FinCEN Withdraws 2023 Crypto Mixing Rule Over Concerns…

Published: October 5, 2026 – 18:27 UTC

The U.S. Financial Crimes Enforcement Network is withdrawing two long-running crypto rule proposals that would have expanded reporting around cryptocurrency mixers and self-hosted wallets, ending measures first proposed in 2023 and 2020 without changing financial institutions' existing obligations.The more recent proposal would have designated international convertible virtual currency mixing as a class of transactions of “primary money laundering concern” under Section 311 of the USA PATRIOT Act. A separate proposal dating to December 2020 would have imposed identity-verification, recordkeeping and reporting requirements on certain transactions involving unhosted wallets.FinCEN said concerns about legitimate privacy use and compliance burdens contributed to its decision on mixing. The move follows a broader change in Treasury's treatment of blockchain privacy, which FinanceFeeds examined when the department acknowledged legitimate uses for crypto mixers in a March report to Congress.

Why Did FinCEN Abandon the Crypto Mixing Proposal?

The 2023 proposal was unusually broad. FinCEN had used Section 311 for the first time to target an entire class of transactions rather than an individual institution or jurisdiction, finding that international crypto mixing presented a primary money laundering concern.Under the proposed special measure, covered financial institutions would have reported transactions they knew or suspected involved mixing. Information could have included the amount and type of cryptocurrency, wallet addresses, transaction hashes, IP addresses and identifying information about customers.FinCEN's definition extended beyond conventional mixing services. It included techniques such as pooling assets, splitting transfers into multiple transactions, using single-use wallets, swapping between digital assets and introducing user-controlled transaction delays.Commenters argued that such a definition could capture ordinary blockchain activity and privacy practices that were not inherently suspicious. FinCEN now says the scope could have chilled legitimate activity while creating a substantial reporting burden for regulated institutions.The withdrawal does not mean FinCEN now considers mixers low-risk. The agency said illicit actors continue to use them to obstruct investigations and that it will continue monitoring mixing activity for money laundering, terrorist financing and other illicit finance. FinanceFeeds previously covered the earlier policy debate when Treasury officials said the government was not seeking an outright ban on mixers.

Investor Takeaway

The withdrawal reduces the risk that ordinary privacy-enhancing blockchain activity will automatically trigger a dedicated federal reporting regime. It does not remove existing anti-money-laundering requirements or prevent FinCEN from targeting specific services linked to illicit finance.

What Happened to the Self-Hosted Wallet Rules?

FinCEN is separately ending a proposal introduced during the final weeks of the first Trump administration that would have placed additional obligations on banks and money services businesses dealing with self-hosted wallets.The proposal would have required institutions to verify their customers and keep transaction and counterparty records when transactions above $3,000 involved an unhosted wallet or certain foreign-hosted wallets.Transactions exceeding $10,000, or multiple transactions exceeding $10,000 within 24 hours, would have triggered reporting to FinCEN in addition to customer verification requirements.The agency said it will take no further action on the proposal. Because the measure was never finalized, its withdrawal does not remove a compliance requirement currently imposed on banks, exchanges or other money services businesses.Existing Bank Secrecy Act obligations remain relevant for regulated crypto businesses. FinanceFeeds' overview of FinCEN's cryptocurrency framework details how money services businesses remain subject to registration, anti-money-laundering programs and suspicious-activity reporting even without the withdrawn wallet rule.

Investor Takeaway

Self-custody is not being exempted from the broader U.S. financial-crime framework. The practical change is that FinCEN will not impose the additional transaction-specific verification and reporting architecture envisioned in the 2020 proposal.

Is U.S. Policy Toward Crypto Privacy Changing?

The two withdrawals fit a wider policy change that increasingly distinguishes lawful financial privacy from illicit efforts to hide criminal proceeds.The President's Working Group on Digital Asset Markets said in July 2025 that lawful digital-asset users may use mixers to preserve privacy on transparent public blockchains. Treasury reinforced that position in its March 2026 report to Congress while still identifying mixers as tools frequently used by cybercriminals, ransomware groups and state-linked actors.The policy shift has also followed litigation over Tornado Cash. Treasury removed the Ethereum-based mixer from its sanctions list in March 2025 after courts challenged the government's authority to sanction immutable smart contracts, and FinanceFeeds later reported that the related court fight ended after the sanctions were withdrawn.FinCEN's latest action therefore narrows two proposed regulatory approaches without abandoning enforcement against illicit crypto flows. For exchanges, wallet providers and investors, the distinction is increasingly between privacy technology itself and the conduct occurring through it.

Investor Takeaway

The withdrawals reduce two sources of regulatory uncertainty for self-custody and privacy-focused crypto infrastructure, but they are not a general safe harbor for mixers. Future enforcement is more likely to focus on identifiable illicit activity and regulated intermediaries' existing AML duties rather than treating broad categories of privacy transactions as inherently suspect.

Source: FinanceFeeds