Key Takeaways:
- OFAC warned crypto payments tied to Hormuz transit may trigger sanctions exposure.
- Reports say Iran operates a crypto-based toll system generating about $20 million in daily revenue.
- Foreign firms risk secondary sanctions and restricted access to U.S. financial system.
OFAC Alert Raises Crypto Sanctions Risk for Hormuz Transit
The U.S. Department of the Treasury’s Office of Foreign Assets Control (OFAC) issued a May 1 alert warning that digital asset payments tied to Strait of Hormuz passage can create sanctions exposure. The warning makes clear that crypto does not reduce legal risk for maritime firms, financial institutions, insurers, or counterparties. OFAC said Iran-linked demands for safe transit can appear in several forms. The warning states:
“These demands may include several payment options, including fiat currency, digital assets, offsets, informal swaps, or other in-kind payments, such as nominally charitable donations made to the Iranian Red Crescent Society, Bonyad Mostazafan, or Iranian embassy accounts.”
The warning comes alongside reports that Iran is actively accepting cryptocurrency under what is being called a formal “Tehran Toll Booth” regime for Strait of Hormuz transit. The system, codified on March 31, 2026, remains in active use. Bitcoin is the primary payment method, with reported USDT usage, though Tether froze more than $344 million in Iranian-linked assets in late April. Oil tanker fees run $0.50 to $1.00 per barrel, or roughly $2 million per very large crude carrier (VLCC).
OFAC also said U.S. persons are generally barred from transactions involving the Government of Iran unless exempt or authorized. That restriction also covers dealings with Iran’s Islamic Revolutionary Guard Corps (IRGC). OFAC separately flagged crypto platforms tied to Iran. “U.S. persons are also generally prohibited from engaging with Iranian digital asset exchanges, which are considered blocked Iranian financial institutions under U.S. sanctions,” the alert states, showing that digital asset payments are treated as sanctions exposure, not as a workaround.
Maritime Firms Face Enforcement Pressure Over Digital Asset Payments
TRM Labs estimates daily IRGC revenue at about $20 million. Outside the United States, sanctions exposure still applies. OFAC said foreign actors may face penalties for transactions involving the Government of Iran or the IRGC. Secondary sanctions could restrict access to the U.S. financial system. OFAC added:
“Non-U.S. persons engaging with blocked Iranian digital asset exchanges may also risk sanctions for operating in or supporting the sanctioned Iranian financial sector.”
Even indirect involvement can create liability if a transaction passes through U.S.-linked insurers, banks, or financial intermediaries. For maritime operators, that risk shifts focus to payment transparency and counterparty checks. OFAC urged firms to review vessels, identify who arranged transit, and determine whether any Iran-linked fees were paid or promised. Under the IRGC system, ships must submit ownership and cargo details through intermediaries before approval. Payments are then sent to designated wallets via a “conversion window” on Qeshm Island, followed by a VHF-issued passcode and naval escort. This process makes verifying wallet addresses and counterparties critical for compliance.
Separate late-April developments have made the risks around these payment systems more visible. On April 21, reports said the IRGC fired on a vessel after it paid a fraudulent crypto wallet instead of an authorized address. On April 30, Treasury Secretary Scott Bessent said Operation Economic Fury had seized $500 million in Iranian crypto assets. These developments show that digital assets are central to both payment activity and enforcement action.
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