FDIC Insurance Over $250K
for Business Accounts: 5 Methods
Five practical methods ranked by ease, cost, and yield trade-off. Pick the one that matches your treasury size, banking sophistication, and operational tolerance.
The five methods at a glance
Method 1: Fintech sweep account (the modern default)
Mercury, BlueVine, Relay, and Brex all bundle an IntraFi-style sweep with their business checking accounts at no separate fee. Open the account, deposit the full treasury balance, and the sweep happens automatically. The originating fintech earns its margin on the spread between gross yield at partner banks and what it pays the customer (or in Mercury's case, on the differential between the operating-cash account and the Treasury-fund Vault product).
Mercury Vault provides $5M FDIC coverage via Choice Financial Group plus IntraFi partner banks. No monthly fee. No checking APY (Mercury earns on the deposit). For yield, Mercury Treasury offers a money market mutual fund product paying ~4.5 percent currently, but that is not FDIC-insured.
BlueVine provides $3M FDIC coverage via Coastal Community Bank plus IntraFi partner banks, and pays 1.5 percent APY on the checking balance up to $3M (the only fintech of the four to pay APY directly on checking-balance). Materially better for businesses that want both insurance and yield.
Relay provides $3M FDIC coverage via Thread Bank plus IntraFi. No checking APY. Strongest for businesses using sub-accounts and QuickBooks Online. Brex Cash provides $6M via Brex Bank and a multi-partner programme, the highest in the category, but Brex's underwriting is tilted toward VC-backed startups and the account is not always available to bootstrapped small businesses.
Method 2: Traditional bank IntraFi ICS
For businesses that prefer to retain an existing bank relationship (often because of loan, line-of-credit, or treasury-management dependencies), IntraFi Cash Service can be added to an existing checking account at any of the 3,000+ IntraFi member banks. The originating community bank or regional bank keeps the customer relationship; IntraFi handles partner-bank allocation. Typical cost is 10 to 25 bps annually, paid as either an explicit sweep fee or an implicit spread.
For balances of $1 million to $50 million, this is the operational default at most community and regional banks. The customer keeps a single bank relationship for treasury management (Positive Pay, Reverse Positive Pay, ACH origination, lock-box, wire-room access) while gaining full FDIC coverage. The implicit cost (15 bps on $5M = $7,500/year) is modest relative to the operational savings of a single bank relationship.
Ask your existing bank's treasury team for an IntraFi ICS quote. If the answer is "we do not offer that", consider whether the bank is a competitive choice for treasury services overall. ICS is widely available enough that absence is a signal.
Method 3: CDARS for time deposits
For the portion of business cash that does not need to be liquid for 90 to 365 days, CDARS (the time-deposit version of IntraFi's network) lets a business hold up to $50M in laddered CDs, all FDIC-insured via partner-bank allocation. At the current rate environment, 6 to 12 month CDARS yields are 4.25 to 5.10 percent, materially above what FDIC-insured checking pays.
The decision is treasury-segmentation. A typical SMB treasury splits into three buckets: 1 to 3 months of operating cash (kept liquid in checking, sweep-insured); 3 to 6 months reserve (FDIC sweep or short-duration CDARS); 6+ months reserve (CDARS ladder or T-bill ladder). The yield difference between FDIC-insured operating checking (0 to 1.5 percent) and a 6-month CDARS (4.25 to 5.10 percent) on $1M of reserve cash is $27,500 to $36,000 per year, well worth structuring for.
Compare current CDARS-comparable rates at CDRateComparison.com before placing.
Method 4: Multiple bank accounts (the manual approach)
Open one business checking account at each of, say, eight banks. Each holds $250,000 or less. Total coverage is $2 million, fully insured. The direct dollar cost is the monthly fee at each bank (if any) and the operational cost of maintaining eight reconciliation feeds. For balances of $250K to $1M, this is sometimes operationally simpler than learning ICS; above $1M the operational overhead exceeds the sweep fee almost always.
