A recent investigation has revealed that billions of dollars with ties to Iran are still being processed through US banks each year, highlighting a significant loophole in Washington's sanctions against Tehran. Despite efforts to cut Iran off from the global financial system, an estimated $9 billion in Iranian funds flowed through American banks in 2024 alone, according to the US Treasury. This is achieved through indirect routes, primarily via foreign financial institutions that maintain correspondent banking relationships with US lenders.
Iran employs sophisticated methods to mask these transactions, including the use of front companies, currency exchanges, and layered networks of shell entities. These intermediaries disguise the Iranian connection before dollar transactions reach US banks for settlement. The challenge for US authorities lies in detecting these obscured transfers within the vast and essential correspondent banking system, which allows foreign banks to settle dollar transactions through US institutions without direct US operations.
The US Treasury has escalated its enforcement efforts, launching "Operation Economic Outcast" and targeting specific entities. A notable example is the United Arab Emirates branch of Egypt's state-owned Banque Misr. The Treasury identified that Banque Misr UAE processed approximately $1.8 billion in transactions between January 2024 and June 2026, potentially linked to Iranian shadow-banking networks. The US has moved to restrict Banque Misr UAE's access to US correspondent accounts, underscoring the administration's intent to hold foreign institutions accountable for facilitating Iran's access to the dollar system. Treasury officials estimate that 62% of the $9 billion in suspected illicit Iranian flows in 2024 passed through correspondent accounts in the UAE.
This situation presents a dilemma for Washington: while the dollar's dominance gives US sanctions significant power, aggressively restricting access could incentivize foreign governments and businesses to seek alternatives like the Chinese yuan or cryptocurrency. Analysts suggest that simply targeting individual entities may not dismantle the entire system, and that US institutions and their correspondent partners share responsibility for detecting suspicious activity. Treasury Secretary Scott Bessent has warned that financial institutions are "on notice" and compliance is mandatory.
