Iran moves to formalize Strait of Hormuz tolls as permanent economic weapon

Iran’s parliament is finalizing legislation to impose formal transit tolls on ships passing through the Strait of Hormuz, transforming ad-hoc wartime fees into permanent economic infrastructure that threatens to embed a structural cost increase across global energy and shipping markets.

The bill, expected to be completed next week according to Bloomberg, would charge commercial vessels up to $2 million per voyage for transiting the strait — a 33-kilometer-wide chokepoint that handles approximately 20 million barrels of oil per day, or 21% of global supply. The move converts what Iranian officials initially framed as wartime revenue into codified state policy, weaponizing control over the world’s most critical energy corridor.

“We are pursuing a proposal in which Iran’s sovereignty, control, and oversight in the Strait of Hormuz are formally recognized in law, and through the collection of tolls, a source of revenue is also created for the country,” an Iranian lawmaker told the state-affiliated Fars news agency.

Market impact already visible

Oil markets absorbed the shock in real time. Brent crude surged 50% in three weeks following the strait’s closure, peaking at $126 per barrel before settling around $92 currently — still $20 above pre-conflict levels, according to the International Energy Agency. The geopolitical risk premium embedded in current pricing ranges from $8 to $14 per barrel, meaning Brent would trade between $74 and $80 under normal conditions, per analysis from The Middle East Insider.

Shipping insurance costs spiked over 300% in March, with war-risk premiums now ranging from $500 to $1,500 per twenty-foot container. Gulf oil producers face physical constraints: Saudi Arabia lost access to approximately 60% of its pre-war export capacity, while Iraq and Kuwait began curtailing production in early March due to storage saturation — cutting global supply by at least 10 million barrels daily, per House of Saud data.

Historical scale and Asian vulnerability

The current disruption dwarfs the 1973 oil embargo, which removed 4.5 million barrels daily from markets. Today’s Hormuz closure eliminates 20 million barrels — with 80% of that volume destined for Asian economies, per the Federal Reserve Bank of Dallas. The strait also handles 19% of global LNG trade (112 billion cubic meters annually) and 28% of LPG volumes, making the chokepoint critical for both energy and petrochemical feedstocks.

“This is the biggest disruption to the oil markets that you can imagine,” said Neelesh Nerurkar, former Trump Energy Department official now at Columbia University, in comments to CNN. “The shortfall is so large that the measures available are dwarfed by how much oil is not reaching the market.”

Emergency response falls short

The IEA activated emergency oil releases for an unprecedented sixth time on March 11, authorizing 400 million barrels from member reserves. Yet the volume pales against the scale of disruption. The Trump administration responded by lifting Sanctions on 140 million barrels of Iranian crude at sea via General License U, effective March 20 through April 19 — a policy reversal that critics argue funds Tehran’s military operations while offering minimal market relief.

Alternative bypass routes offer no scalable solution. The East-West Pipeline from Saudi Arabia’s Gulf terminals to Red Sea ports has limited capacity. UAE’s Abu Dhabi Crude Oil Pipeline can move only 1.5 million barrels daily. No infrastructure exists to replace 20 million barrels flowing through a 33-kilometer strait.

Permanent extortion infrastructure

What distinguishes this week’s legislative push from standard wartime economic coercion is its permanence. Iranian lawmakers explicitly frame the tolls not as temporary measures but as recognition of sovereignty claims over international waters. “By using the strategic position of the Strait of Hormuz, we can sanction them and not allow their ships to pass through this waterway,” one Iranian official told Iran International.

The legal basis remains contested. Iran claims territorial waters extend 12 nautical miles from its coastline, but international law guarantees transit passage through straits used for international navigation. Tehran’s toll regime challenges that framework, betting that energy-dependent economies will pay rather than force a confrontation that risks complete closure.

Lawmaker Alaeddin Boroujerdi made the calculus explicit: “Now, because war has costs, naturally we must do this and take transit fees from ships passing through the Strait of Hormuz.”

What to watch

Parliamentary finalization of the toll legislation, expected within seven days, will signal whether this becomes codified state policy or negotiating leverage. Watch for shipping insurance markets — if premiums stabilize or decline, it suggests industry acceptance of the new cost structure. If they continue climbing, carriers are pricing in complete closure risk.

The Trump administration’s General License U expires April 19. Extension would confirm acceptance of Tehran’s oil revenue despite active military conflict. Termination would tighten supply further, likely pushing Brent back toward $120.

Oil market analysts are already revising 2026 price forecasts upward. The question is no longer whether Hormuz tolls increase energy costs, but whether democracies can sustain military operations against an adversary capable of inflicting persistent economic pain on their voters. Iran is betting the answer is no — and formalizing that bet into law.