FinCEN Orders U.S. Institutions to Halt MEXC Transfers

By Nathan Brooks

At least $16 billion in transactions that Treasury alleges MEXC Global facilitated in connection with sanctions evasion and cybercrime sits behind a Financial Crimes Enforcement Network (FinCEN) directive for U.S. financial institutions to "stop transferring funds to MEXC Global." MEXC Global is the cryptocurrency exchange targeted by the action.

FinCEN issued the directive under Section 9714(a) as part of Treasury's Operation Economic Outcast. The prohibition covers fund transfers between U.S. financial institutions and MEXC Global and takes effect 30 days after publication in the Federal Register.

For institutions, the restriction changes which transactions they may execute rather than which assets they may custody. Once effective, they cannot send funds to MEXC through covered transfer channels. The directive does not state whether they must close existing accounts, freeze balances, or terminate every service relationship with the exchange.

What did Treasury allege?

Treasury's allegation spans May 2021 through May 2026, a five-year period. It covers sanctions evasion involving Iran, North Korea and Russia, as well as cybercrime. Treasury presented the $16 billion figure as an allegation; the material identifies no judicial finding on the amount.

• About $22 million: Treasury said the activity was connected to Iran's central bank and the Islamic Revolutionary Guard Corps' Quds Force.
• Nearly $1.5 billion: Treasury said the activity was linked to Russian sanctions evasion.
• At least $16 billion: This represents the broader total for alleged transactions tied to sanctions evasion and cybercrime.

Treasury presented the Iran- and Russia-linked figures as examples within the broader $16 billion, not as additional amounts to add to it. The cited figures do not provide separate totals for North Korea or cybercrime, so they do not constitute a complete accounting of the alleged activity.

On a simple annual basis, the broader allegation equals at least $3.2 billion a year over five years. Treasury did not provide a year-by-year distribution, making the calculation a measure of scale rather than a claimed annual flow.

Another distinction matters: the transaction allegation covers MEXC's conduct over five years, while the order applies specifically to transfers between U.S. financial institutions and MEXC. The material does not state that every alleged transaction involved a U.S. financial institution.

What does this change for MEXC users?

For users, the practical question is whether they can continue sending funds through a U.S. financial institution to MEXC. Once the directive takes effect, the answer described by FinCEN is no for covered transfers. The order does not announce account closures, a retail-trading ban, withdrawal restrictions, asset delistings, or a penalty schedule.

For MEXC, the direct operational consequence is a blocked route for sending money from covered U.S. institutions. Banks and other covered financial institutions must prevent those transfers after the effective date, placing compliance controls on the institutions while cutting MEXC off from that channel of the U.S. financial system.

The distinction matters because a transfer prohibition is not, by itself, a description of every commercial relationship between MEXC and its users. Neither Treasury's account nor the directive as described addresses MEXC's response, customer balances, non-U.S. banking channels, or corporate restructuring.

Placing the directive under Section 9714(a) and within Operation Economic Outcast ties the transfer restriction to Treasury's named enforcement operation. The material does not specify monitoring methods or penalties for a covered institution that transfers funds after the effective date.

The material does not give the Federal Register publication date, so it does not establish a fixed calendar cutoff. The next concrete checkpoint is the 30-day period after publication, when the prohibition on transfers between U.S. financial institutions and MEXC takes effect.