Block Applies for Bank Charter to Custody Bitcoin: What It Means for Crypto Accounting
Jack Dorsey's payments company Block has submitted an application for a US bank charter, with Bitcoin custody identified as a core intended use. If the Office of the Comptroller of the Currency (OCC) grants the licence, Block would hold digital assets under a federal banking framework, a move that carries material consequences for accounting firms, CFOs, and the wider digital asset compliance ecosystem. For practitioners who rely on robust crypto accounting software to track custodian relationships and asset positions, the application is a regulatory signal worth taking seriously right now, not after approval.
What Block Is Actually Applying For
A national trust bank charter issued by the OCC allows a non-depository institution to offer fiduciary and custodial services under federal oversight. Crucially, it does not allow the entity to take insured deposits in the conventional sense, but it does subject the holder to federal capital requirements, examination schedules, and the Bank Secrecy Act (BSA) obligations that come with banking status.
Why a Trust Charter Rather Than a Full Commercial Licence
The trust charter route is narrower and faster than applying for a full commercial banking licence. Several crypto-adjacent firms have explored this path precisely because it unlocks the ability to custody assets with federal regulatory backing, without the overhead of deposit insurance and Federal Reserve membership. For Block, which already operates Cash App and a broad payments infrastructure, the trust charter would sit alongside existing money transmission licences rather than replace them.
The OCC has previously signalled openness to crypto-native applicants for similar licences. The application therefore lands in a more receptive regulatory environment than would have existed even two or three years ago, though OCC approval is never automatic and the review process can take many months.
The AML and Licensing Implications
Federal banking status transforms Block's compliance posture and, by extension, the posture of any counterparty that relies on Block for custody or settlement.
Bank Secrecy Act Obligations at the Entity Level
A chartered national trust bank is a "financial institution" under the BSA, which means it must maintain a formal anti-money-laundering programme, file Suspicious Activity Reports (SARs), conduct Customer Due Diligence (CDD) and, where applicable, Beneficial Ownership identification under FinCEN rules. Block already carries BSA obligations as a money services business, but the charter would intensify OCC supervisory scrutiny and require the firm to meet bank-grade examination standards on a recurring basis.
Counterparty Due Diligence for Accounting Firms and CFOs
When a custodian becomes a federally chartered bank, the risk profile assigned to that custodian changes across the board. Accounting firms advising clients who hold Bitcoin with Block, and CFOs whose treasury functions use Block's infrastructure, will need to update their third-party risk assessments. Under generally accepted auditing standards (GAAS), the custodian's regulatory standing is directly relevant to the evaluation of safeguarding controls, so a chartered status may actually reduce certain audit risk flags, but it creates new documentation requirements to evidence that assessment.
For firms that track AML exposure across their client portfolio, our earlier analysis of Block's OCC national trust bank charter filing and its crypto accounting implications sets out the specific BSA programme elements that auditors should be checking.
Accounting Treatment of Bitcoin Held in Custody
The charter application forces a practical accounting question: when a federally regulated entity holds Bitcoin on behalf of a client, how does that change the balance sheet treatment for both the custodian and the beneficial owner?
FASB ASC 350-60 and Fair Value Measurement
Under the Financial Accounting Standards Board's updated guidance on crypto assets (ASC 350-60, effective for fiscal years beginning after 15 December 2024), entities holding Bitcoin for their own account must measure it at fair value each reporting period, with changes flowing through the income statement. That rule applies to the holder of the economic interest, not necessarily the legal title holder.
Where Bitcoin is held in custody by a third party, the question of whether the asset appears on the beneficial owner's balance sheet turns on control and the substance of the custodial arrangement. A federally chartered custodian operating under explicit trust law is far more likely to produce a custodial agreement that clearly separates the custodian's own assets from client assets, which is exactly the structure needed to keep Bitcoin off the custodian's balance sheet and on the client's. Accounting teams should obtain and review the specific custodial agreement terms once Block's charter is confirmed, rather than assuming the existing agreement language is sufficient for audit purposes.
