FinCEN withdraws 2023 crypto mixer rule and 2020 self-hosted wallet proposal

The US Treasury's Financial Crimes Enforcement Network (FinCEN) withdrew both of its pending crypto rulemakings, The Block reported, citing a "chilling effect on legitimate activity" in notices signed by Deputy Director Jimmy L. Kirby. The two withdrawals — the 2023 proposal on convertible virtual currency mixing and the 2020 proposal on self-hosted wallets — kill the Biden-era privacy-restriction agenda in one week.

What went away

1. The 2023 mixing rule. Proposed in October 2023 under Section 311 of the USA PATRIOT Act, this rule would have designated international convertible virtual currency mixing as "a class of transactions of primary money laundering concern." Banks and covered institutions would have had to file reports on each mixing transaction, including wallet addresses, transaction hashes and IP addresses.

2. The 2020 self-hosted wallet rule. Proposed December 23, 2020 in the final weeks of the first Trump administration and never finalized, this rule would have required banks and money services businesses to verify counterparty identity for transfers above $3,000 to or from non-custodial wallets, and to report to FinCEN transfers above $10,000. Journal du Coin notes the 2021 consultation drew more than 7,500 objections — a record for FinCEN.

Both withdrawal notices are signed by Kirby and reference FinCEN notice 2026-20430.

The stated reason

Kirby's notice says the mixing rule's broad scope could produce "a chilling effect on legitimate activity" and impose excessive reporting burdens on banks and money services businesses. The notice cites the July 2025 President's Working Group on Digital Asset Markets report, which acknowledged that "lawful users of digital assets may leverage mixers to enable financial privacy."

The self-hosted wallet withdrawal references the same Working Group output and an earlier January 23, 2025 Presidential Working Group directive that prioritized citizen access to public blockchains for lawful use.

Why this matters

The 2023 mixing proposal was the Biden-era answer to Tornado Cash: a rule designed to make US-banked flows to or from any mixer reportable through the Bank Secrecy Act's Section 311 mechanism. Withdrawing it removes the parallel administrative path FinCEN could have taken independently of OFAC's SDN authority.

The 2020 self-hosted wallet proposal was the regulatory mechanism that would have forced centralized exchanges to collect KYC on counterparties on the other side of a withdrawal. Its withdrawal confirms that FinCEN is not going to require exchanges to identify a self-custody address before sending to it.

Neither action affects:

• OFAC sanctions enforcement on specific addresses (Tornado Cash contracts aside, the SDN list stands).
• Bank Secrecy Act reporting obligations exchanges already have under existing FinCEN guidance (SARs, CTRs).
• Travel Rule compliance for VASP-to-VASP transfers.

Pattern

The withdrawals land the same week the CFTC opened its own crypto-exchange rulemaking (Regulation CTX / CAM), part of a broader US pivot away from the ex-ante restriction playbook the 2020–2024 Treasury had assembled around self-custody and mixing. Enforcement against specific mixer-linked flows under OFAC sanctions, wire fraud and the BSA's existing SAR regime continues; it is the sweeping ex-ante reporting regime that is being dismantled.

Action checklist

1. If you built compliance plumbing against the 2020 self-hosted wallet thresholds ($3,000 recordkeeping, $10,000 reporting), you can retire that work queue.
2. Mixer-flow screening at banks and MSBs stays voluntary under existing SAR/CTR rules — the Section 311 designation that would have made it mandatory is gone.
3. Watch for the Federal Register publication of notice 2026-20430 for the final text and effective date.