FinCEN Withdraws Crypto Wallet and Mixer Proposals

The Treasury Department’s Financial Crimes Enforcement Network (FinCEN) has withdrawn two proposed rules covering crypto transfers to unhosted wallets and transactions involving mixers, ending rulemakings that could have expanded financial institutions’ data collection. In its withdrawal announcement on October 5, the agency said it had considered public comments and was acting as part of the administration’s effort to make digital asset rules “fit-for-purpose.” Neither proposal had taken effect, so the decision removes proposed requirements rather than reversing rules already in force.

What would the wallet proposal have required?

The 2020 proposal would have required banks and money services businesses to verify customers’ identities and keep records when a counterparty used an unhosted wallet and a transaction exceeded $3,000. For transactions above $10,000, including multiple transfers totaling more than that amount in 24 hours, firms would have had to report information to FinCEN. An unhosted wallet is one where the user controls the keys, rather than leaving custody with an exchange or another financial institution.

The proposed reporting threshold was not a general rule for every crypto transfer: it applied when a bank or money services business handled a transaction involving an unhosted wallet or certain wallets at foreign institutions outside Bank Secrecy Act coverage. The recordkeeping threshold was lower than the reporting threshold, and both would have made regulated intermediaries collect information about customers and counterparties in transactions involving wallets that the intermediaries did not control. FinCEN’s withdrawal notice says it will take no further action on that proposal.

Why did FinCEN drop the mixer proposal?

FinCEN withdrew its October 2023 finding that international convertible virtual currency mixing was a class of transactions of primary money-laundering concern, along with the proposed special measure that would have imposed enhanced reporting and recordkeeping. The Federal Register withdrawal notice says commenters objected that the proposal’s broad definition of mixing could chill legitimate activity and create a large reporting burden.

That definition covered more than services marketed as mixers. It included methods such as pooling funds, splitting transfers, using single-use addresses, exchanging between digital assets and delaying transactions to make deposits and withdrawals harder to match. The proposal would have required covered institutions to report details including transaction amounts, wallet addresses, transaction hashes and IP addresses when they knew or suspected a transaction involved mixing.

FinCEN said illicit actors continue to use mixers to hinder investigations, but the withdrawal notice also cites the July 2025 President’s Working Group report, which recognized that lawful users may use mixers to protect privacy on public blockchains. The agency says it will continue monitoring mixer activity and may take future steps against illicit finance. That leaves enforcement and narrower policy options available, while ending this proposed, broad reporting framework.

What changes now, and what remains to watch?

The immediate change is regulatory: banks and money services businesses will not face the added duties described in these two proposals. For users of self-custody, the decision removes a proposed requirement to identify counterparties in certain transfers. For mixer users and providers, it withdraws both the money-laundering finding and the associated proposal for enhanced reporting. It does not resolve the wider tension between tracing illicit funds and preserving privacy on public blockchains.

The next signals are whether FinCEN develops a narrower approach to transactions it considers suspicious, how it applies its stated monitoring of mixers, and whether future rules distinguish more clearly between illicit activity and ordinary privacy practices. The withdrawals close two long-running proposals; they do not rule out new action under other authorities.

Source material

• withdrawal announcement — fincen.gov
• Federal Register withdrawal notice — federalregister.gov