Sweep Account
A bank account that automatically transfers excess funds into an interest-bearing investment at the end of each business day, maximizing returns on idle cash.
A sweep account is a bank or brokerage account feature that automatically moves ('sweeps') excess cash balances above a predefined threshold into a higher-yielding investment vehicle at the end of each business day, then sweeps funds back as needed to cover transactions. It ensures idle cash doesn't sit in non-interest-bearing accounts while maintaining full liquidity.
For businesses, sweep accounts typically move excess operating account balances into overnight money market funds, Treasury bills, or interest-bearing bank products. The sweep happens automatically without manual intervention — the treasurer sets the target balance, and the bank handles daily sweeps algorithmically.
For example, a company might set its operating account target at $500,000. If the balance closes at $800,000, the bank automatically sweeps $300,000 into an overnight money market fund. The next morning, if $400,000 is needed for payroll, $400,000 is swept back. At today's interest rates, this can generate meaningful yield on cash that would otherwise earn nothing.
Sweep structures also provide FDIC coverage optimization. Standard FDIC coverage is $250,000 per depositor per institution. Through insured cash sweep (ICS) programs — offered by networks like IntraFi — deposits are broken into $250,000 chunks and distributed across multiple member banks, allowing millions in FDIC-insured cash management at a single institution interface.
For high-growth companies with large cash balances from recent funding rounds, sweep accounts are a simple, zero-risk way to earn meaningful treasury yield while maintaining operational liquidity. Modern treasury platforms like Treasure Financial, Meow, and Arc integrate automated sweep programs directly into their products.
FAQs
Are sweep account funds FDIC insured?
It depends on the sweep destination. If swept into money market mutual funds, FDIC does not apply (these are securities, not deposits). If swept into deposit accounts at network banks through programs like ICS or CDARS, they can be FDIC insured up to $250,000 per bank × the number of participating banks. Always verify the sweep destination and insurance coverage.
What is an insured cash sweep (ICS) program?
An ICS program (offered through networks like IntraFi) allows businesses to deposit large sums at a single institution while receiving FDIC insurance across the full balance. The network bank breaks the deposit into $250,000 chunks and distributes them across member banks — the business manages everything through one account and gets one consolidated statement.
How much interest do sweep accounts typically earn?
Sweep yields vary with market rates. In low-rate environments (2009–2021), sweeps earned near 0%. In the 2022–2024 rising-rate environment, overnight money market sweep rates reached 4.5–5.5% annually, making idle cash management highly consequential. Large companies can earn millions annually by optimizing cash sweeps.
Related Terms
Operating Account
The primary business bank account used for daily operational transactions including payroll, vendor payments, and customer receipts.
Treasury Management
The organizational function responsible for managing a company's liquidity, cash flow, investments, debt, and financial risk.
Float
The time gap between when a payment is initiated and when funds are actually debited or credited, creating a temporary balance discrepancy.
ACH Transfer
An electronic bank-to-bank transfer processed through the Automated Clearing House network, used for payroll, bill payments, and business transactions.
