The first clue is usually in the smallest type on the homepage. Mercury is a fintech company, not a bank. Novo is a fintech, not a bank. Relay’s banking services are provided by Thread Bank. Found’s are provided by Lead Bank. Bluevine’s are provided by Coastal Community Bank. These are not semantic disclaimers drafted to annoy the marketing team. They describe the product.
A business owner experiences one login, one balance and one support desk. Legally and operationally, the money may travel through several institutions. The software company handles the interface, categorization, permissions and workflows. A regulated bank opens or maintains the deposit account, clears payments and sits inside the federal deposit-insurance system. A sweep program may then place pieces of a balance at still more banks.
That arrangement can be useful. It has produced accounts with better controls, faster onboarding and bookkeeping that feels designed in this century. It can also encourage a lazy comparison. If every app advertises FDIC coverage and a blue debit card, the decision collapses into fees and aesthetics. The expensive questions are elsewhere: Who is the bank? Is the customer named directly or represented through a custodial structure? Does a sweep happen automatically? Where can the customer see each destination? Who reconciles the ledger?
The insurance badge has conditions
The FDIC’s consumer guidance is unusually plain: money sent to a nonbank company is not eligible for deposit insurance until it is deposited at an FDIC-insured bank and the other conditions are met. Insurance protects against the failure of an insured bank. It does not protect against the insolvency of the fintech itself.
Pass-through coverage is the bridge. It can treat the business as the owner even when a third party holds or places the deposit. According to the FDIC, the funds must actually belong to the principal; the bank’s records must reveal the agency or custodial nature of the account; and records maintained in good faith must identify each owner and that owner’s interest. If those requirements fail, the pooled account may be insured only to the named account holder, aggregated with that holder’s other deposits.
The Synapse bankruptcy made the distinction concrete. Synapse was a nonbank intermediary serving fintech programs. When it failed in 2024, partner banks struggled to reconcile its records, and customers lost access to funds for months. The banks had not failed, so the familiar FDIC receivership machinery was not the event in play. The FDIC cited the episode when proposing stronger recordkeeping for custodial accounts with transactional features. The lesson is narrower and more useful than “fintech is risky”: accurate records and direct bank visibility are part of the safety system.
The balance on screen is a claim about a ledger. Good diligence asks who can prove that claim when the screen is unavailable.YesPress analysis
Five products, different plumbing
The current public disclosures divide the group into distinct structures. Mercury names Choice Financial Group and Column N.A. on its customer support pages and offers sweep access through partner-bank networks. Novo names Middlesex Federal Savings, F.A.; its current agreement permits that bank to place funds through a StoneCastle network, while its customer pages advertise the standard $250,000 protection. Relay names Thread Bank and says Thread uses IntraFi for an insured cash sweep. Found’s July 2026 agreement names Lead Bank, describes the customer account as a subaccount of an omnibus account held for the customer’s benefit, and says Lead may use an IntraFi placement network. Bluevine names Coastal Community Bank and maintains a sweep program that places balances at program banks.
| Platform | Disclosed bank layer | Publicly described structure | Advertised eligible coverage |
|---|---|---|---|
| Mercury | Choice Financial Group; Column N.A. | Partner-bank sweep networks; allocations available in sweep statements | Up to $5 million |
| Novo | Middlesex Federal Savings, F.A. | Middlesex may place funds at banks in a StoneCastle network; Reserves are not separate accounts | Up to $250,000 on current customer pages |
| Relay | Thread Bank | IntraFi insured cash sweep through Thread and program banks | Up to $3 million |
| Found | Lead Bank | Subaccount of an omnibus account; agreement permits IntraFi placement | Up to $250,000 on current legal page |
| Bluevine | Coastal Community Bank | Automatic placement into program-bank deposit accounts under sweep terms | Up to $3 million |
Those headline limits are helpful, but they are not a ranking. A company with $80,000 of operating cash may prefer a simple relationship with one named bank. A startup holding $2 million before a large payroll run may value automatic distribution. A retailer that deposits cash may need a branch-based bank regardless of the software. Structure should match the job.
Sweep mechanics deserve a close read. Mercury says a new deposit may take up to 24 business hours to be allocated to a program bank. Bluevine’s disclosure explains that program banks pay fees tied to balances and that Bluevine and Coastal may retain a portion of interest. Found’s agreement permits deposit placement but its public legal page still describes coverage up to $250,000. These details are not accusations. They are reminders that the marketing number summarizes a contract with timing, allocation and eligibility rules.
Partner-bank risk is a product feature
A bank partner brings its own balance sheet, regulators, compliance posture and operational capacity. A fintech can change partners, and the transition can require customers to accept new terms or move account activity. Mercury’s 2025 account of its model said it was transitioning away from Evolve Bank & Trust while working with other insured institutions. The software remained Mercury; the legal home of some deposits changed.
This is why “Member FDIC” is the beginning of diligence, not the end. Confirm the bank in the FDIC’s BankFind Suite. Read the latest account agreement rather than a review written two years ago. Look for enforcement actions and financial reports. Ask whether statements name the bank and, for sweeps, list the destinations. Check your company’s direct deposits at those destination banks, because duplicate exposure can reduce effective coverage.
A cash-policy test you can run today
- Download the current deposit agreement and sweep disclosure.
- Write the fintech, sponsor bank, custodian and program banks in one chain.
- Save the latest statement and allocation report outside the app.
- Compare destination banks with every other account your company owns.
- Keep a second operating account and payment rail ready for payroll or taxes.
There is also a human question: If access stops on Thursday afternoon, who answers on Friday morning? Some platforms route customers through app chat; some publish phone support; the underlying bank may have a separate escalation path. Test support before the emergency. Put treasury authority, recovery credentials and bank contact details somewhere the founder does not exclusively control.
The best outcome is not to abandon fintech. It is to buy the software with a clear view of the financial supply chain underneath. Mercury, Novo, Relay, Found and Bluevine can each be sensible for a particular business. Their dashboards help teams operate money. Their disclosures tell teams where that money legally lives. Read both.
Questions business owners ask
Are these five companies banks?
No. They are fintech or software companies providing access to banking services through FDIC-insured partner banks. The named bank enters the legal account structure and provides regulated deposit services.
Does FDIC insurance cover a fintech failure?
No. FDIC insurance addresses the failure of an insured bank. A nonbank failure can still interrupt access or create reconciliation issues even when customer funds were intended to sit at an insured bank.
How does pass-through insurance work?
It allows coverage to be calculated for beneficial owners whose funds are held through an agent or custodian, if actual ownership, account-record disclosure and owner-level recordkeeping requirements are satisfied.
Does a sweep guarantee the advertised maximum?
No. Eligibility depends on where funds are placed, timing, recordkeeping and the customer’s other deposits at each destination bank in the same ownership category.
Which account is right for my business?
Match the structure to your balance, payment needs, cash-deposit needs, support expectations and tolerance for operational complexity. Large balances may benefit from sweeps; every business benefits from a backup payment rail.