FinCEN Withdraws Mixer and Wallet Rules Shifting Crypto Treasury Management

The U.S. Treasury Department’s Financial Crimes Enforcement Network (FinCEN) made a significant shift in crypto regulation on October 5, 2026, by withdrawing two long-standing proposals. The 2023 mixing rule and the 2020 self-hosted wallet reporting rule, both of which had created uncertainty for crypto treasury management, were officially dropped. This move immediately eased compliance burdens for startups and decentralized autonomous organizations (DAOs), allowing them to reconsider the use of privacy-preserving tools that were previously deemed risky.

The withdrawal of these rules marks a policy shift that began with the President’s Working Group on Digital Asset Markets’ 2025 report. Regulators are now distinguishing between lawful financial privacy and illicit activities, rather than treating privacy-enhancing tools as inherently suspicious. For crypto treasury managers, this means a return to existing Bank Secrecy Act (BSA) obligations, with a focus on risk-based approaches that acknowledge legitimate privacy needs.

Concrete implications for treasury operations include a reduced need for on-chain analytics that flagged all mixer usage as suspicious. Companies can now reassess their custody architectures, potentially moving back to self-custody solutions that were previously discouraged due to reporting requirements. DAOs, in particular, benefit from this change as they rely heavily on self-custodied multisigs for governance and operations.

While the withdrawal of these rules reduces regulatory pressure, risks remain. State regulators and international jurisdictions may still impose their own restrictions on mixers and privacy tools. Treasury managers are advised to update their compliance policies, maintain transparent transaction records, and stay informed about jurisdictional nuances to ensure continued compliance.