FinCEN moves to cut MEXC off from US finance over alleged $16B in illicit flows
In brief
- FinCEN ordered US financial institutions to stop processing transfers involving crypto exchange MEXC Global.
- FinCEN alleged MEXC facilitated at least $16 billion in illicit-linked transactions.
- Roughly $1.5 billion was allegedly tied to Russian sanctions evasion, per Treasury's press release.
- The order takes effect 30 days after publication in the Federal Register.
- MEXC held about $4.48 billion in total assets as of Friday, per DefiLlama data.
What FinCEN alleged
FinCEN alleged that MEXC handled transactions involving sanctioned groups in Iran, Russia and North Korea between May 2021 and May 2026. That's a five-year window. Within the $16 billion total, the bureau alleged that around $1.5 billion was linked to Russian sanctions evasion (a figure Cointelegraph took from Treasury's official press release).
These are the regulator's allegations. They aren't findings of wrongdoing, and the exchange hasn't put out a public response in the reporting so far.
How the order works
The order isn't in force yet. Once it is, it effectively bans US financial institutions from processing money transfers involving MEXC, but that only happens 30 days after publication in the Federal Register, so there's a gap between Friday's announcement and the actual cutoff.
The action sits inside Operation Economic Outcast, a Treasury campaign launched in August to cut off financial entities that help Iran evade sanctions. Treasury Secretary Scott Bessent framed it as a simple choice for institutions: support the Iranian regime, or keep access to the US financial system. He also pointed straight at crypto in Treasury's statement, as reported by Cointelegraph.
“Treasury will continue to sever the Iranian regime’s economic lifelines and thwart its desperate attempts to circumvent U.S. sanctions using digital assets.”
That last part matters for the wider crypto market. It's not a generic sanctions line; Treasury is naming digital assets as a channel it intends to close off.
MEXC's balance sheet
According to DefiLlama, MEXC held about $4.48 billion in total assets as of Friday. That's the scale of the exchange US institutions will be barred from transacting with once the order takes effect, and it puts the alleged $16 billion in illicit-linked flows (spread over five years) into some context.
MEXC hadn't responded to Cointelegraph's request for comment by publication time.
Frequently asked questions
What did FinCEN order regarding MEXC?
FinCEN, a US Treasury bureau, ordered US financial institutions on Friday to stop processing transfers involving MEXC Global. The order effectively bans those institutions from processing money transfers involving the exchange.
When does the FinCEN order against MEXC take effect?
The order takes effect 30 days after it is published in the Federal Register. It was not in force at the time of Friday's announcement.
What is MEXC accused of?
FinCEN alleged MEXC facilitated at least $16 billion in transactions linked to sanctions evasion, cybercrime and other illicit activity, including sanctioned groups in Iran, Russia and North Korea between May 2021 and May 2026. Around $1.5 billion was allegedly tied to Russian sanctions evasion.
What is Operation Economic Outcast?
Operation Economic Outcast is a US Treasury campaign launched in August that aims to cut off financial entities that help Iran evade sanctions. The MEXC action was carried out as part of it.
