21 Crypto Firms Have OCC National Trust Bank Charters. Community Bankers Just Filed Suit to Take Them All Back.

TL;DR

• ICBA filed suit October 2, 2026 in D.C. federal court challenging the OCC’s authority to grant national trust bank charters to crypto firms and fintechs
• The lawsuit targets the OCC’s March 2026 final rule (12 CFR 5.20), Interpretive Letter 1176 (January 2021), and the Protego Holdings conditional charter approval
• Per the complaint, the OCC has approved or conditionally approved 21 national trust bank charters during the current administration; at least 13 involve crypto firms
• ICBA invokes the major questions doctrine and the “side door” argument: non-depository charter holders operate with federal banking authority but without FDIC insurance or consolidated supervision
• For compliance teams at charter holders: this is a litigation risk worth tracking, not background noise

The OCC has spent most of the last five years arguing that its chartering authority under the National Bank Act is broad enough to cover non-depository trust institutions — companies that want the legal infrastructure of a national bank charter without the obligation to accept FDIC-insured deposits.

Community banks have spent most of the last five years arguing that this interpretation is wrong, bad for competition, and dangerous for consumers.

On October 2, 2026, the Independent Community Bankers of America stopped arguing in public and filed in court.

The case — ICBA v. OCC, No. 1:26-cv-03441, U.S. District Court for the District of Columbia — targets three specific OCC actions: the March 2026 final rule amending 12 CFR 5.20 (the chartering regulation), Interpretive Letter 1176 (issued January 2021, the OCC Chief Counsel’s interpretation of what national trust banks may do), and the conditional national trust bank charter issued to Protego Holdings in February 2026.

The practical stakes are significant. According to the complaint, the OCC has approved or conditionally approved 21 national trust bank charters during the current administration, at least 13 involving crypto firms. ICBA is asking the court to vacate the March 2026 rule, bar future charters under it, vacate Interpretive Letter 1176, and vacate Protego’s conditional approval.

What National Trust Bank Charters Actually Are

The national trust bank charter comes from the OCC’s authority under the National Bank Act to charter national banking associations. Section 27(a) of the Act expressly contemplates national banks whose operations are limited to those of a trust company — the question is how far beyond fiduciary work those operations can reach.

The OCC’s view, developed through interpretive letters and regulatory action over the past decade, is that the trust bank variant of the charter is different. Trust companies conduct fiduciary business — managing assets, serving as custodian, providing settlement and clearance services. The OCC has long chartered trust companies that don’t accept demand deposits, and it has progressively extended that framework to modern digital asset activities.

OCC Interpretive Letter 1176, issued in January 2021, concluded that a national trust bank chartered under 12 U.S.C. § 27(a) is not limited to fiduciary activities and may engage in any activity permissible for a state trust company. That interpretation is what lets crypto custody firms hold trust charters without becoming deposit-taking institutions. (The OCC’s crypto custody letter was a separate one, Interpretive Letter 1170, from July 2020.)

The March 2, 2026 final rule (91 FR 9977, effective April 1, 2026) made the structure more explicit. It amended 12 CFR 5.20, replacing the term “fiduciary activities” with “the operations of a trust company and activities related thereto,” to clarify that national trust banks may engage in non-fiduciary activities in addition to fiduciary ones.

The practical result: crypto firms that receive national trust bank charters can tell their institutional clients that they operate under federal banking supervision and hold a national bank charter. That’s a meaningful competitive claim. It’s also what community banks find intolerable.

The ICBA’s Legal Theory

The ICBA lawsuit rests on two main pillars, backed by Administrative Procedure Act claims.

Pillar 1: The National Bank Act doesn’t authorize non-depository, non-fiduciary charters

The ICBA’s core statutory argument is that the National Bank Act authorizes only three kinds of national banks: traditional depository banks engaged in the business of banking, bankers’ banks, and national trust banks exercising fiduciary powers. ICBA says the March 2026 rule — by replacing “fiduciary activities” with “the operations of a trust company and activities related thereto” — unlawfully created a fourth category: institutions that neither take deposits nor exercise fiduciary powers.

Alongside that, ICBA brings Administrative Procedure Act claims: that the rule exceeds the OCC’s authority under the National Bank Act and 12 U.S.C. § 92a, that Interpretive Letter 1176 was a binding rule issued without notice and comment, and that Protego’s approval lacked statutory authority and was arbitrary and capricious.

The argument has a familiar ancestor. The Conference of State Bank Supervisors and New York’s Department of Financial Services challenged the OCC’s fintech charter program starting in 2017, arguing that “the business of banking” requires taking deposits. What’s different now is that the legal landscape has shifted significantly since then.

In 2024, the Supreme Court decided Loper Bright Enterprises v. Raimondo, overruling Chevron deference. Under Chevron, courts would defer to an agency’s reasonable interpretation of an ambiguous statute. Under Loper Bright, courts interpret statutes themselves. An OCC position that might have survived Chevron-era review as a “reasonable interpretation” of an ambiguous statutory term now has to survive a court’s independent judgment about what the statute actually means.

Pillar 2: The major questions doctrine

Even if the National Bank Act is ambiguous about non-depository charters, the ICBA argues that ambiguity can’t support the OCC’s action under the major questions doctrine.

