminate existing coverage agreements.

A Broader Geopolitical Implications

Beyond the immediate economic concerns, a more profound worry exists: that the monetization of Hormuz passage could establish a template for other strategic maritime chokepoints worldwide. This precedent might encourage nations ranging from Indonesia and Singapore to China, Taiwan, and the United Kingdom to weaponize their geographic positions in similar fashion.

Across ten major global maritime bottlenecks—including Hormuz, Gibraltar, the Taiwan Strait, Dover, and Malacca—potential annual revenues from passage fees could fundamentally reshape international commerce patterns and alter the balance of power between maritime nations and those controlling critical waterways.