OCC said federal banks could hold reserves for certain stablecoins

The Office of the Comptroller of the Currency said on September 21, 2020, that national banks and federal savings associations could hold deposits serving as reserves for certain stablecoins. Interpretive Letter 1172 treated that service as an application of the traditional authority to receive deposits, giving federally chartered institutions a clearer legal basis for banking qualifying stablecoin issuers.

The conclusion was deliberately narrow. It covered tokens associated with hosted wallets, backed by one fiat currency and redeemable by the holder on a 1:1 basis for that currency. The bank also had to verify at least daily that the reserve-account balance equaled or exceeded the issuer’s outstanding tokens. The OCC expressly declined to address transactions involving unhosted wallets or stablecoins using other collateral and stabilization designs.

Why the interpretation mattered

Stablecoin issuers depended on conventional financial institutions to safeguard the money presented as backing their digital tokens. Before Interpretive Letter 1172, banks could rely on their general deposit-taking powers, but the absence of crypto-specific guidance left uncertainty about whether the OCC considered these relationships permissible. The letter connected a blockchain product to an established banking function without creating a new charter or statutory category.

That distinction mattered institutionally. A reserve account could place a regulated bank inside the operational structure supporting a privately issued token, while leaving the token issuer responsible for redemption. It also gave banks a potential role in verifying that the promised reserve relationship existed. The interpretation did not make a stablecoin a bank deposit, guarantee redemption or establish that every token holder received federal deposit-insurance protection.

The OCC’s accompanying release attributed to Acting Comptroller Brian Brooks the claim that national banks and federal savings associations were already handling stablecoin-related activity involving billions of dollars each day. That was a contemporaneous agency characterization, not a reproducible market measurement: the release supplied no instruments, institutions, venues, methodology or observation window beyond “each day.” It therefore shows how the OCC framed the market’s importance, but cannot support a precise estimate of stablecoin volume.

Permission came with controls

Interpretive Letter 1172 required banks to conduct due diligence proportionate to the risks of a stablecoin issuer relationship. It identified Bank Secrecy Act and anti-money-laundering compliance, customer identification, beneficial-owner verification, liquidity risk and applicable securities laws among the relevant obligations. The OCC also said banks should use contracts and verification mechanisms to ensure reserve balances remained at least as large as the outstanding token count.

Deposit insurance required separate analysis and accurate disclosure. The letter explained that a reserve account might be structured as a deposit belonging to the issuer or, if pass-through requirements were satisfied, as deposits attributable to underlying holders. Permission to accept the reserve therefore did not establish which party owned the bank deposit or whether a particular holder had insured status.

The SEC preserved a separate question

SEC FinHub staff responded on September 21, 2020, that whether a digital asset labeled a stablecoin was a security remained a facts-and-circumstances determination. Staff said some digital assets could be structured and sold without constituting securities, but warned that terminology did not control the federal securities-law analysis.

The SEC document was a staff statement, not a Commission rule, and it created no new legal obligations. Read together, the two records divided the event-day picture cleanly: the OCC recognized a bank’s authority to hold narrowly defined reserve deposits, while SEC staff declined to grant stablecoins categorical treatment under securities law.

What remained unresolved on September 21

The OCC interpretation did not authorize banks to issue stablecoins, operate blockchain payment networks or support unhosted-wallet transactions. It did not evaluate any named token or certify an issuer’s reserves. Its significance on September 21, 2020, was narrower but concrete: federally supervised banks received an official legal interpretation permitting a specified reserve-account service, subject to ordinary banking law and risk controls.