How Digital Asset Accounting Software Needs to Respond
Any digital asset accounting software used to track Bitcoin custody positions must be able to flag the regulatory status of each custodian, record changes in that status, and generate audit-ready reports that distinguish between self-custody, exchange custody, and bank-grade fiduciary custody. As more tech-native firms pursue bank charters, this categorisation will become a standard field in chart-of-accounts design and in reconciliation workflows. Firms that have not yet built custodian-classification logic into their crypto bookkeeping software should treat Block's application as a prompt to do so.
Capital and Reporting Consequences for Block Itself
As a chartered national trust bank, Block would be subject to OCC capital adequacy requirements. These are distinct from the capital rules applied to full commercial banks under Basel III, but they are not trivial. The OCC requires trust banks to maintain a minimum level of capital relative to their fiduciary assets under management, and it subjects them to periodic on-site examinations.
Financial Statement Disclosures
Block is a publicly listed company and already files with the SEC. A granted bank charter would add a layer of regulatory financial reporting, including call reports filed with banking regulators, on top of its existing GAAP-based SEC filings. For institutional counterparties, the ability to review both sets of filings will improve transparency around Block's financial health, but it also means that any adverse regulatory finding could become a public record with faster disclosure timelines than a standard SEC event. Audit committees at firms that use Block should build that into their vendor risk calendars.
What Comes Next and How to Prepare
The OCC review process involves a formal application period, a public comment window, and an examination of the applicant's business plan, capital adequacy, and compliance infrastructure. Approval is not guaranteed, and the timeline is uncertain. However, the direction of travel is clear: tech-native firms with significant digital asset volumes are moving toward federal banking frameworks, and the compliance and accounting ecosystems need to move with them.
Practical Steps for Accounting Firms and CFOs
There are several concrete actions worth taking now, regardless of how long OCC approval takes. First, review every existing custodial agreement that touches digital assets and identify the regulatory classification of each custodian. Second, confirm that your chart of accounts and reconciliation processes can accommodate a new custodian category once Block's status changes. Third, brief your audit committee or engagement partner on the potential change to custodian risk ratings. Fourth, check whether your current AML programme requires updating to reflect the possibility that a key counterparty is transitioning from money-services-business status to bank status, since the Travel Rule obligations and CDD documentation requirements differ between those categories.
The legislative backdrop matters too. Pending federal crypto legislation could accelerate or complicate the OCC's timeline. For context on how Congressional scheduling affects crypto regulatory milestones, see our piece on how Congress's September recess affects pending crypto tax bills.
Frequently Asked Questions
Does a national trust bank charter allow Block to hold insured deposits?
No. A national trust bank charter issued by the OCC is a non-depository licence. It allows the holder to provide fiduciary and custodial services but does not grant access to FDIC deposit insurance or Federal Reserve membership. Client Bitcoin held under a trust charter is custodied under fiduciary law, not covered by deposit protection schemes.
How does Block's charter application affect my client's Bitcoin balance sheet treatment?
The accounting treatment of Bitcoin held with any custodian depends on the structure of the custodial agreement and who holds legal title versus economic interest. A bank-chartered custodian is more likely to produce clearly drafted fiduciary agreements that keep client assets off the custodian's balance sheet, but you should review the specific contract terms and apply FASB ASC 350-60 fair-value measurement rules to the beneficial owner's position regardless of custodian status.
What BSA obligations would Block face as a chartered trust bank?
As a chartered national trust bank, Block would be a financial institution under the Bank Secrecy Act and subject to OCC examination of its AML programme, CDD procedures, Beneficial Ownership rules, and SAR filing processes. These obligations overlap with its existing money-services-business requirements but are subject to more intensive supervisory scrutiny under a banking licence.
Should I update my firm's third-party risk assessment for Block now, before the charter is granted?
Yes, but in a staged way. Document the current regulatory status and flag the pending application. Set a trigger to re-run the full assessment once OCC approval is confirmed or denied. This avoids doing duplicate work while ensuring the change is captured promptly in your vendor risk register.
Will Block's bank charter affect the Travel Rule obligations of firms that transact with it?
Potentially, yes. The Travel Rule obligations for transactions involving a federally chartered bank may differ from those involving a money services business, depending on transaction type and counterparty classification. Firms should revisit their Travel Rule implementation once Block's charter status is confirmed and update their virtual asset service provider counterparty records accordingly.
Source: Decrypt