"Either you support the Iranian regime, or you have access to the U.S. financial system," Treasury Secretary Scott Bessent said in the release announcing the action, per Blockchain Reporter. Four days later, the world's largest crypto exchange acted on those words.
Binance told users on November 10 that it would no longer handle transfers touching MEXC. Outbound transfers to thirteen listed MEXC-linked entities will be declined outright. Deposits arriving from them will be held for compliance review, and accounts that keep dealing with them face further restriction, including being offboarded. The move lands a full month before the US ban itself takes effect on December 10. Binance is not a US financial institution, so the FinCEN order does not bind it directly. It enforced the finding early anyway: the banks, payment processors and custodians that move its money are covered institutions, and keeping MEXC rails open would put that access at risk.
The order came from FinCEN, the Treasury's financial crimes unit, on November 6. Issued under Section 9714, a provision of the US statute targeting Russian money laundering, it designates MEXC Global a financial institution of primary money-laundering concern in connection with Russian illicit finance. FinCEN says MEXC moved at least $16.7 billion in likely illicit transactions between May 2021 and May 2026, tied to sanctions evasion, cybercrime and darknet activity. Nearly $1.5 billion of that total connects to Russian sanctions evasion, including about $232 million in direct dealings with entities sanctioned by the US, the EU and the UK. The order covers MEXC's subsidiaries, branches and offices outside the US, and it carries no end date.
The four dates that set the cutoff
November 6: FinCEN issues the Section 9714 order. The $16.7 billion figure goes on the record. MEXC says it is reviewing the order with its legal and compliance teams.
November 7: Florida token issuer NatGold Digital asks MEXC to delist its gold token at once. OKX founder Star Xu tells users not to send funds straight from MEXC to OKX.
November 10: The order reaches the Federal Register as document 2026-22962, fixing the start of the US prohibition at December 10. Binance publishes its notice the same day and starts enforcing it at once.
December 10: The US prohibition takes effect. From that date, American banks, brokers and money transmitters that shift funds to or from MEXC Global face civil and criminal penalties.
The numbers behind the order
The order covers the five years ending in May 2026. FinCEN warns its figures span different periods and overlap, so they should not be added together.
| FinCEN figure | Amount |
|---|---|
| Transactions FinCEN calls likely illicit | $16.7 billion |
| Russian-linked sanctions evasion | Nearly $1.5 billion |
| Direct deals with sanctioned entities | $232 million |
| Flows via 40-plus Iranian exchangers | Over $1 billion |
| Garantex and Grinex deals after designation | $129 million and $4.1 million |
| MEXC daily transactions | Over $1 billion |
MEXC is not on the OFAC sanctions list, so a sanctions screen alone would never catch it. That is what gives Binance's named list its weight: six legal entities from the Treasury order, plus a Comoros vehicle, two brand names, a former name and a catch-all for affiliates. The exchange has done this before. In August it cut off 16 platforms across three rounds, starting with Shelbit and Aban Tether Exchange on August 7 and adding HTX and ten more on August 23 under an EU Russia-sanctions regulation. MEXC is the first name on that list whose cutoff was prompted by a FinCEN special measure instead of a sanctions designation.
Why it matters
A cutoff from the largest venue changes the map for MEXC's customers even though no customer assets are frozen. MEXC said its platform kept running as usual and user assets remain secure, and the order itself touches no balances. What it does is narrow the routes in and out. CoinGecko's table had MEXC at 15,618 BTC of 24-hour spot volume at 07:00 UTC on November 11, next to 111,832 BTC for Binance, per Blockchain Reporter: about 14% of Binance's volume, or roughly $1.15 billion a day at bitcoin's $73,557 price at the same timestamp. The question now is whether other large venues follow before December 10. OKX has warned its users already; Bitget matched Binance's August restrictions within a day. If either publishes a named list of its own, the cutoff becomes an industry standard. The OKX-ICE tokenized stock venture showed how fast regulators and exchanges can now move in step, and the Binance exchange page tracks the venue's standing across these shifts.
What to watch
- December 10, when the US prohibition takes effect and US institutions must stop moving funds to or from MEXC Global.
- Whether OKX or Bitget publish a named MEXC list before that date.
- MEXC's promised independent review of its anti-money-laundering and sanctions checks: who runs it, when it lands, and whether findings are published.
- How long withheld deposits stay under Binance review, and whether reviews clear in days or stall.
- MEXC withdrawal and volume data over the next two weeks for signs the cutoff is biting.
Key points
- Binance blocked transfers to thirteen MEXC names on November 10; outbound transfers are declined, inbound deposits are held for compliance review.
- FinCEN's November 6 order designates MEXC a primary money-laundering concern, citing $16.7 billion in likely illicit flows from May 2021 to May 2026.
- The US ban takes effect December 10, a month after the order reached the Federal Register on November 10.
- MEXC says its services run normally and user assets are secure; it is reviewing the order with legal and compliance teams.
- Binance acted a month early. It is not covered by the order because it is not a US financial institution.
MarketRadar take
The headline figure needs its own arithmetic before anyone repeats it as a daily flow. Spread $16.7 billion across the 1,826 days in that window and it comes to about $9.1 million a day. Set that against MEXC's roughly $1.15 billion in daily spot volume and the cited flows equal about 0.8% of daily throughput. The Russian-linked $1.5 billion is about 9% of the cited total. That does not soften the finding: the designation is a control-failure verdict, and FinCEN says MEXC kept processing Garantex and Grinex deals after both were designated. It does mean the $16.7 billion is a five-year cumulative estimate, not a claim that most of MEXC's book was illicit. Binance's early move reads as balance-sheet defense rather than obedience. Its own dollar access runs through covered institutions, and a venue that waits for December 10 risks arguing with its banks instead. For MEXC users the practical exposure is wider than a direct transfer: Binance's notice covers indirect transactions too, so a counterparty routing through MEXC can trigger a review on an account that never touched the exchange.
