The U.S. Treasury Department announced it has sanctioned several cryptocurrency wallets associated with Iran, resulting in the freeze of $344 million in digital assets, Treasury Secretary Scott Bessent said on X.
In a statement posted to the social platform, Bessent said, "Treasury’s Office of Foreign Assets Control is sanctioning multiple wallets tied to Iran - resulting in the freeze of $344 million in cryptocurrency." He added that authorities would pursue funds Iran is attempting to move abroad, saying, "We will follow the money that Tehran is desperately attempting to move outside of the country and target all financial lifelines tied to the regime."
The action is occurring against a backdrop of stalled diplomatic efforts to end the war. The administration has stepped up economic pressure on Iran during a period described in public statements as an uneasy ceasefire, although it is not clear whether seizing the assets will change Tehran’s posture in negotiations or on the battlefield.
Cryptocurrency tracing firm Chainalysis provided context on the scale of digital-asset holdings in Iran, reporting that crypto holdings in the country reached $7.8 billion in 2025 and that those holdings grew for most of the year at a faster pace than in 2024.
On Thursday, Tether, which operates a major stablecoin used in global crypto transactions, said it had "supported the US government in freezing" $344 million in cryptocurrency tied to two addresses. According to Tether’s statement, that action followed information shared "by several U.S. authorities about activity tied to unlawful conduct."
The coordinated action between government authorities and a private-sector digital currency firm highlights the intersection of sanctions enforcement and crypto infrastructure. Officials framed the move as part of a broader effort to limit financial lifelines they associate with the Iranian regime, while publicly acknowledging uncertainty about the broader diplomatic or strategic impact of the seizure.
Summary
The Treasury has sanctioned multiple Iran-linked crypto wallets and frozen $344 million in assets, with public statements from the Treasury and cooperation from Tether. Chainalysis reports Iran’s crypto holdings reached $7.8 billion in 2025, and the U.S. says it will pursue funds it views as being moved out of the country.
- Key points
- The Treasury sanctioned several wallets tied to Iran, freezing $344 million in cryptocurrency.
- Tether said it aided the U.S. government in freezing the funds after receiving information from U.S. authorities about alleged unlawful activity.
- Chainalysis reported Iran’s crypto holdings reached $7.8 billion in 2025, with growth faster than in 2024 for most of the year - affecting the crypto and sanctions enforcement landscape.
- Risks and uncertainties
- It is unclear whether the frozen assets will influence Tehran’s stance in ongoing negotiations or the broader conflict - a diplomatic and geopolitical uncertainty.
- The wider economic and market consequences of intensified sanctions on Iran remain uncertain as diplomatic efforts remain fragile.