The Office of the Comptroller of the Currency (OCC) issued a landmark interpretive letter on March 7, 2025, dramatically expanding the permissible crypto-related activities for U.S. banks. The new guidance, titled Interpretive Letter 1183, confirms that national banks and federal savings associations may now engage in crypto-asset custody, certain stablecoin functions, and participation in independent node verification networks—including distributed ledger consensus mechanisms—without the need for prior regulatory approval.
Acting Comptroller Rodney E. Hood emphasized that the OCC expects banks to maintain robust risk management controls consistent with those applied to traditional activities, but the agency is committed to reducing “excessive” regulatory burdens. “Today’s action will reduce the burden on banks to engage in crypto-related activities and ensure that these bank activities are treated consistently by the OCC, regardless of the underlying technology,” Hood stated. The OCC supervises approximately 1,200 national banks and federal savings associations, along with some 50 federal branches of foreign banks, which collectively hold over two-thirds of all U.S. commercial bank assets.
Key Regulatory Changes
The new letter explicitly rescinds OCC Interpretive Letter 1179 (issued in 2021), which had required banks to obtain supervisory nonobjection and demonstrate adequate controls before engaging in crypto activities. The OCC also withdrew its participation in two interagency statements that previously highlighted crypto-associated risks for traditional banks, signaling a decisive shift in regulatory posture. The most impactful change is the removal of the “prior approval” requirement—banks can now proceed with crypto custody, stablecoin reserve management, and node validation after simply notifying the OCC, rather than waiting for explicit permission.
The guidance further clarifies that community banks are included under the new framework, ensuring that smaller institutions can also participate in the digital asset ecosystem without facing disproportionate compliance hurdles. This is particularly significant for regional and rural banks looking to offer crypto-based services to their customers.
Scope of Permissible Activities
The OCC outlined three key areas now open to supervised institutions:
- Cryptocurrency Custody: Banks can hold private keys on behalf of customers, offering safekeeping for Bitcoin, Ethereum and other digital assets. The OCC previously authorized custody in 2020 (Interpretive Letter 1170) but later imposed additional conditions; those conditions are now eliminated.
- Stablecoin Activities: Banks may hold reserves backing fiat-pegged stablecoins, issue their own stablecoins (subject to applicable state/federal laws), and facilitate redemption. The OCC emphasized stablecoin reserves must be fully backed and properly disclosed.
- Independent Node Validation: Banks can run full nodes for permissionless blockchains (e.g., Bitcoin, Ethereum) and earn transaction fees or block rewards as validators, provided they comply with anti-money laundering (AML) and Office of Foreign Assets Control (OFAC) requirements.
The OCC also stressed that its supervisory oversight of these activities will continue through routine examinations, focusing on crypto custody, stablecoin reserve integrity, and distributed ledger payment system compliance.
Market Implications and Next Steps
Industry experts view the new letter as a catalyst for institutional crypto adoption. With 1,200 banks now legally empowered, the pipeline for crypto-to-fiat on-ramps and off-ramps is likely to widen significantly. Custody services, which require deep trust and regulatory compliance, are expected to see the earliest uptake. Large banks such as JPMorgan Chase, Bank of America, and Wells Fargo (all OCC-supervised) are already exploring crypto custody, and the new clarity may accelerate their rollout.
Stablecoin issuers, including Circle (USDC) and Paxos (USDP), stand to benefit as banks can now serve as reserve custodians without facing potential regulatory friction. The move also aligns with broader federal efforts to establish a clear legal framework for digital assets, including the Lummis-Gillibrand Responsible Financial Innovation Act and the Biden administration’s recent executive order on crypto regulation (though the new OCC guidance transcends any single administration).
However, the OCC did not waive any AML or Know Your Customer (KYC) rules. Banks must still implement robust transaction monitoring, reporting suspicious activity, and complying with Bank Secrecy Act requirements. The agency specifically warned against using crypto activities to circumvent existing sanctions.
“I will continue to work diligently to ensure regulations are effective and not excessive, while maintaining a strong federal banking system,” Hood concluded. With the new letter effective immediately, banks are expected to file revised business plans with the OCC within 90 days if they intend to start new crypto activities. The regulatory landscape for U.S. crypto banking has fundamentally changed, and the race to integrate digital assets into traditional finance is now officially underway.