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# Treasury moves to cut crypto exchange MEXC off from US banks over $16B in illicit flows
- URL: https://venture-block.com/fincen-mexc-order-16b-illicit-flows/
- Published: 2026-11-08T14:11:24.000Z
- Updated: 2026-11-08T14:11:24.000Z
- Description: FinCEN says MEXC Global handled at least $16 billion tied to Russian, Iranian and North Korean sanctions evasion and cybercrime. Its order will bar US financial institutions from moving funds to or from the exchange.
- Author: Venture Block
- Tags: Policy, Tech

The U.S. Treasury's Financial Crimes Enforcement Network (FinCEN) issued an order on November 6 that will bar U.S. financial institutions from sending money to or receiving money from MEXC Global, a crypto exchange that Treasury says [facilitated at least $16 billion in illicit transactions](https://home.treasury.gov/news/press-releases/sb0685?ref=venture-block.com) between May 2021 and May 2026.

The order does not freeze MEXC's assets or sanction the company in the usual sense. It closes the doors that connect MEXC to American banks, payment firms and other regulated institutions, including crypto transfers. According to Treasury, it takes effect 30 days after it is published in the Federal Register.

MEXC said in a [statement on its website](https://www.mexc.com/announcements/article/statement-regarding-fincen-s-november-6-order-17827791539626?ref=venture-block.com) that it is reviewing the order with its legal and compliance teams, that the platform is operating normally and that user assets remain secure. The company said it intends to engage with FinCEN and other regulators and has started an independent review of its anti-money-laundering and sanctions controls.

## What Treasury says MEXC did

Treasury describes MEXC as one of the 20 largest crypto exchanges in the world. Founded in 2018, it processed more than $1 billion in transactions a day as of September 2026, held about $5 billion in reserves, and offered trading in more than 3,000 cryptocurrencies and tokenized assets, according to the department.

The exchange's own rules prohibit use by people in jurisdictions such as Iran and North Korea. Treasury says "severe deficiencies" in its anti-money-laundering controls let those users through anyway. The department's breakdown of the $16 billion includes:

- Nearly $1.5 billion linked to Russian sanctions evasion, of which $232 million was in direct transactions with entities sanctioned by the U.S., EU and UK.
- Transactions with Garantex, the Russian exchange Treasury's Office of Foreign Assets Control designated in April 2022, and its successor Grinex, as recently as June 2026.
- At least $26 million benefiting the sanctioned A7 network and almost $200 million connected to A7A5, a stablecoin Treasury says the network uses to help clients evade sanctions.
- About $1 billion in direct transactions with more than 40 Iranian crypto exchanges, and about $22 million tied to Iran's central bank and the Islamic Revolutionary Guard Corps and its Qods Force.

Treasury also says the exchange handled ransomware and scam payments and darknet market activity. These are the government's findings. MEXC's statement does not address the specific figures.

## Why a Russia law is doing the work

Treasury announced the action as part of Operation Economic Outcast, its campaign against Iran's access to global finance, and Treasury Secretary Scott Bessent framed it in those terms. "Financial institutions cannot have it both ways: Either you support the Iranian regime, or you have access to the U.S. financial system," he said.

The legal basis is narrower. The order was issued under section 9714(a) of the Combating Russian Money Laundering Act, which lets FinCEN name a foreign institution a "primary money laundering concern" in connection with Russian illicit finance. As [CoinDesk noted](https://www.coindesk.com/business/2026/11/07/u-s-treasury-moves-to-cut-off-crypto-exchange-mexc-over-usd16-billion-in-alleged-illicit-flows?ref=venture-block.com), that means the order formally rests on MEXC's alleged Russian dealings rather than its Iranian ones.

FinCEN has used this tool on crypto exchanges before, but on much smaller ones. Its first section 9714 order, in January 2023, [targeted Bitzlato](https://www.fincen.gov/news/news-releases/fincen-identifies-virtual-currency-exchange-bitzlato-primary-money-laundering?ref=venture-block.com), which the agency said laundered funds for Russian ransomware groups including Conti. In September 2024 it [named PM2BTC](https://www.fincen.gov/news/news-releases/treasury-takes-coordinated-actions-against-illicit-russian-virtual-currency?ref=venture-block.com), a Russian exchanger, alongside OFAC sanctions on the exchange Cryptex. CoinDesk reports that MEXC is the largest exchange targeted under the provision so far.

The order sits inside a wider push. [Decrypt reported](https://decrypt.co/382758/treasury-cuts-off-crypto-exchange-mexc-us-financial-system?ref=venture-block.com) that Treasury designated the A7 network a transnational criminal organization last month and has blacklisted the Iranian exchange Nobitex over its role in moving crypto to the IRGC.

## What changes for banks and crypto firms

Once the order is in force, any U.S. financial institution that moves funds to or from MEXC risks civil or criminal penalties, according to Treasury. The department says the order does not change existing Bank Secrecy Act duties, such as filing suspicious activity reports, or obligations under OFAC sanctions.

For U.S. crypto companies, the practical effect is on flows. Exchanges, custodians and payment firms that count as financial institutions will need to identify and block transfers to and from MEXC wallets, which means screening at the level of blockchain addresses rather than bank accounts. Startups that route liquidity or customer withdrawals through offshore venues may need to review those links before the order takes effect.

MEXC had already started pulling back from the market at the center of the case. CoinDesk reports that the exchange said last month it would stop serving users in Russia and Belarus.

The [EU's case against TikTok's feed design](https://venture-block.com/eu-tiktok-for-you-feed-rabbit-holes-dsa/) and the regulatory fights behind [Kalshi's push to become a broader exchange](https://venture-block.com/kalshi-1b-series-g-40b-valuation-exchange/) are other recent examples of regulators shaping how platforms grow. For MEXC, the next fixed point is publication of the order in the Federal Register, which starts the 30-day clock before U.S. institutions must cut it off.