The structural problem with manual multi-bank coverage is that it depends on the business maintaining each balance below $250K. As inflows accumulate, a single bank account can cross the cap before the next reconciliation, leaving an uninsured exposure window. Manual coverage requires daily monitoring; sweep networks make this automatic.
Method 5: Multiple ownership categories at one bank
FDIC insurance is per ownership category per bank. A business owner who operates multiple legal entities can hold $250,000 at the same bank in each entity's account, all separately insured. For example: a corporation, a separate LLC taxed as a partnership, the owner's personal single account, the owner's joint account with a spouse, and a revocable trust account. Each is in a distinct ownership category and each gets a $250,000 cap. Total coverage at one bank: $1,250,000 (or more, with multiple beneficiaries on the trust).
This works only if the multiple legal entities already exist for legitimate business reasons. Creating shell entities solely to multiply FDIC coverage is fraud and is excluded from coverage under 12 CFR 330.4. For an owner who legitimately operates, say, a holding LLC, two operating subsidiary LLCs taxed as corporations, and a personal account, this approach can stack coverage without sweeps.
Run the FDIC's EDIE calculator with each entity and the owner's personal accounts entered to confirm the per-category math. Especially important for single-member LLCs (which aggregate with the owner's single accounts unless taxed as a corporation, per 12 CFR 330.11).
Decision matrix
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Frequently Asked Questions
Can a business get more than $250,000 in FDIC coverage at one bank?
Yes, by either using a deposit sweep network that distributes the balance across multiple FDIC-member partner banks while presenting one account to the customer, or by maintaining accounts in multiple distinct ownership categories at the same bank (for example, a corporation and a separate partnership and a personal account, each getting a $250,000 cap). Sweep networks are the more common and operationally simpler approach for treasury balances.
What is the easiest way to insure $2 million in business cash?
Open a Mercury Business account ($5M Vault sweep) or BlueVine ($3M sweep) and the entire balance is automatically swept across IntraFi partner banks at no separate fee. For traditional bank preference, ask the existing bank whether it offers IntraFi ICS, which provides the same protection through the same network with a typical 10 to 25 bp explicit fee.
Can I just open accounts at multiple banks?
Yes, and this works, but it scales poorly. Eight separate bank relationships means eight account-opening packets, eight sets of online banking credentials, eight reconciliation feeds in QuickBooks, and eight bank-statement audits at year-end. The operational cost typically exceeds the 10 to 25 bp sweep fee within the first $1 million of treasury balances. Sweep networks were designed precisely to solve this scaling problem.
What about Treasury bills instead of FDIC insurance?
Treasury bills are backed by the full faith and credit of the US government, which is functionally a stronger guarantee than FDIC insurance for amounts above any single FDIC fund or congressional appropriation. T-bills are typically held through a brokerage account (not FDIC-insured at the brokerage; SIPC-protected for custody risk only) or directly at TreasuryDirect. They yield slightly more than FDIC-insured sweep cash at most points in the rate cycle. The trade-off: T-bills are not a checking account. They cannot be ACH-debited for payroll, wired for vendor payments, or used for operating cash. For the operating-cash portion of a treasury, FDIC sweeps remain the right tool; for the reserve portion (6+ months of cash that does not move), T-bills laddered through TreasuryDirect or a brokerage are competitive.
Does the $250,000 limit apply per account or per bank?
Per bank, per ownership category. Opening five separate checking accounts at the same bank in the same ownership category does not multiply coverage; all five aggregate to a single $250,000 cap. The way to multiply coverage at one bank is to use different ownership categories (a corporation, a separate LLC taxed as a partnership, the owner's personal single account, and so on) or to use a sweep network that distributes across many banks.
What is the maximum FDIC coverage a single business can theoretically have?
Effectively unlimited through IntraFi's network of 3,000+ partner banks at $250,000 each (over $750 million theoretical maximum), though the practical placement ceiling for any given customer depends on the IntraFi capacity and the originating bank's relationship. For most business customers, the relevant ceilings are the published programme limits at fintech business accounts ($3M to $6M) or the traditional-bank ICS limits, which typically operate to $50 million or more without difficulty.