Iran’s USDT Trade Route Has U.S. Chokepoints

Key Takeaways

• Iranian firms reportedly settle trade with crypto.
• USDT avoids banks, not sanctions exposure.
• Undeclared earnings reportedly exceed $100 billion.
• OFAC has blocked Iranian crypto exchanges.
• Counterparties remain the payment chain’s weakness.

Iran’s central bank has reportedly eased enforcement of some foreign-currency rules as war and sanctions restrict access to conventional payment channels. Some businesses are turning to USDT and Bitcoin through domestic exchanges to settle foreign trade, according to a Financial Times investigation.

No formal policy approving cryptocurrency for international trade has been announced. The reported change suggests that authorities are tolerating some crypto-based settlement as exporters struggle to repatriate earnings and importers look for ways to pay overseas suppliers.

The $100 billion estimate explains the pressure

Iran’s judiciary estimates that businesses hold more than $100 billion in undeclared earnings at home and overseas. Strict repatriation requirements have discouraged some exporters from returning revenue through official channels, leaving money abroad while importers struggle to obtain foreign currency.

The $100 billion estimate does not represent Iranian cryptocurrency holdings. It describes a much larger pool of earnings outside the declared system. USDT and Bitcoin reportedly offer one way to connect part of that money with businesses that need to finance imports.

How an export payment can finance an import

A simplified transaction shows how export earnings can be redirected toward an importer, and where authorities or service providers can intervene.

A cross-border USDT settlement

StagePayment and exposureExportAn Iranian exporter receives revenue abroad. The buyer, bank or payment intermediary may retain records of the transaction.ConversionPart of the revenue is converted into USDT. An exchange or broker may collect identity and transaction information.TransferThe USDT reaches an importer or settlement intermediary. Its movement remains visible on the blockchain.SupplierThe overseas supplier receives or converts the payment. Exchanges, banks and other service providers may screen the funds.

An Iranian bank may be removed from the cross-border leg, but the exchange, blockchain record and final conversion remain visible.

USDT reduces currency risk but adds a gatekeeper

Because USDT is designed to track the dollar, exporters and suppliers can price an invoice without accepting Bitcoin’s short-term volatility. USDT is widely traded across exchanges and issued on multiple blockchain networks, making it easier to transfer and convert than many other cryptocurrencies.

Bitcoin has no central issuer capable of freezing the asset itself, although custodial platforms can still restrict access to it. Its sensitivity to geopolitical developments has already appeared in the market, including when Bitcoin reacted to claims of a U.S.-Iran agreement. That volatility makes it less practical than USDT for invoices expected to retain a predictable value between agreement and settlement.

USDT has a different weakness. Tether introduced a policy in 2023 to freeze wallets associated with persons and entities on the OFAC sanctions list and has continued cooperating with law enforcement. In April 2026, the company said it helped freeze more than $344 million in USDT across two addresses. Tether can therefore freeze USDT held at identified addresses.

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U.S. enforcement targets the new gateways

The same intermediaries that make crypto useful for trade have become targets for U.S. enforcement. On June 2, the Treasury Department’s Office of Foreign Assets Control designated Nobitex, Wallex, Bitpin and Ramzinex, four Iranian digital-asset exchanges accused of supporting Iran’s financial sector or facilitating sanctioned activity.

The FT’s reported commercial activity should not be treated as evidence that every Iranian crypto payment involves a sanctioned party or prohibited trade. The legal position depends on the businesses, goods, jurisdictions and payment services involved.

Treasury said Nobitex processed more than half of Iranian digital-asset inflows in 2025. The department also said its wider enforcement campaign had led to nearly $500 million in regime-linked cryptocurrency being frozen.

Treasury described that money as frozen, meaning its movement was blocked. This differs from seized assets that have passed into government control.

Unrelated U.S. cases show what can happen after authorities obtain that control. In July, government-linked wallets moved approximately $297 million in seized Bitcoin and Ether to Coinbase Prime. The assets were not connected to Iran, but their movement showed how confiscated crypto can be consolidated with a government custodian while legal proceedings or decisions about its disposal continue.

For Iran-related transactions, enforcement can begin before an asset is seized. OFAC considers Iranian digital-asset exchanges blocked financial institutions, even when an individual exchange has not been separately named on its sanctions list. Property involving those platforms must be blocked when it enters the possession or control of a U.S. person.

The risk is not confined to American businesses. OFAC says non-U.S. institutions and other foreign parties may also face sanctions for significant transactions involving designated Iranian exchanges.

A blockchain transfer can consequently succeed while the commercial payment still fails. An overseas supplier may receive USDT but find that an exchange will not convert it, Tether has frozen the wallet or a bank will not accept the resulting funds. For the businesses involved, the decisive question is not only whether the tokens can move, but whether the recipient can use them afterward.

What would show crypto trade is becoming structural

The first development to watch is whether Iran’s central bank replaces informal tolerance with written rules. An official framework could clarify which businesses may use crypto, how transactions should be reported and whether digital assets can formally satisfy export-revenue requirements.

Activity and enforcement data would provide further evidence:

• Stablecoin flows through Iranian exchanges: sustained growth would suggest that usage extends beyond occasional settlement.
• USDT premiums in Iranian markets: a persistent premium would indicate strong local demand for digital dollars.
• New OFAC exchange designations: further action would show where U.S. authorities see the largest exposure.
• Tether freezes involving Iranian entities: these would measure how effectively enforcement reaches the tokens themselves.
• Acceptance by overseas suppliers: broader use would show whether businesses can complete the entire transaction rather than only transfer the payment.

The more this trade depends on USDT and identifiable exchanges, the faster payments may settle, and the more effectively U.S. enforcement can concentrate on a limited number of gateways.

This article is for informational purposes only and does not constitute legal or financial advice.

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