Iran Formalizes Strait of Hormuz Toll System as Shipping Industry Weighs Blockade Economics

Iran Formalizes Strait of Hormuz Toll System as Shipping Industry Weighs Blockade Economics Iran coordinated the transit of 26 vessels through the Strait of Hormuz on Wednesday, May 21, two days after announcing the formation of the Persian Gulf Strait Authority (PGSA), which will charge transit fees reportedly reaching $2 million per vessel. The move transforms the world's most critical energy chokepoint from an outright blockade into what analysts describe as a "militarized economic gateway," creating an unprecedented arbitrage calculation for shipowners and energy traders. Before the U.S.-Israeli airstrikes on Iran on February 28 triggered the conflict, between 120 and 140 ships traveled through the strait daily, approximately half of them oil tankers carrying 20 million barrels of crude—roughly 20% of global oil and LNG exports. Traffic collapsed 95% following Iran's March 4 closure of the waterway, stranding approximately 1,550 vessels from 87 countries on both sides of the strait, according to U.S. Central Command. The PGSA, established on May 19, requires vessels to submit IMO numbers, cargo manifests, crew lists, and ownership details to Islamic Revolutionary Guard Corps intermediaries. Ships from Malaysia, China, Egypt, South Korea, and India have transited under the new regime, with fees payable in Chinese yuan or cryptocurrency. First toll revenues have been deposited in Iran's central bank, according to Iranian state media reports Wednesday. Israel-linked vessels are banned entirely, while U.S.-linked ships face severe restrictions. The economic math is stark. For the roughly 2,000 ships that were stranded in early March, remaining anchored costs continue mounting—crew wages, loan repayments, maintenance, and inflated war risk premiums. Iran's reported $2 million transit fee works out to approximately $1 per barrel for a typical 2-million-barrel VLCC cargo. At Wednesday's Brent price of $104.52 per barrel, the toll represents less than 1% of cargo value. "From an economic perspective, a negotiated transit arrangement now makes more sense than continued closure," Mohammad Reza Farzanegan, an economist at Germany's Marburg University, told Al Jazeera on Wednesday. "The geography gives Iran significant leverage, and the recent crisis has shown that Tehran can use control over the Strait of Hormuz in practice." Lost oil revenues from the closure amount to $114.8 billion per day based on pre-war flow rates of 20.3 million barrels per day, according to calculations using Joint Organisations Data Initiative figures. An additional 10 billion cubic feet per day of LNG, worth $7.8 billion, also transited the strait during peacetime. However, political and legal barriers complicate purely economic decisions. The U.S. Treasury's Office of Foreign Assets Control has warned that toll payments could trigger secondary sanctions. "The companies are under pressure from U.S. sanctions and not to make arrangements with Iran," Nader Habibi, an Iranian American economist, told Al Jazeera on Wednesday. "This is not just a purely economic cost-benefit analysis, but long-term considerations." Meanwhile, U.S. forces continue enforcing a counter-blockade on Iranian ports. On Tuesday, May 20, U.S. Marines boarded and redirected the Iranian-flagged tanker M/T Celestial Sea in the Gulf of Oman, bringing total vessel redirections to 91 since the blockade began in mid-April. What to Watch: Pakistan's interior minister arrived in Tehran on Wednesday for his second visit in a week, potentially signaling renewed diplomatic efforts. Any formal U.S.-Iran agreement on strait transit rules would eliminate legal ambiguity around toll payments, though Washington has repeatedly rejected Iran's proposed fee structure in previous negotiations. June crude delivery schedules for Asian refiners will reveal whether Wednesday's 26-vessel transit represents sustained normalization or remains sporadic movement. --- Sources: 1. Research Arc Synthesis + Sources — 2. 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