What Is a Sweep Account? Types, Benefits and How Sweep Programs Work

By Markets & Investing DeskUpdated Nov 10, 2026

Definition

A sweep account automatically moves cash above a preset balance from a primary account into an interest-earning vehicle, then moves it back when the primary account needs funds.

Key takeaways

A sweep account moves excess cash out of a low- or no-interest account into a higher-yielding vehicle, usually once each business day.
The rules rest on a threshold or target balance. Cash above it is swept out, and cash is swept back in when the balance falls below it.
Brokerages use sweeps to hold uninvested cash, such as dividends and sale proceeds, until it is invested or used to settle orders.
Businesses use sweeps to earn on reserves, or to pay down a line of credit, while keeping enough in checking for daily expenses.
Fees, the yield the program pays, and the type of protection behind the sweep vehicle all decide whether the arrangement is worth it.

A sweep account is a bank or brokerage account that automatically moves money between a primary cash account and a separate holding vehicle based on preset balance rules. Usually the holding vehicle is a money market fund, a money market deposit account or interest-bearing deposits at partner banks. At the end of each business day, cash above a set threshold is transferred out (“swept”) into the vehicle. Cash comes back when the primary account needs it. The aim is to keep idle cash earning interest while it stays available for payments, trades or withdrawals.

How a Sweep Account Works

A sweep arrangement links two accounts and gives the institution standing instructions. Three settings define it:

The threshold or target balance. This is the amount the primary account should hold after each sweep. Some programs use one target. Others use an upper and a lower limit, and transfers start only when a limit is crossed.
The direction of the transfer. A sweep out moves money from the primary account into the sweep vehicle. A sweep in moves money back from the vehicle into the primary account, typically to cover checks, debits or a purchase. Brokerage statements often label these lines “sweep in” and “sweep out” to show which way the cash moved.
The timing. Sweeps are generally processed at the end of the business day. Money moving out of checking usually follows that daily schedule. Money coming back from some vehicles can take longer, depending on the institution and the product.

The process needs no action from the account holder once it is set up. That is the main appeal: cash does not sit idle because someone forgot to move it.

Common sweep vehicles

The vehicle determines the yield, how fast money returns and what protects it:

Money market mutual funds, which invest in short-term debt and aim for liquidity.
Bank deposit sweep programs, in which a brokerage places cash in deposit accounts at one or more partner banks.
Money market deposit accounts or high-interest savings accounts at the same bank.
Short-term certificates of deposit with maturities such as 30, 60 or 90 days, used when the owner knows the cash will not be needed for a set period.

Example of a Sweep Account

Hypothetical example for illustration only; the figures are not any institution’s terms.

A small business sets a $50,000 target balance in its operating checking account, with excess cash swept into a money market fund.

Monday: customer payments push the end-of-day balance to $72,000. The sweep moves $22,000 out to the fund, which leaves checking at $50,000.
Tuesday: a $35,000 payroll clears and checking drops to $15,000. The sweep moves $35,000 in from the fund to bring checking back to $50,000, provided the fund holds at least that much.

If the fund paid a hypothetical 4% annual yield, $22,000 held there for one day would earn about $22,000 × 0.04 ÷ 365 ≈ $2.41 before fees. Across a year of fluctuating balances, those small daily amounts add up. Any program fee is subtracted from that figure.

Types of Sweep Programs

Brokerage (personal) sweeps

In a brokerage or retirement account, the sweep is where uninvested cash sits: deposits, dividends, interest and proceeds from sales. The cash stays in the sweep vehicle until the investor chooses an investment or the broker uses it to settle an open order. Many brokerages offer either a bank deposit sweep or a money market fund sweep, and some let the customer choose between them.

Business sweeps

Companies with large or uneven cash flows set a checking minimum and sweep anything above it into an interest-bearing vehicle. If the balance drops below the minimum, money flows back. A variant is the credit sweep: excess cash goes toward an outstanding line of credit instead of an investment, which cuts interest expense. When the company needs cash again, it can draw on the line.

Bank reserve sweeps

Some sweeps run inside the bank and are invisible to the customer. Under retail sweep programs, a bank’s systems reviewed how customers used checkable deposits and reclassified balances into money market deposit accounts. This lowered the bank’s required reserves, because those accounts carried different reserve treatment than checking.

Why Sweep Accounts Exist

Sweeps grew out of U.S. banking regulation. Regulation Q prohibited banks from paying interest on demand deposits, so business checking accounts could not earn interest directly. Moving cash each night into an instrument that could pay interest got around the restriction. The Federal Reserve repealed that prohibition in 2011, and banks may now pay interest on business checking. Some do, especially on balances above a certain amount. Sweeps remain in use because they automate cash placement and can reach vehicles that pay more than the checking account.

Limitations of a Sweep Account

Fees. Some institutions charge a flat monthly fee. Others keep a share of the yield. Either can erase the benefit on smaller balances.
The sweep yield may not be the best available. The rate a program pays is set by the institution. It can be lower than a money market fund or savings account the customer could choose separately, so the default sweep is worth comparing against alternatives.
Different protection. Bank deposit sweeps are generally covered by FDIC insurance up to $250,000 per depositor, per insured bank, per ownership category. Coverage depends on how the cash is spread across partner banks and on what else the customer holds at those banks. Money market funds are securities, not deposits. They carry no FDIC insurance, and their value is not guaranteed. At a brokerage, SIPC protection covers customer assets if the firm fails, not losses in value.
Timing gaps. Transfers back to checking may not be instant, so a payment can depend on when the sweep-in posts.

Sweep Accounts vs. Similar Arrangements

Sweep vs. non-sweep account: a non-sweep account keeps all cash where it is deposited, and the owner moves money by hand. A sweep account moves it automatically by rule.
Sweep vs. overdraft transfer: an overdraft transfer pulls money from a linked account only to cover a shortfall. A sweep also pushes surplus cash out to earn interest.
Sweep vs. money market account: a money market account is a destination. A sweep is the mechanism that moves cash into and out of a destination such as that account.

FAQs

What does total sweep balance mean?

It is the amount currently held in the sweep vehicle, as opposed to cash in the primary account or money already invested in other holdings. On a brokerage statement, it shows how much uninvested cash is parked in the bank deposit program or money market fund.

Is a sweep account a savings account?

Not necessarily. "Sweep" describes the automatic transfer, not the account type. Depending on the program, the destination can be a savings or money market deposit account, a bank deposit program or a money market mutual fund. The program documents state which one holds the cash.

The Bottom Line

Sweep accounts matter to businesses with uneven cash flows and to investors holding uninvested cash at a brokerage. Because the institution sets the sweep yield and fees, the default program can pay less than options chosen separately. Before relying on a sweep, check the fee, compare the rate, and confirm whether the vehicle carries FDIC insurance or is a money market fund with no guarantee.