Iran has begun accepting Bitcoin and USDT as payment for tolls at the Strait of Hormuz, a move that directly challenges ongoing diplomatic efforts to ease tensions in the Persian Gulf. Secretary of State Marco Rubio warned Wednesday that the new system would kill any chance of a deal, as the tolls risk driving up global energy prices and adding fresh pressure on crypto regulators worldwide.
What Iran is doing at the strait
According to shipping and diplomatic sources, vessels transiting the Strait of Hormuz are now being asked to pay a fee in either Bitcoin or the USDT stablecoin. The Iranian Revolutionary Guard Corps is overseeing the collection, with payments routed through local exchanges. Tanker operators say the system has been in testing for weeks and went live early this month.
The Strait of Hormuz handles about a fifth of the world's oil supply. Making tankers pay a crypto toll — one that Iran can collect without relying on the traditional banking system — gives Tehran a new revenue stream that’s hard to freeze or trace.
Rubio warns: no deal if tolls stay
Secretary Rubio was blunt in a press conference Wednesday. “This tolling system is a deal-killer,” he said. Rubio argued that Iran is effectively taxing global energy supplies, and that any diplomatic agreement would be “dead on arrival” unless the practice stops. The administration has been pushing for a new framework to limit Iran’s nuclear program and regional influence, but the Hormuz tolls have become a major sticking point.
The timing isn’t great. Negotiations were tentatively scheduled for next month in Vienna. Now those talks look uncertain.
Why this pressures crypto regulation
Iran’s use of Bitcoin and USDT for a sovereign-level tolling system is something regulators hadn’t planned for. The U.S. Treasury Department is already examining whether the stablecoin issuer, Tether, has exposure to Iranian entities. European lawmakers are watching closely too — the tolls could accelerate moves to require know-your-customer checks on all stablecoin transfers, even peer-to-peer ones.
For the crypto industry, it’s a nightmare scenario: a state actor using digital currencies in a way that looks like sanctions evasion. The narrative that crypto is a tool for rogue regimes is hard to shake after this.
What comes next
There’s no sign Iran will back down. The Iranian foreign ministry said the tolls are a legitimate fee for use of its territorial waters. The next concrete step is a closed-door meeting at the International Maritime Organization scheduled for June 4, where member states are expected to formally object. Whether the U.S. follows through on Rubio’s warning — and what that means for oil prices and crypto policy — depends on what happens at that meeting.
