What happened
The Independent Community Bankers of America sued the Office of the Comptroller of the Currency on 2 October 2026. The 39-page complaint asks the US District Court for the District of Columbia to set aside the OCC rule and interpretive letter that support limited-purpose national trust bank charters for crypto companies.
The dispute is about what a national trust bank may do. A full-service bank can take insured deposits and make loans. A limited-purpose trust bank can instead hold and administer assets without offering the same deposit and lending business. That distinction matters because the two charters do not carry the same requirements.
ICBA argues that the National Bank Act lets the OCC charter a non-depository trust bank only for fiduciary work. Its complaint says the OCC went further by allowing non-fiduciary digital-asset custody, trading and settlement under a federal charter. It asks the court to invalidate the March 2026 chartering rule, Interpretive Letter 1176 and the conditional approval of Protego Trust Bank.
These are the plaintiff's allegations. No judge has ruled that the OCC exceeded its authority.
What the charter changes
A national charter can let a trust company operate across state lines under one federal supervisor. It can also pre-empt some state rules. For a crypto custodian, that may be simpler than obtaining and maintaining separate state licences.
The trade-off is easy to miss. A limited trust bank generally does not take ordinary insured deposits or make conventional loans. Its customers therefore should not assume that assets held with it have the same legal status or FDIC protection as cash in a checking account.
ICBA says this creates an uneven system: crypto trust banks receive the credibility and nationwide reach of a federal charter without all of the capital, liquidity, community-reinvestment and deposit-insurance obligations imposed on community banks. The OCC has not filed its answer. It told CoinDesk that it does not comment on litigation.
Why it matters for bitcoin
The immediate issue is institutional custody, not the Bitcoin protocol. A trust charter can determine which regulated firms may hold private keys, settle transfers and serve advisers or companies that do not want to custody bitcoin themselves.
If ICBA ultimately wins, some federally chartered crypto custodians could face a narrower list of permitted activities or need a different licence. If the OCC wins, its national trust charter route would remain available. Either outcome could affect the number of custody providers, their compliance costs and the contracts offered to Bitcoin clients.
The case does not change personal self-custody. A person who controls their own keys is not using a bank charter at all. It also does not decide whether one custody model is technically safer. A charter defines legal authority and supervision; operational security still depends on key management, access controls, recovery procedures and the terms governing customer assets.
What remains uncertain
The complaint begins a case. It does not suspend the OCC rule, cancel a charter or prove ICBA's claims. The government can contest ICBA's standing, its reading of the National Bank Act and the requested remedy. The court could also rule narrowly rather than decide the entire charter framework.
ICBA represents banks that compete with the new trust companies, so its description of the risks is an advocacy position. Crypto trust companies may argue that custody and settlement are valid trust activities and that federal supervision is more consistent than a state-by-state regime.
Reuters, The Wall Street Journal, CoinDesk and Cointelegraph independently reported the filing. They agree that the case challenges the OCC's statutory authority. The complaint is the primary source for the legal claims and requested relief.