Key Insights:
- Tether says that, in 2026, actions involving USD₮ have frozen approximately $550 million across wallets linked to Iran’s Central Bank and sanctions networks.
- OFAC and U.S. law enforcement provided information for the freezes as Washington broadens its campaign against Iran’s sanctions-evasion networks.
- The company says it works with more than 340 law enforcement agencies across 67 countries and has supported over 2,900 global investigations.
Tether said on September 28, 2026, that it had helped freeze around $550 million in assets. Users kept those funds in wallets that U.S. authorities linked to Iran’s Central Bank and sanctions-related networks.
It follows Washington’s push to crack down on sanctions violations and advance its digital-asset drive.
Tether and the Iran Sanctions Campaign
The latest figure comes from Tether’s own September 28 statement. The company said it has worked with U.S. and international authorities as the Treasury Department expands its campaign against Iranian financial networks.
Treasury Secretary Scott Bessent launched Operation Economic Outcast on August 24, describing it as a campaign targeting Iran’s financial connections around the world.
Treasury identified digital assets as one of five sectors facing expanded sanctions pressure, alongside technology, gold, aviation, and shipping.
April was the busiest month for Tether in terms of disclosures. It assisted the U.S. government in freezing over USD₮344 million in U.S. funds at two addresses, based on information provided by the U.S. government’s Office of Foreign Assets Control and U.S. law enforcement officials, the company said.
The next day, OFAC included those same addresses in its list of digital currency identifiers of Iran’s Central Bank.
In July, Tether said more than $130 million in USD₮ across four wallets was frozen after the Treasury expanded the Central Bank of Iran designation to four additional TRON addresses. Tether puts the combined 2026 Iran-linked total at approximately $550 million.
The distinction is worth keeping clear. Authorities identified the addresses, while Tether implemented an issuer-level freeze on USD₮ held in those wallets.
Tether’s Freeze Power Becomes Part of Enforcement
The latest figures show one of the defining features of centralized stablecoins. Bitcoin transactions cannot be stopped by an issuer because there is no issuer controlling individual BTC balances. USD₮ operates differently.
Tether can restrict specific wallet addresses when it receives credible information connecting funds to sanctioned or illicit activity.
Paolo Ardoino, Tether’s CEO, said the company’s approach is based on the transparency of public blockchains.
“Public blockchains provide authorities with a level of visibility into the movement of funds that simply does not exist with cash,” Ardoino said. He added that Tether can act when credible information is provided by law enforcement.
Tether said its wallet-freezing policy is also aligned with the OFAC Specially Designated Nationals List, including controls involving secondary-market wallets listed on the sanctions list.
That gives regulators another enforcement point between a transaction appearing on a blockchain and funds reaching an off-chain financial institution.
The Wider Enforcement Network
The Iran-related freezes sit within a much larger law-enforcement relationship. Tether claims to have over 340 law enforcement partners in 67 countries. According to its September statement, it has aided in conducting over 2,900 investigations around the world and over 1,600 with U.S. law enforcement.
In those efforts, the firm also reports that it has “frozen” over $4.9 billion in assets, with over $2.4 billion linked to U.S. officials. U.S. law enforcement has separately credited Tether with helping in a number of cryptocurrency enforcement matters.
In September, the Justice Department said Tether provided proactive assistance during an operation that restrained approximately $52 million linked to an illicit scam marketplace.
In February, federal agents seized more than $61 million in Tether, with the DOJ and Homeland Security Investigations acknowledging Tether’s assistance.
The DOJ also thanked Tether for its assistance in a 2025 case involving more than $225.3 million in cryptocurrency tied to alleged investment fraud and money laundering.
Iran’s Crypto Channels Face Greater Scrutiny
The timing is significant for Iran’s digital-asset market. The Coin Republic reported on September 18 that the U.S. Treasury had sanctioned Iranian digital-asset exchange BitBank, alleging that it was involved in Iran-linked cryptocurrency transfers.
Treasury said the action formed part of Operation Economic Outcast and extended sanctions pressure into Iran’s digital-asset sector.
Earlier, The Coin Republic reported that Binance CEO Richard Teng had sought to distinguish Binance from a U.S. Department of Justice civil forfeiture case involving more than $61 million in cryptocurrency allegedly tied to Iranian oil proceeds.
Prosecutors alleged that two Chinese companies used Binance accounts as part of the network, while Teng said the filing alleged no wrongdoing by Binance and that the exchange continued cooperating with authorities.
Another September report detailed how Iranian authorities had relaxed some foreign-exchange controls and allowed greater flexibility in handling export proceeds, with Bitcoin and USDT becoming more relevant for cross-border settlement as access to conventional banking remained restricted.
That creates a complicated position for USD₮. Its dollar-linked design can make it useful for moving value across borders, but its centralized issuer also means identified wallets can be frozen.
