Custodia Loses 7-3 in Five-Year Fed Master Account Fight

Custodia Bank's five-year battle for a Federal Reserve master account ran out of runway on Friday when the full U.S. Court of Appeals for the 10th Circuit refused to rehear the case, voting 7-3 against an en banc review that would have given the Wyoming crypto bank one last shot at reversing a string of losses stretching back to March 2024.

How Did the 10th Circuit Rule Against Custodia?

The denial locks in an October 2025 panel ruling — itself a 2-1 decision — that found the Federal Reserve holds broad discretion to approve or deny master account applications from eligible depository institutions. No statutory right exists. No guaranteed access. Just discretion, exercised however the regional Fed banks see fit.

That logic had already survived a March 2024 district court challenge in Wyoming reaching the same conclusion, and now the full circuit has ratified it with a lopsided majority. For Custodia, there is essentially nowhere left to go at the appellate level.

Founded by Wall Street veteran Caitlin Long, Custodia is a Wyoming-chartered special purpose depository institution that applied for a master account in October 2020. The Kansas City Fed told the bank in early 2021 that the application contained "no showstoppers." Two years later, in January 2023, it was denied — the stated reason being concerns about Custodia's crypto-heavy business model.

The Dissent That Deserves More Attention

Judge Timothy Tymkovich wrote the dissent, and it is sharp. He argued the majority's interpretation effectively hands regional Federal Reserve Banks unchecked authority over which state-chartered institutions can participate in the U.S. payments system — without any meaningful check from officials who are appointed through the constitutional process.

"Without a master account, a bank cannot operate in the modern banking system," Tymkovich wrote in his dissent. The implication is blunt: denying one is functionally a veto on a state-issued bank charter, which chips away at the dual banking structure the U.S. has maintained for over a century. Judge Allison Eid signed onto the dissent.

The constitutional dimension here is not trivial, and Tymkovich's framing is exactly the kind of Article II argument that, in different circumstances, might attract Supreme Court interest. Former solicitors general Paul Clement and Don Verrilli had already appeared as amici at earlier stages of this case — which is not something that happens when a dispute is legally unremarkable.

Without a master account, a bank cannot operate in the modern banking system.

What Does the Kraken Approval Mean for Custodia?

The timing is genuinely brutal. Days before the 10th Circuit closed Custodia's door, the Federal Reserve Bank of Kansas City granted Kraken Financial a limited-purpose master account — making the crypto exchange's banking subsidiary the first crypto-native firm in history to receive one. Same Kansas City Fed. Different outcome.

TD Cowen analyst Jaret Seiberg called the Kraken approval the first of many. Fed Governor Christopher Waller had already floated the concept of a "skinny master account" — a stripped-down version that gives eligible institutions access to payment rails while excluding perks like discount window lending or interest on reserves. The Fed Board is now actively building out that framework, according to TD Cowen.

The Fed also recently withdrew the restrictive 2023 guidance that had shaped its posture toward crypto firms, including Custodia. So the regulatory ground has shifted — not because any court forced it to, but because the Fed chose to move. That distinction stings if you are Custodia. They litigated for five years to achieve what Kraken received by waiting.

Does Custodia Have Any Path Forward?

A Supreme Court petition for certiorari is the one remaining move. It is a long shot — the Court takes fewer than 100 cases a year from thousands of petitions — but the constitutional questions Tymkovich flagged, combined with the high-profile amici already on the record, give the petition more credibility than most. No certainty, but a real argument.

A person familiar with the bank's efforts said on Friday that Custodia is still pursuing access. Whether that means a cert petition, a fresh master account application through the new administrative channels the Fed is building, or both is unclear. Custodia has not responded to requests for comment.

In the meantime, the bank has kept building. Last year it launched the Avit stablecoin in partnership with Vantage Bank — a signal that Long is not waiting for a court ruling to find ways to move.

What This Ruling Means for Crypto Banking Access

Here is the uncomfortable read: the courts have now confirmed at every level that the Fed can deny master accounts to state-chartered depository institutions for whatever reason it deems sufficient. There is no statutory floor. That is a significant amount of gatekeeping power for an institution whose regional bank presidents are not Senate-confirmed.

The Custodia case established the legal precedent that crypto-focused state banks have no right to Fed payment rails — only an application process with no guaranteed outcome. The Kraken approval, conversely, shows the Fed is willing to let crypto in when it decides to, on its own terms, through its own new frameworks. Courts did not open that door. The Fed did.

Caitlin Long has built something real in Wyoming over five years. She built it under the assumption that legal access to the payments system was achievable through the courts. That assumption was wrong. The question now is whether the administrative route Kraken used is open to Custodia — and whether the bank's specific history with the Kansas City Fed makes that path harder than it looks on paper.