Block Seeks a National Trust Charter for Builders Bank
Block has applied for a federally regulated national trust bank called Builders Bank & Trust — an uninsured charter that would sit alongside its existing industrial bank.
Block, the financial technology company, has applied to establish Builders Bank & Trust, a federally regulated, uninsured national trust bank, according to WSJ Markets on September 8, 2026.
Block, the financial technology company behind Square and Cash App, has filed to establish a new federally regulated bank called Builders Bank & Trust. The proposed institution would be a national trust bank that does not take insured deposits — a narrow, specialised charter that has become the preferred route into the federal banking system for technology firms that want a supervised legal identity without becoming a conventional lender.
The application was reported by WSJ Markets. Block has not, in the facts available, disclosed a timeline, a capital commitment or a launch date for the entity.
What an uninsured national trust bank actually is
A national trust bank is chartered by a federal banking regulator, but it is not the kind of bank that funds itself with customer deposits and lends the money out. "Uninsured" means exactly that: the entity would not carry federal deposit insurance, because it would not be holding insured retail deposits in the first place. Its permitted activities are fiduciary and custodial — safekeeping assets, acting as trustee or agent, settling and administering property that belongs to someone else.
That distinction matters more than it sounds. A deposit-taking bank is supervised for credit risk, liquidity and the safety of the insurance fund. A trust bank is supervised largely for whether it can be trusted to hold other people's property and keep the records straight. The capital, examination and resolution regimes are different, and the application is a narrower ask.
For a firm like Block, the appeal is direct federal legitimacy for custody and fiduciary functions across state lines, rather than assembling the same capability from a patchwork of state licences and bank partnerships.
Why this does not replace Square Financial Services
Block already operates an industrial bank, Square Financial Services, chartered in Utah. An industrial bank can take insured deposits and make loans — it is how Block funds small-business lending to Square sellers. But an industrial bank charter is a lending and deposit vehicle. It is not built for holding customer assets in a fiduciary capacity at national scale.
A trust charter would sit alongside it, not on top of it. In practice, a two-charter structure lets a fintech separate two very different risk profiles: the balance-sheet business of lending on one side, and the agency business of holding assets that never belong to the company on the other. Regulators generally prefer that separation, and so do the auditors who have to draw the ring-fence around customer property if anything goes wrong.
The obvious question is what assets Builders Bank & Trust would hold. The application facts made public do not say. Block's business spans merchant payments, consumer money movement through Cash App, and bitcoin-related products — all of which involve holding value on behalf of someone else at some point in the chain.
The charter route fintechs have been taking
The trust charter has become the path of least resistance for technology firms seeking federal bank status. It asks for less from the regulator — no deposit insurance fund exposure, no consumer lending oversight of the same intensity — and it delivers most of what a payments or custody business needs.
What applicants get in return is not trivial:
- A single federal supervisor instead of dozens of state money-transmitter regimes
- The ability to describe custody arrangements to institutional counterparties in language they already accept
- Standing that is materially harder for a partner bank to withdraw at short notice
- A supervisory relationship that survives changes in the political weather better than an unchartered arrangement does
What it does not get them is a licence to expand into deposit-taking later without going back to the regulator. Charters are granted for specified activities, and applications are conditioned. Approval, if it comes, tends to arrive with commitments attached — on capital, on governance, on how quickly the entity may grow.
How the market treated the news
The market data supplied for the company named in this story shows a last traded price of 80.10, down 3.21% on the session from a prior close of 82.76, within a day range of 79.97 to 82.34, as of 20:00 GMT on September 8, 2026. The exchange listing and currency for that quote were not specified in the data provided, so the figure is reported as given rather than characterised.
The broader tape closed lower on the same day. The S&P 500 tracker closed at $765.96, down 0.55%, from a prior close of $770.19. The Dow 30 tracker fell 1.13% to $528.03. The Nasdaq 100 tracker was close to flat, ending at $718.36, off 0.08% from $718.96. In other words, the session was broadly negative for large-cap US equities, which complicates any attempt to read a single stock's move as a verdict on a charter application filed the same day.
What decides whether this gets approved
Bank charter applications are slow, and fintech charter applications have historically been slower. The variables that matter are procedural rather than dramatic: whether the regulator considers the proposed activities to fall genuinely within fiduciary powers, whether the parent company's structure creates a supervisory blind spot, and whether incumbent banking trade groups file objections during the comment period. They usually do.
Three things are worth watching from here. First, whether Block discloses the intended scope of Builders Bank & Trust — the specific asset classes and customer types it expects to serve. Second, whether the application draws formal opposition, and on what grounds. Third, whether the eventual decision comes with conditions narrow enough to blunt the strategic point of applying in the first place.
A trust charter is a modest-sounding instrument that can do a lot of work in a payments company's architecture. It is also the kind of application that can sit in a queue for a long time without producing news. For now, the fact of the filing is the story; the terms of any approval will be the more consequential one.
Key facts
- Proposed entity: Builders Bank & Trust, a federally regulated, uninsured national trust bank
- Applicant: Block, a financial technology company
- Quote for company named in lead (XYZ): 80.10, -3.21%, as of 20:00 GMT, Sept 8, 2026 (exchange and currency not specified)
- Market backdrop: S&P 500 tracker closed $765.96 (-0.55%); Dow 30 tracker $528.03 (-1.13%)
Frequently asked questions
What is a national trust bank?
A national trust bank is a federally chartered institution whose permitted business is fiduciary and custodial work — holding, safekeeping and administering assets that belong to customers — rather than taking deposits and making loans. Because it does not hold insured retail deposits, it operates without federal deposit insurance and is supervised primarily on how reliably it handles other people's property.
What has Block applied for?
Block, the financial technology company, has applied to establish Builders Bank & Trust, a federally regulated national trust bank that would be uninsured. That means the proposed entity would not carry federal deposit insurance because it is not designed to hold insured customer deposits. The application was reported by WSJ Markets on September 8, 2026.
How is this different from Square Financial Services?
Square Financial Services is Block's Utah-chartered industrial bank, which can take insured deposits and make loans — it funds lending to Square merchants. A national trust charter covers a different function entirely: custody and fiduciary services. The two would sit alongside each other, separating balance-sheet lending risk from the agency business of holding customer assets.
Does an uninsured charter mean customer money is unprotected?
Not automatically. Uninsured means the entity does not carry federal deposit insurance, because it is not structured to hold insured deposits. Trust banks hold assets in a fiduciary capacity, so those assets legally belong to the customer rather than the bank, and are meant to be segregated. The protections come from fiduciary law and supervision rather than from an insurance fund.
How did Block shares move on the day of the report?
The market data supplied for the company named in the lead shows a last traded price of 80.10, down 3.21% from a prior close of 82.76, with a day range of 79.97 to 82.34, as of 20:00 GMT on September 8, 2026. The exchange and currency were not specified in the data provided.
How long do bank charter applications take?
There is no fixed timetable, and applications from technology firms have historically moved slowly. Regulators assess whether proposed activities fall within permitted powers, whether the parent structure creates supervisory gaps, and whether trade groups or other parties object during the public comment period. Approvals, when granted, commonly arrive with conditions on capital, governance and growth.
Sources
- Block Applies to Establish Builders Bank & Trust — WSJ Markets
Photo: cottonbro studio · Pexels Licence — source
