Key Insights:
- Tether reported nearly $550 million in USDT freezes linked to Iran-related wallets during 2026 enforcement actions.
- Tether said its cooperation supported more than 2,900 global investigations, including over 1,600 involving U.S. agencies.
- U.S. authorities identified digital assets as a sector targeted in expanded efforts against Iran sanctions-evasion networks.
As Tether maintains its ongoing collaboration with U.S. and international regulators, the firm has blocked close to $550 million worth of USDT connected to Iran-sanctioned networks throughout 2026. These restrictions came in response to law enforcement directives and sanctions-related measures.
The targeted wallets were flagged by authorities for their association with Iran’s financial systems. Alongside these compliance steps, the issuer also revealed a partnership with Shiga to roll out self-custodial wallet services throughout Africa and the Gulf Cooperation Council area.
USDT Addresses Linked to Iran Come Under Restrictions
Following intelligence provided by the Office of Foreign Assets Control and American law enforcement, Tether restricted over $344 million in USDT across a pair of addresses in April 2026. Shortly after, OFAC formally designated these crypto addresses as digital currency identifiers tied to the Central Bank of Iran.
Later in July 2026, American regulators broadened their sanctions designations to target TRON addresses, prompting Tether to freeze an additional $130 million-plus in USDT across four separate wallets. Combined, these regulatory moves pushed the total volume of Iran-associated USDT frozen in 2026 to roughly $550 million.
According to Tether, its collaborative efforts with law enforcement extend to upwards of 2,900 investigations worldwide, featuring more than 1,600 cases connected to U.S. agencies. The company specifically highlighted coordination with entities like the Federal Bureau of Investigation, the Department of Justice, the U.S. Secret Service, OFAC, and Homeland Security Investigations.
Tether Compliance Partnerships Grow
Beyond its recent actions, Tether has partnered with international bodies on cases involving financial fraud, terrorism financing, and sanctions violations. Notably, the firm has collaborated with Israel’s National Bureau for Counter Terror Financing regarding cryptocurrency addresses linked to illegal operations.
Back in 2023, joint efforts with Israeli officials led Tether to lock 32 addresses holding in excess of $873,000 in USDT. The business subsequently carried out further freezes exceeding 22 million USDT across more than 640 wallets flagged by the same Israeli agency.
Overall, Tether’s broader cooperation initiatives have assisted in securing more than $4.9 billion worth of assets across a variety of probes. Out of that cumulative figure, the enterprise noted that over $2.4 billion stems from investigations initiated by U.S. authorities.
Notable past actions include aiding a $225.3 million cryptocurrency seizure probe, executing a $61 million fraud-related restriction, and carrying out a $52 million freeze targeting suspected scam rings.
Crypto Investigations Rely on Blockchain Transaction Records
To execute these wallet restrictions, Tether synchronizes its operations with the OFAC Specially Designated Nationals List, enabling the company to block accounts flagged by official U.S. sanctions criteria.
CEO Paolo Ardoino stated,
“Public blockchains provide authorities with a level of visibility into the movement of funds that simply does not exist with cash, and Tether can act when credible information is provided by law enforcement.”
These compliance measures arrive amid heightened scrutiny from governments regarding the use of digital currencies in financial crimes and sanctions evasion. Regulators continue exploring ways to leverage blockchain transparency for enhanced oversight.
Africa Wallet Expansion Adds New Digital Asset Access
In a separate development, Tether and Shiga are teaming up to introduce self-custodial wallets for individual and institutional clients across the Gulf Cooperation Council region and Africa. The upcoming offerings will be powered by Tether’s open-source Wallet Development Kit (WDK).
Shiga intends to roll out ENTA tailored for retail users, high-net-worth clients, and enterprises, while its Pulse platform will cater to fintech firms, banks, and institutional customers. ENTA participants will have the ability to fund their wallets using Bitcoin, local fiat currency, or U.S. dollars, allowing them to store and transfer Bitcoin, Tether Gold, and USDT.
Meanwhile, Pulse will give institutional clients the option to utilize wallet infrastructure administered by Shiga or integrate the software directly into their proprietary systems. This framework grants businesses direct ownership over their private keys, data management, and transaction approval procedures.
Tether previously backed Shiga Digital with an investment in 2025 as the firm expanded its suite of over-the-counter transactions, treasury management, foreign exchange, and virtual account offerings. Shiga confirmed that its Nigerian Digital Asset Intermediary license remains under regulatory review.
Frequently Asked Questions
How much Iran-linked USDT did Tether freeze in 2026?
Tether froze nearly $550 million in USDT linked to Iran-related sanctions networks during enforcement actions throughout 2026.
Which law enforcement agencies does Tether work with?
Tether cooperates with numerous global and U.S. agencies, including the Department of Justice, the FBI, the U.S. Secret Service, Homeland Security Investigations, OFAC, and Israel’s National Bureau for Counter Terror Financing.
What is the Wallet Development Kit (WDK)?
The WDK is Tether’s open-source Wallet Development Kit that powers new self-custodial wallet products, such as those being developed in partnership with Shiga for users across Africa and the Gulf Cooperation Council region.
How does Tether determine which wallets to freeze?
Tether aligns its freezing processes with the OFAC Specially Designated Nationals List and acts when credible information or requests are provided by law enforcement and regulatory authorities.