FinCEN Cuts MEXC Off From U.S. Over $16.7B Illicit Flows

• Some users report extra compliance checks when moving funds from MEXC to OKX, Binance and Gate.
• FinCEN has named MEXC a primary money laundering concern linked to Russian illicit finance.
• The order applies to U.S. financial institutions and takes effect only after Federal Register publication.
• MEXC says it is operating normally and has launched an independent compliance review.

People moving crypto out of MEXC Global are hitting extra compliance checks at OKX, Binance, Gate and Bitget Wallet. The checks started after the U.S. Treasury’s Financial Crimes Enforcement Network (FinCEN) named the exchange a primary money laundering concern on November 6 over alleged ties to Russian illicit finance. The order has not taken legal effect yet. Even so, rival platforms appear to be screening MEXC money on their own before any U.S. rule requires them to.

Deposits held at OKX, Binance and Gate

According to user reports gathered since the announcement, MEXC deposits arriving at OKX have gone through risk assessments, and some customers waited longer than usual for the money to reach their accounts. Binance users describe similar compliance reviews. At Gate, some transfers were reportedly delayed or moved into a refund-review procedure. Bitget Wallet went further, according to users, because its bank-card top-up service stopped accepting funds traced to MEXC.

None of the three large exchanges has published a formal policy on MEXC transfers. That means nobody can yet confirm how many customers are affected, how much money is involved or how long the holds last. Nothing reported so far points to a full block on MEXC deposits.

Treasury’s $16.7B case against MEXC

Treasury announced the measure under an initiative it calls Operation Economic Outcast. FinCEN’s findings cover May 2021 to May 2026. The agency says MEXC handled transactions tied to Russian sanctions evasion, Iranian financial networks, North Korean activity and cybercrime. It also says MEXC kept dealing with Garantex, the sanctioned Russian exchange, and with its successor Grinex as recently as June 2026. MEXC says it bars customers from sanctioned jurisdictions, and Treasury’s case rests on the distance between that policy and the flows the agency says it found.

Treasury Secretary Scott Bessent framed the action around Iran, saying financial institutions cannot “have it both ways” by serving the Iranian regime and keeping access to the U.S. financial system. FinCEN puts MEXC’s activity with Garantex after its 2022 designation at about $129 million, and with Grinex after its August 2025 designation at $4.1 million.

Source: U.S. Treasury, FinCEN. Categories may overlap.

FinCEN puts MEXC’s total Iran-linked exposure at more than $1.87 billion, of which over $1 billion went directly to Iranian exchanges.

These numbers are regulatory findings that no court has tested yet. Some categories overlap, so adding them up would give a misleading total.

Why rival exchanges screen early

Centralized exchanges check incoming deposits with blockchain analytics tools, which give each transfer a risk score based on where the coins came from. Once the U.S. government labels an exchange a money laundering concern, transfers from that exchange’s wallets get a higher score automatically. Exchanges with U.S. banking partners or U.S. users face what compliance teams call counterparty risk: dealing with a flagged platform could later bring regulators or banking problems to their own door. FinCEN’s order says the finding is meant to put U.S. and foreign financial institutions and regulators on notice, which gives exchanges outside the U.S. a reason to screen MEXC money even though the ban itself does not bind them.

For customers, this creates a gap between two systems. A withdrawal can be complete and confirmed on the blockchain while the receiving platform keeps the funds out of the user’s balance, asks for documents showing where the money came from, or starts sending it back.

Illustrative process, not a confirmed workflow at any exchange.

Exchanges have done this before without any direct legal order. On September 2, OKX founder and CEO Star Xu warned on X that deposits from high-risk channels, including Telegram guarantee groups and Huiwang, could trigger AML reviews lasting 15 days or longer, with funds and some account functions restricted in the meantime. He was replying to a user whose transfer from a sports betting platform had been flagged by the exchange.

What the U.S. order covers

FinCEN issued the order under Section 9714 of the Combating Russian Money Laundering Act. Once it takes effect, covered U.S. financial institutions may not send funds to MEXC Global or receive funds from it, and that includes crypto transfers. The order does not close MEXC’s international business. It does not freeze customer holdings, and it does not require exchanges outside the U.S. to reject MEXC flows. The ban starts 30 days after the order is published in the Federal Register, and no publication date had been confirmed when Treasury announced the action.

MEXC said its legal and compliance teams are reviewing the order and that it plans to engage with regulators. The company also announced an independent review of its AML and sanctions controls, and it says operations are normal and customer assets are safe. Chief executive Vugar Usi said the order concerns dealings with U.S. financial institutions, not the whole global business, and that it does not freeze or seize any assets held on the platform.

$126M leaves MEXC wallets in 24 hours

DeFiLlama data for November 7 showed net outflows of $126.03 million from tracked MEXC wallets over 24 hours, leaving about $4.353 billion in tracked assets. FinCEN’s order put MEXC’s reserves at about $5 billion as of June 2026, alongside more than $1 billion in daily trading volume. The 24-hour window overlaps with the announcement, so not every withdrawal was a reaction to FinCEN. The tracked balance also only counts coins in known exchange wallets. On its own, it cannot show whether MEXC holds enough to cover what it owes customers.

Where MEXC users face friction now

For people with money on MEXC, the practical risk is now at the receiving end. Before moving assets, it makes sense to check the destination platform’s current deposit terms and to keep transaction hashes and withdrawal records that show where the funds came from. A confirmed transfer may still sit in review for some time. Official statements from OKX, Binance or Gate would show whether these holds are case-by-case decisions or a policy covering all MEXC funds. Publication in the Federal Register will set the date when U.S. institutions have to cut ties.

FinCEN estimates MEXC held about 9% of the global centralized exchange market as of December 2025, far more than Bitzlato and PM2BTC, the two crypto platforms targeted under Section 9714 in 2023 and 2024. That makes this the heaviest use of the authority against a crypto business so far. The outcome of MEXC’s independent review and its talks with regulators will likely affect whether non-U.S. banks, payment processors and card top-up partners start the same kind of screening that exchanges have already begun on their own.