A business deposit at a US fintech is money held at one or more partner banks, often called sponsor banks, because most fintechs that offer business accounts are not banks themselves. The fintech supplies the app, the cards and the customer service, while a chartered bank holds the money, usually in a pooled for-benefit-of (FBO) account. Whether that money is covered by FDIC insurance depends on records that identify each business as an owner, and the insurance pays out only if the bank fails, not if the fintech does.

How it works

A sponsor bank is a chartered, FDIC-insured bank that lets a non-bank company offer accounts using the bank’s licence, deposit insurance and access to payment networks such as ACH and the card schemes. When a business opens an account, its money is placed in an account at the bank titled in the name of the fintech or an intermediary “for the benefit of” its customers. One FBO account can hold the money of thousands of businesses.

Who keeps the ledger

The bank sees one pooled balance, so someone must keep the sub-ledger showing how much belongs to each customer. In some arrangements the bank keeps individual records itself. In others the fintech keeps the ledger and sends the bank files. In a third model, a middleware or banking-as-a-service provider sits between many fintechs and many banks and keeps the ledger for all of them. Each added layer between the customer and the bank’s books is another place where the numbers can drift apart.

What FDIC insurance covers and what it does not

FDIC insurance covers deposits at an insured bank up to the standard maximum of $250,000. Money in an FBO account can be insured “pass-through” to each underlying business, as if each had deposited directly, but only if three conditions are met. Under the FDIC’s pass-through rules, the funds must in fact belong to the customers rather than the fintech, the bank’s account records must show the custodial nature of the account, and the records must show the identity of each owner and the size of its share. If those conditions are not satisfied, the FDIC insures the money to the named account holder, typically the fintech, and much of it may be uninsured.

The second limit matters more to fintech customers. Deposit insurance is paid only when an insured bank fails. In its 2024 proposal on custodial accounts, the FDIC stated that its insurance does not protect consumers or businesses against the default, insolvency or bankruptcy of non-bank companies, even when those companies hold funds at an insured bank. If a fintech or its ledger provider collapses and the records are wrong, the FDIC has no role in making up the difference.

How sweep networks raise coverage

To offer cover above $250,000, banks and fintechs use deposit sweep networks. With IntraFi’s ICS service, a customer deals with one bank, which places the money with other banks in the network in increments that do not exceed the FDIC standard maximum, so each slice is insured at a different bank and the total coverage can reach millions of dollars. X Money launched in the US in late June 2026 offering up to $10 million of FDIC coverage through a sweep network (our report). The extra cover still depends on accurate records and offers nothing if the fintech itself fails.

What the Synapse collapse showed

Synapse Financial Technologies was a middleware company that linked fintech apps to partner banks including Evolve Bank & Trust, Lineage Bank and AMG National Trust Bank. It filed for Chapter 11 bankruptcy on 22 April 2024. After Synapse stopped maintaining Evolve’s dashboard access on 11 May 2024, the banks froze end-user activity. When they compared Synapse’s records with their own, they found they held less money for consumers than Synapse’s records showed. The Consumer Financial Protection Bureau puts that shortfall at between $60 million and $90 million. Its complaint says some distributions to customers took more than eight months. The case ended in a stipulated judgment on 12 September 2025 with a $1 civil penalty, which allows the CFPB to compensate harmed consumers from its civil penalty fund.

No bank failed, so FDIC insurance never applied. Synapse mainly served consumer apps, but a business account built on the same structure carries the same exposure.

The FDIC’s proposed recordkeeping rule

The FDIC proposed a rule, published on 2 October 2024, that would require banks holding custodial accounts with transactional features to keep records of each beneficial owner and balance, reconcile those records at least daily, and have direct, continuous and unrestricted access to records kept by a third party, including if that third party goes bankrupt. The comment period closed on 16 January 2025. The most recent federal regulatory agenda lists the final rule as a long-term action, with its date “to be determined”.

Fintechbits analysis

Why fintechs are buying or becoming banks

Owning the bank removes a layer. There is one set of books, the deposits sit on the company’s own balance sheet, and there is no risk of a partner bank ending the relationship. Chime agreed on 8 September 2026 to buy its sponsor bank, Stride Bank, N.A., for $590 million in cash, with closing expected in the first half of 2027 pending OCC and Federal Reserve approval (our report).

Banks are also buying fintechs for their deposits. Valley National Bancorp agreed on 28 September 2026 to acquire Bluevine for about $340 million, bringing $2.1 billion of deposits and about 175,000 active small-business customers (our report). Axos Financial agreed in July 2026 to buy Arc Technologies, a cash management startup (our report). Where that cash goes once it leaves a deposit account is covered in our explainer on fintech treasury and cash management.

How it works in the UK and EU

In the UK and the EU, many fintech business accounts are provided by e-money institutions, which are not banks and do not take deposits. Instead of deposit insurance, they must safeguard customer funds by keeping them separate from their own money, in segregated accounts at banks or in secure, low-risk assets. The FCA tells consumers that if a non-bank payment provider fails, the money will not be protected by the Financial Services Compensation Scheme (FSCS). Customers are repaid from the safeguarded pool instead, which can take time and can fall short.

Deposits at banks are different. From 1 December 2025, the FSCS protects eligible deposits at PRA-authorised banks up to £120,000 per depositor, per institution, up from £85,000, and temporary high balances up to £1.4 million. Across the EU, national schemes guarantee €100,000 per depositor.

The FCA has also tightened safeguarding. Under policy statement PS25/12, from 7 May 2026 payment and e-money firms must check daily that the right amount is safeguarded, file monthly returns and have annual safeguarding audits (firms holding less than £100,000 of customer funds are exempt from the audit), and plan better for failure so that customers are repaid sooner. A fuller end-state regime modelled on the client money rules depends on changes to legislation and has no set date.

Questions about business deposits at fintechs

Is my money safe in a fintech business account?

In the US, the money is usually held at an FDIC-insured partner bank and is insured up to $250,000 against that bank’s failure, provided the records identify your business as the owner. It does not cover the fintech or its ledger provider failing, which was the risk exposed at Synapse.

What is a sponsor bank?

A sponsor bank is a licensed, FDIC-insured bank that holds the deposits and provides payment network access for a fintech that is not a bank.

Is a fintech business account FDIC insured?

The fintech is not insured, but deposits it places at an insured bank can be insured pass-through to each customer. That requires the funds to belong to the customers, the account to be titled as custodial, and records showing each owner and its share.

How can a business get more than $250,000 of FDIC coverage?

Through a deposit sweep network such as IntraFi’s ICS, which splits a balance into amounts below the insurance limit and places each with a different network bank. The coverage protects against bank failure only.

Are e-money accounts in the UK covered by the FSCS?

No. E-money institutions safeguard customer funds instead. The FSCS covers deposits at banks, up to £120,000.