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Senate report says Iran used Tether's stablecoin to evade sanctions

Investigators called USDT a significant financial lifeline for Tehran and referred the matter to the Treasury and the Justice Department.

Assembled by Claude from 14 sources at 10 outlets · Wednesday, September 30, 2026, Morning edition, 10:24 AM EDT · no human byline

Disclosure. This item was assembled by an AI from the RSS excerpts of the outlets tagged inline. No human wrote or checked it before publication. Feed selection and categories are editorial choices by Teresa Lo. Nothing here is investment advice.

What happened

A US Senate report says Tether's stablecoin has become a significant financial lifeline for Iran and a tool for funding proxy organisations, including Hezbollah jpost.com. Senator Richard Blumenthal said the Permanent Subcommittee on Investigations report exposes how Tether and its flagship token have become central to Iran's shadow banking system, allowing the Iranian government to operate around the banking system finance.yahoo.com. The report says Iran uses Tether as an international payment system to get around sanctions on its banks, and as a means to fund terrorist proxies engadget.com.

The probe put a figure on the concentration. It found that 87% of Iranian terror-finance wallets primarily used USDT en.bloomingbit.io. Portions of that network maintained direct links to the Central Bank of Iran and to accounts tied to the Islamic Revolutionary Guard Corps, and the report accuses Iran of using Tether to procure Shahed drone parts iranwire.com.

Why it matters to investors

Democratic investigators referred the matter to the Treasury and the Justice Department over potential anti-money-laundering and sanctions compliance gaps, after finding that more than $34.6 million had moved through the network cryptorank.io. Blumenthal asked the two departments to examine whether Tether may have violated sanctions and banking laws en.bloomingbit.io.

The report also raises a conflict question. Blumenthal flagged Tether's ties to the administration, noting that Cantor Fitzgerald, once run by Commerce Secretary Howard Lutnick, owns about 5% of Tether cryptorank.iocryptonews.net and acts as the issuer's custodian cryptorank.ioincrypted.com. Crypto market coverage asked whether the scrutiny could affect ordinary holders of the token cryptorank.io.

What to watch

Tether says it has cooperated. The company said its actions helped freeze about $550 million in Iran-linked digital assets, describing the freezes as part of its cooperation with the Treasury cryptorank.iorudaw.net. It also said more than $130 million in USDT across four wallets was frozen in July, as the Treasury expanded the Central Bank of Iran's listed entities cryptoslate.com.

The gap between the two accounts is the open question. Reporting on the exchange noted that about $35 million slipped past the freezes cryptorank.iocryptoslate.com. Yahoo Finance framed the issue as whether Tether's USDT has become Iran's shadow bank finance.yahoo.com. Engadget reported the same claim from the Senate side engadget.com. What happens next depends on whether the Treasury and the Justice Department act on the referral en.bloomingbit.iocryptorank.io.

Tether described itself in the same statements as the issuer of the world's largest stablecoin, and said the freezes reaffirm its cooperation with US authorities rudaw.netcryptorank.io. CryptoSlate and CryptoRank both carried the arithmetic of the dispute side by side cryptoslate.comcryptorank.io.

Sources

  1. cryptorank.io: Senate Report Calls Tether a Lifeline for Iran's Sanctions Evasion - CryptoRank (2026-09-30)
  2. cryptorank.io: Tether Faces New U.S. Senate Scrutiny: Could Iran-Linked USDT Risks Affect Crypto Users? (2026-09-29)
  3. cryptonews.net: US senator urges Treasury and DOJ to investigate Tether over Iran-linked USDT - Cryptonews.net (2026-09-29)
  4. incrypted.com: US Senate Democrats linked USDT to Iran's shadow banking system - Incrypted (2026-09-29)
  5. cryptorank.io: Tether claims $550 million in Iran freezes, but $35 million slipped past Senate - CryptoRank (2026-09-30)
  6. cryptorank.io: Tether Says It Helped Freeze $550M in Iran-Linked USDT - CryptoRank (2026-09-30)
  7. en.bloomingbit.io: U.S. Senate Probe Says 87% of Iran Terror-Finance Wallets Primarily Used USDT (2026-09-30)
  8. jpost.com: US Senate report: Iran using Tether cryptocurrency as 'financial lifeline' | The Jerusalem Post (2026-09-29)
  9. cryptoslate.com: Tether claims $550 million in Iran freezes, but $35 million slipped past Senate - CryptoSlate (2026-09-29)
  10. finance.yahoo.com: Senate Report Claims Iran Is Using Tether's Stablecoin To Evade Sanctions (2026-09-29)
  11. finance.yahoo.com: Has Tether's USDT become Iran's shadow bank? - Yahoo Finance (2026-09-29)
  12. engadget.com: Senate report claims Iran is using Tether's stablecoin to evade sanctions - Engadget (2026-09-29)
  13. rudaw.net: Digital currency firm freezes $550M in Iran-linked assets, reaffirms cooperation with US (2026-09-30)
  14. iranwire.com: U.S. Senate Report Accuses Iran of Using Tether to Procure Shahed Drone Parts (2026-09-30)