Post-West Virginia v. EPA (2022) and post-Loper Bright (2024), the major questions doctrine operates as a clear-statement rule for regulatory actions of vast economic and political significance. When an agency claims authority to resolve a major question — one that carries significant economic, political, and structural consequences — courts require that the agency’s statutory authority be clear, not merely arguable.

Creating a new pathway for major crypto firms to operate as federally chartered banking institutions — with the legal protections and credibility that status confers — is, the ICBA argues, exactly the kind of major question that requires congressional clarity. Section 27(a) does mention trust banks, but ICBA’s position is that the OCC is claiming sweeping new authority from an old statute without a clear congressional authorization. That, the ICBA contends, isn’t enough.

The “Side Door” Argument: Why FDIC Status Matters

The ICBA’s litigation framing emphasizes what national trust bank charter holders don’t have: FDIC insurance and the supervisory framework that comes with it.

Traditional deposit-taking banks operate within an interlocking regulatory structure. FDIC insurance protects depositors. FDIC supervision — along with OCC or Federal Reserve supervision depending on charter type — ensures the institution maintains capital, manages risk, and meets safety and soundness standards. The Federal Reserve’s consolidated supervision covers bank holding companies. The resolution framework under the Federal Deposit Insurance Act provides an orderly process when banks fail.

National trust bank charter holders that don’t accept FDIC-insured deposits step outside significant portions of that framework. They’re supervised by the OCC. They’re not subject to FDIC supervision. They don’t offer depositor protection. They may not be subject to Federal Reserve consolidated supervision. In some cases, they’re not subject to the resolution authority the FDIC exercises over failing banks.

Community banks call this the “side door” into the federal banking system: firms that want the competitive benefits of a federal charter — the prestige of “national bank” status, the ability to operate across state lines under federal preemption, the legal clarity that federal charter status provides for crypto custody activities — without accepting the supervisory burdens that deposit-taking institutions carry.

ICBA’s public framing centers on consumers. As ICBA President and CEO Rebeca Romero Rainey put it: “Digital assets held at a crypto firm operating under a national trust charter do not carry those safeguards.”

Who Holds These Charters and What’s at Stake

Protego Holdings’ conditional approval is the one specific charter action the complaint asks the court to vacate. But the challenge to the March 2026 rule and Interpretive Letter 1176, if successful, could have implications well beyond Protego.

The OCC has approved or conditionally approved 21 national trust bank charters during the current administration, at least 13 involving crypto firms, according to the complaint. The category includes firms providing institutional cryptocurrency custody services that compete with traditional bank custody operations.

For compliance teams at firms holding national trust bank charters or conditional approvals, the risk calculus is specific:

1. Conditional approvals are more exposed. Protego’s conditional approval is the one specific charter action the complaint asks the court to vacate, and ICBA also asks the court to bar future charters under the March 2026 rule. How a ruling would reach charters that are already final is an open question — but the legal basis for charters relying on the challenged rule and interpretive letter is implicated.

2. Contingency planning is not optional. Compliance programs at charter holders should assess what their operating model looks like if the OCC’s chartering authority is narrowed. What activities currently rely on the national trust bank charter for legal authorization? What alternative frameworks exist (state trust company charters, broker-dealer registration, other federal licensing pathways)?

3. The litigation timeline is long. The lawsuit was filed in October 2026 in district court. Timing is uncertain; district court rulings in APA cases often take a year or more. Appeals could extend the timeline further. The legal uncertainty will be background noise for some time.

How This Connects to the Broader Regulatory Picture

The ICBA v. OCC lawsuit arrives in the middle of a broader restructuring of the crypto regulatory landscape. The OCC’s final GENIUS Act implementation rules on stablecoin reserve requirements are scheduled to take effect in November 2026 — rules that depend on the OCC’s chartering and supervisory authority being intact. The OCC’s July 2026 national trust bank charter guidance for stablecoin issuers established the pathway that Protego and others have followed. FinCEN’s withdrawal of unhosted wallet and crypto mixer rules illustrates how regulatory fragmentation in the crypto space keeps compliance teams on uncertain footing.

What the ICBA lawsuit adds is legal risk at the charter level — not just uncertainty about which rules apply to which activities, but uncertainty about whether the underlying authorization to operate as a national trust bank is legally sound.

Post-Loper Bright, courts are interpreting statutes for themselves rather than deferring to agency interpretations. That shift has made the OCC’s interpretive positions more vulnerable to judicial review than they were five years ago when the fintech charter challenges were working through the courts. That’s the backdrop for this suit.

Key Sources

• Federal Register: OCC Final Rule, National Bank Chartering, 91 FR 9977 (March 2, 2026)
• OCC Interpretive Letter 1176: Chief Counsel’s Interpretation on National Trust Banks (January 2021)
• Independent Banker: ICBA Sues OCC Over National Trust Bank Charters for Crypto Firms
• Consumer Finance Monitor: ICBA Sues OCC Over Crypto National Trust Bank Charters (Oct. 5, 2026)
• Loper Bright Enterprises v. Raimondo, 603 U.S. 369 (2024)