Cash sweep activity is the automatic movement of uninvested cash in your brokerage account into an interest-bearing vehicle, usually a bank deposit account or a money market fund, so the money earns a return instead of sitting idle. The sweep runs on its own every business day, and cash comes back whenever you need it for a trade or withdrawal. What you earn, how the money is insured, and how it gets taxed all depend on which vehicle your firm uses, and the differences are large enough to matter.
How the Daily Sweep Works
When you open a brokerage account, the firm typically asks you to pick a cash sweep program for any uninvested cash. Most firms have a default, often a bank sweep, and enroll you in it automatically if you do not choose something else.1U.S. Securities and Exchange Commission. Cash Sweep Programs for Uninvested Cash in Your Investment Accounts – Investor Bulletin Once enrolled, the system checks your settlement account balance, often using a threshold as low as one dollar, and moves anything above that amount into the designated interest-bearing vehicle.
The transfer out of your settlement account is called a sweep out. When your account needs cash to settle a purchase or cover a withdrawal, a sweep in pulls money back. You don’t initiate any of this. The back-and-forth runs every business day, so your cash is either earning a return or available to fund a transaction.
Where Your Swept Cash Goes
Swept balances land in one of two main vehicles, and which one your firm uses affects both your yield and your insurance.
Bank Sweep Programs
In a bank sweep, your uninvested cash moves into deposit accounts at partner banks. Those banks may be affiliates of the brokerage or unrelated third parties.1U.S. Securities and Exchange Commission. Cash Sweep Programs for Uninvested Cash in Your Investment Accounts – Investor Bulletin The cash earns interest at a variable rate set by the program, and you can retrieve it any time for trades or withdrawals. Many programs use a network of banks and spread your balance across several institutions, which can increase the total FDIC coverage available to you.
Money Market Fund Sweeps
The other common destination is a money market mutual fund. Instead of depositing your cash at a bank, the brokerage uses it to buy shares in a fund that holds short-term, low-risk debt such as Treasury bills, government agency securities, or high-quality commercial paper. Money market funds aim to keep a stable share price of one dollar, but that value is not guaranteed.
There are two main flavors. Government money market funds invest almost exclusively in U.S. government securities and carry the lower risk. Prime money market funds invest in short-term corporate and bank debt, which adds some credit risk but often pays a higher yield. Your firm’s sweep disclosure specifies which type of fund is used.
Why Sweep Yields Vary So Much
Not all sweep programs pay the same rate, and the gap can be dramatic. Some brokerages pay yields that closely track the federal funds rate. Others pay a fraction of a percent even when short-term market rates are several points higher. On a balance of $50,000, the difference between a high-paying and low-paying sweep can easily exceed $2,000 a year.
The reason is simple. Brokerages often profit from the spread between what their partner banks pay on deposits and what the brokerage passes along to you. A firm might receive a competitive overnight rate from a partner bank and credit your account with only a small fraction of it. The difference is revenue for the firm. Some bank sweep programs also charge account maintenance fees, asset-based fees, or transaction fees.1U.S. Securities and Exchange Commission. Cash Sweep Programs for Uninvested Cash in Your Investment Accounts – Investor Bulletin
Money market fund sweeps disclose their costs as a fund expense ratio and generally pass the remaining yield through to shareholders. When short-term rates are high, money market fund sweeps often pay noticeably more than bank sweeps at the same firm. Comparing the APY or seven-day yield across your available options is the simplest way to see whether you are leaving money on the table.
Because brokerages can earn significant revenue on swept cash, regulators treat these programs as a potential conflict of interest. The SEC requires broker-dealers to disclose all material facts about conflicts tied to a recommendation, and it specifically names cash sweep programs as an example of a conflict that must be addressed.2U.S. Securities and Exchange Commission. Staff Bulletin: Standards of Conduct for Broker-Dealers and Investment Advisers Conflicts of Interest Under Regulation Best Interest, broker-dealers must also consider the total cost of an account recommendation, including indirect costs from cash sweep programs, and have a reasonable basis to believe the recommendation is in the client’s best interest.3U.S. Securities and Exchange Commission. Staff Bulletin: Standards of Conduct for Broker-Dealers and Investment Advisers Account Recommendations for Retail Investors Investment advisers have a similar fiduciary duty to either eliminate the conflict or disclose it clearly enough that clients can consent to it.
How Swept Cash Is Insured
The protection covering your swept cash depends entirely on where the money is sitting at that moment. Cash in a brokerage account and cash in a partner bank fall under different frameworks, and they do not overlap.
SIPC at the Brokerage
Cash held in your brokerage’s settlement account, before it is swept out or after it is swept back in, falls under the Securities Investor Protection Corporation. If your brokerage firm becomes insolvent, SIPC protects your assets up to $500,000 total, with a $250,000 limit on cash claims.4Office of the Law Revision Counsel. Title 15 – Commerce and Trade, Chapter 2B-1 – Securities Investor Protection SIPC does not protect against investment losses; it steps in only if the firm fails and your assets go missing.
