FinCEN orders U.S. financial firms to cut off MEXC

FinCEN has ordered U.S. financial institutions to stop transferring funds involving MEXC Global, citing alleged illicit flows tied to Russia, Iran, North Korea and cybercrime. The order, announced November 6 by the Treasury bureau, targets the exchange’s access to the U.S. financial system through banks and other covered financial firms.

The agency’s announcement says MEXC facilitated at least $16 billion in illicit transactions and transacted directly with sanctioned actors. That is Treasury’s allegation, not a finding by a court. The immediate practical change is aimed at financial intermediaries: once effective, they will be barred from processing funds transfers involving MEXC.

When does the transfer ban take effect?

It takes effect 30 days after the order is published in the Federal Register. The order was still awaiting publication when FinCEN released it, so the countdown had not yet begun. Until the effective date, the announcement itself does not mean that U.S. financial institutions are already subject to the new prohibition.

FinCEN issued the order under Section 9714 of the Combating Russian Money Laundering Act. The legal basis matters: the agency formally determined that MEXC is a foreign financial institution of primary money-laundering concern in connection with Russian illicit finance. Treasury also cites alleged transactions benefiting Iran and North Korea, but those allegations are not the formal basis stated in the order.

What does FinCEN say the $16 billion covers?

The figure in the order is more specific: FinCEN says MEXC facilitated $16.7 billion in funds connected to Russian illicit finance and other illicit activity between May 2021 and May 2026. The agency says the activity included sanctions evasion and cybercrime, and identified direct transactions with sanctioned actors. Separately, it says MEXC facilitated billions of dollars in transactions benefiting Iran and its proxies, North Korean financial facilitators and cybercrime actors.

FinCEN’s order cites nearly $1.5 billion in direct and indirect exposure to transactions linked to Russian sanctions evasion over that five-year period, including $232 million in direct transactions with entities sanctioned by the U.S., European Union or United Kingdom. The agency also says MEXC transacted with Russian-linked exchanges Garantex and Grinex after their public designations, including as recently as June 2026. These figures are components of the agency’s case, not a separate measure of customer losses.

Does the order close MEXC to its users?

The order restricts U.S. financial institutions; it does not itself announce that MEXC will stop operating globally or that customers’ accounts will close. CoinDesk reported that MEXC said it was operating normally, reviewing the order and commissioning an independent review of its anti-money-laundering and sanctions controls. Whether customers encounter payment or funding problems will depend in part on how financial intermediaries apply the restriction once it takes effect.

According to Treasury’s order, MEXC processed more than $1 billion in daily transactions and held about $5 billion in reserve assets as of June 2026. Those scale figures help explain why the action could matter to users and counterparties, but the order does not detail how individual customer balances or withdrawals will be handled. The next date to watch is the order’s publication in the Federal Register; the 30-day period will run from there.

Sources

• announcement — fincen.gov