U.S. Treasury Blocks MEXC From Banking System Over $16B Illicit Flows

On Friday, the Financial Crimes Enforcement Network (FinCEN), part of the U.S. Treasury, issued a final order to disconnect the offshore exchange MEXC Global from the American banking system. The department stated this action is due to alleged connections to sanctions evasion involving Iran, North Korea, and Russia.

The FinCEN order, which was published as a PDF while awaiting placement in the Federal Register, identifies MEXC as a "primary money laundering concern in connection with Russian illicit finance" entity under section 9714(a) of the Combating Russian Money Laundering Act. Thirty days after the notice appears in the Register, U.S. financial institutions covered by the order will be prohibited from conducting any fund transfers, including those involving convertible virtual currency, to or from MEXC.

Reuters reported the same cutoff on Friday afternoon. The Treasury described the move as part of Operation Economic Outcast. This is not an OFAC sanctions designation; the order clarifies that it does not alter duties under the Bank Secrecy Act or OFAC rules, and it functions as a FinCEN funds-transmittal ban rather than a proposed rulemaking under Section 311.

The Treasury alleges that MEXC facilitated at least $16 billion in illicit flows between May 2021 and May 2026. This includes nearly $1.5 billion associated with Russian sanctions evasion and approximately $22 million linked to Iran’s Central Bank and the Qods Force of the Islamic Revolutionary Guard Corps. According to the release, the platform continued to process trades with sanctioned entity Garantex and its successor Grinex as recently as June 2026, more than four years after OFAC designated Garantex.

Details of the order and its timeline

Signed by FinCEN Deputy Director Jimmy L. Kirby, the order applies to MEXC Global and its named affiliates operating outside the United States. These include Seychelles-incorporated MEXC Global Ltd and MX Global Ltd, Estonia’s MEXC Estonia OÜ, Switzerland’s GIDA Technology AG, and the U.K.’s MXC Global Ltd, along with their successors. Covered institutions face civil or criminal penalties for willful violations.

The 30-day countdown has not yet begun until the Federal Register publishes the notice. As of Friday evening Eastern Time, the Register’s public index still showed no document for MEXC, consistent with the order’s cover note stating that publication is pending.

Background on MEXC

Established in 2018 and formerly known as MXC, MEXC is ranked among the world’s 20 largest centralized cryptocurrency exchanges by trading volume. The Treasury reports daily turnover exceeding $1 billion and reserves nearing $5 billion as of mid-2026, with access claimed in more than 170 countries. Although the exchange already lists the United States as a prohibited jurisdiction in its user terms, Friday’s action primarily affects remaining dollar rails, banking partners, and counterparties that still interact with U.S. institutions.

Regulators in other jurisdictions have been monitoring the exchange for years. In March 2024, the U.K. Financial Conduct Authority added MEXC Global Ltd to its warning list as an unauthorized entity. That same month, Hong Kong’s Securities and Futures Commission warned that the platform was marketing to local investors without a license. Additionally, in May 2026, Seychelles’ Financial Services Authority took action against MX Global Ltd for unlicensed virtual-asset operations, a detail footnoted in the FinCEN order.

These compliance gaps are significant because the thesis regarding illicit flows is specific rather than based on guilt by association. Beyond Russia, FinCEN cites approximately $1 billion in direct traffic with more than 40 Iranian cryptocurrency exchanges, nearly $26 million with the OFAC-sanctioned A7 sanctions-evasion network, and almost $200 million tied to the A7A5 stablecoin. Allegations also include facilitation by DPRK actors and cybercrime flows. MEXC has not issued a public response to the Friday order; its main X account continued posting marketing content through the afternoon.

Implications for bitcoin markets

Practically, once the order takes effect, U.S. banks, money transmitters, and other covered firms will be unable to move dollars or cryptocurrency to MEXC wallets or accounts. While offshore users may continue peer-to-peer trading, dollar on-ramps and any banks still clearing for MEXC will face legal risk. This template mirrors earlier 9714 cutoffs of venues such as Bitzlato. It arrives during a busy sanctions week that has already seen cryptocurrency designations for North Korea, action against an Iranian exchange, and Russia’s efforts to place bitcoin trading on the Moscow Exchange.

The open question remains whether MEXC will contest the findings, seek 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 underlying the cutoff.