FDIC at Partner Banks
Once your cash is swept into a deposit account at a partner bank, SIPC no longer covers it. The Federal Deposit Insurance Corporation insures those deposits up to $250,000 per depositor, per insured bank, for each account ownership category.5Office of the Law Revision Counsel. 12 U.S.C. Chapter 16 – Federal Deposit Insurance Corporation Many sweep programs spread cash across a network of partner banks so that no single bank holds more than $250,000 of your money, which can extend FDIC coverage well past the single-bank limit.
Pass-Through Coverage and Its Conditions
Because your brokerage, not you, deposits the money at the partner bank, FDIC coverage only reaches you through what is called pass-through insurance. Three conditions must be met. The funds must actually be owned by you and not by the brokerage placing them. The bank’s records must show the account is held in a custodial or agency capacity (for example, “XYZ Brokerage FBO Customers”). And either the bank’s or the brokerage’s records must identify you as the owner and show your share of the deposit.6FDIC. Pass-through Deposit Insurance Coverage If any of these conditions is not satisfied, the FDIC would treat the entire deposit as belonging to the brokerage, and your funds could end up uninsured. Reputable sweep programs are designed to meet all three, but it is worth reviewing your firm’s disclosure to confirm.
Money Market Fund Sweeps Are Not Insured
If your sweep vehicle is a money market fund rather than a bank deposit, neither FDIC nor SIPC protects the value of those fund shares against loss. Money market funds are securities, not deposits. They are generally considered low-risk, but they can lose value, as happened during the 2008 financial crisis when a major fund’s share price fell below one dollar. Your brokerage account itself is still a SIPC member, so if the brokerage fails, SIPC would help return the fund shares in your account. It would not make up for any decline in share price.
How Sweep Income Is Taxed
Sweep earnings are taxable income in the year you receive them. The tax form you get depends on the sweep vehicle.
- Bank sweep programs generate interest, reported on Form 1099-INT. Your brokerage or the partner bank will issue this form if you earn at least $10 in interest during the year.7Internal Revenue Service. Instructions for Forms 1099-INT and 1099-OID
- Money market fund sweeps generate dividends, not interest, and are reported on Form 1099-DIV in Box 1a (total ordinary dividends). The IRS specifically notes that dividends from money market funds should not be confused with interest from bank money market accounts.8Internal Revenue Service. Instructions for Form 1099-DIV9Internal Revenue Service. Publication 550, Investment Income and Expenses
Either way, sweep income is generally taxed as ordinary income at your marginal federal rate. Some firms offer municipal money market fund sweeps that invest in short-term municipal securities. Income from these funds may be exempt from federal income tax, and sometimes state tax depending on the underlying holdings, but yields on municipal funds tend to be lower than taxable alternatives. Whether the tax benefit outweighs the lower yield depends on your bracket.
What to Look For on Your Statement and Disclosures
Your monthly brokerage statement will show specific line items for each sweep movement. Look for entries labeled “sweep out” (cash transferred to the interest-bearing vehicle) and “sweep in” (cash pulled back for a trade or withdrawal). A net cash balance entry shows the total held in the sweep program, and the statement should reflect how much interest or dividend income the swept cash earned during the period.
Your firm must also provide a written sweep program disclosure. This document identifies the participating banks or funds, describes how the interest rate is set, lists any fees, and explains the priority order in which banks receive deposits. The brokerage must give you 30 days’ written notice before changing the terms, conditions, or products available in the sweep program.1U.S. Securities and Exchange Commission. Cash Sweep Programs for Uninvested Cash in Your Investment Accounts – Investor Bulletin If you use an investment adviser, the adviser’s Form ADV brochure should also describe how the cash sweep arrangement works.
Changing Your Sweep Option
Being enrolled in your firm’s default sweep does not lock you in. You can move your uninvested cash to a different option at any time.10FINRA. Don’t Lose Interest: Managing Cash in Your Brokerage Account Typical alternatives include switching from a bank sweep to a money market fund sweep or the reverse, buying short-term Treasury bills directly, or moving idle cash to a high-yield savings account at an outside bank.
When comparing options, three factors do most of the work:
- Yield. Compare the APY or seven-day yield of your current sweep to other available vehicles. Small differences compound quickly on larger balances.
- Insurance type. Bank sweeps offer FDIC coverage; money market fund sweeps do not. If deposit insurance matters to you, check how many partner banks are in the network and whether your total balance stays under $250,000 at each one.
- Liquidity. Most sweep vehicles allow same-day access to your cash for trades, but buying Treasury bills or moving money to an external bank can add a day or more.
To see what you are currently earning and what alternatives your firm offers, check your account agreement, review your most recent statement, or contact your financial professional.