Treasury Order Severs MEXC From U.S. Banking System Over Alleged $16B Illicit Flows

A final order issued Friday by the U.S. Treasury’s Financial Crimes Enforcement Network will separate offshore exchange MEXC Global from the American banking system, with the department attributing the move to alleged sanctions-evasion ties to Iran, North Korea and Russia.

Published as a PDF ahead of Federal Register placement, the FinCEN directive labels MEXC a “primary money laundering concern in connection with Russian illicit finance” under section 9714(a) of the Combating Russian Money Laundering Act. Once the notice appears in the Register, covered U.S. financial institutions will have 30 days before they must stop all funds transfers — convertible virtual currency included — to or from MEXC.

The same cut-off was reported on Friday afternoon by Reuters. Treasury presented the action as part of Operation Economic Outcast. The move is not an OFAC sanctions designation: the order leaves Bank Secrecy Act duties and OFAC rules unchanged and acts as a FinCEN funds-transmittal ban rather than a Section 311 proposed rulemaking.

According to Treasury, MEXC facilitated no less than $16 billion in illicit flows from May 2021 through May 2026, with nearly $1.5 billion of that tied to Russian sanctions evasion and around $22 million connected to Iran’s Central Bank and the Qods Force of the Islamic Revolutionary Guard Corps. The release says that as recently as June 2026 — more than four years after OFAC designated Garantex — the platform was still carrying out trades with sanctioned Garantex and its successor Grinex.

What the order does — and when

FinCEN Deputy Director Jimmy L. Kirby signed the order, which applies to MEXC Global and identified non-U.S. affiliates: Seychelles-incorporated MEXC Global Ltd / MX Global Ltd, Estonia’s MEXC Estonia OÜ, Switzerland’s GIDA Technology AG and the U.K.’s MXC Global Ltd, along with successors. Willful violations by covered institutions can trigger civil or criminal penalties.

The 30-day clock does not start until the Federal Register publishes the notice. As of Friday evening Eastern time, the Register’s public index had no MEXC document, which matches the order’s cover note that publication is still pending.

Background on MEXC

MEXC, founded in 2018 and once branded MXC, is among the 20 largest centralized crypto venues in the world by trading volume. Treasury estimates daily turnover at more than $1 billion and reserves close to $5 billion as of mid-2026, with access claimed in more than 170 countries. Because the exchange’s user terms already designate the United States as a prohibited jurisdiction, Friday’s order mostly affects remaining dollar rails, banking partners and counterparties that still have contact with U.S. institutions.

Other regulators have been circling for years. In March 2024, the U.K.’s Financial Conduct Authority added MEXC Global Ltd to its warning list, calling it unauthorized. That same month, Hong Kong’s Securities and Futures Commission warned that the exchange was offering its services to local investors without a licence. Seychelles’ Financial Services Authority said in May 2026 that it had taken action against MX Global Ltd for unlicensed virtual-asset operations, a matter footnoted in FinCEN’s order.

These compliance gaps carry weight because the illicit-flow case rests on specific activity rather than guilt by association. Outside Russia, FinCEN points to about $1 billion in direct traffic with more than 40 Iranian crypto exchangers, nearly $26 million with the OFAC-sanctioned A7 sanctions-evasion network, and roughly $200 million linked to the A7A5 stablecoin. The order also alleges activity involving DPRK facilitators and cybercrime flows. MEXC has not publicly responded to Friday’s order; its main X account kept posting marketing material through the afternoon.

Why it matters for bitcoin markets

Once the order takes effect, U.S. banks, money transmitters and other covered companies will be unable to send dollars or cryptocurrency to MEXC wallets or accounts. Offshore users can continue trading peer-to-peer, but any dollar on-ramp or bank that still clears for MEXC becomes a legal risk. The approach follows earlier 9714 cut-offs of venues such as Bitzlato and arrives in a busy sanctions week that has already included North Korea crypto designations, an Iranian exchange action and Russia’s push to put bitcoin trading on the Moscow Exchange.

The open question is whether MEXC will contest the finding, apply for an exemption, or quietly reroute liquidity. For now, the paper trail is clear: a final FinCEN order under 9714(a), a 30-day fuse triggered by Federal Register publication, and Treasury’s claim of at least $16 billion in illicit volume behind the cut-off.