A CMA account is a single account that combines checking, savings, and investment features in one place

CMA stands for Cash Management Account. It is a hybrid account offered by brokerages and investment firms that lets you hold cash, write checks, earn interest, and invest in stocks or bonds without moving money between separate accounts. The account sweeps your cash into money market funds or short-term securities automatically, so idle money earns interest instead of sitting flat.

The appeal is operational simplicity: one login, one statement, one place to manage spending and investing. You get a debit card or checkbook tied to the same account where your investments live. When you need cash for an expense, it comes from the same pool. When you have cash sitting idle, it moves into an interest-bearing vehicle without you having to do anything.

CMAs became common in the 1980s as a way for brokerages to compete with banks. They have evolved since then, but the core idea remains: treat cash and investments as one account rather than forcing customers to maintain a checking account at a bank and a brokerage account elsewhere.

Key Takeaways

  • A CMA account combines checking, savings, and brokerage features so you can write checks, earn interest on cash, and invest in securities from one account.
  • Cash in the account automatically moves into money market funds or short-term bonds to earn interest, a process called a sweep.
  • CMAs are offered by brokerages and investment firms, not traditional banks, and typically require a minimum balance to open.
  • You pay no monthly fee at most firms, but you may pay transaction fees for certain trades or services, and interest rates on cash vary by firm and market conditions.
  • A CMA is useful if you invest regularly and want to avoid moving money between a bank account and a brokerage, but it is not FDIC-insured the way a bank checking account is.

How the automatic sweep works

The sweep is the engine of a CMA. At the end of each business day, the firm looks at your cash balance—money you have not invested or spent. Any amount above a threshold (often zero, sometimes a few hundred dollars) automatically moves into a money market fund or short-term bond fund. You earn the interest or yield that fund generates.

When you write a check or make a debit card purchase, the firm pulls money back from the sweep fund to cover it. You do not have to do anything. The sweep happens automatically every night. The interest rate you earn depends on which fund the firm sweeps into and what that fund's yield is at the moment. During periods of high interest rates, the yield is higher. During low-rate periods, it is lower.

Different firms sweep into different vehicles. Fidelity sweeps into a Fidelity money market fund. Charles Schwab sweeps into its own money market fund or, for some account types, into a network of partner banks. The fund you sweep into affects the interest rate you earn, so it is worth checking which fund your firm uses before you open an account.

Who offers CMA accounts and what they cost

Major brokerages offer CMAs under different names. Fidelity calls theirs a Cash Management Account. Charles Schwab calls theirs a Schwab Bank Investor Checking account. Merrill Edge offers a similar product. E*TRADE and TD Ameritrade (now part of Charles Schwab) have versions as well. Each firm structures the account slightly differently, but the core mechanics are the same.

Most CMAs have no monthly fee. Some firms waive the fee if you maintain a minimum balance—often $25,000 or $50,000—or if you have a certain account type. A few charge a small monthly fee if your balance falls below the minimum. Check the fee schedule on the firm's website for the exact terms.

You may pay transaction fees for certain trades, wire transfers, or other services, but these are separate from the account fee. Interest rates on the sweep fund vary by firm and change with market conditions. During 2023 and 2024, when the Federal Reserve kept interest rates high, CMA yields were competitive with high-yield savings accounts. As rates fall, those yields fall too.

CMA accounts versus bank checking accounts

A CMA is not a bank account. It is a brokerage account that includes checking features. The difference matters for protection. Bank checking accounts are insured by the FDIC up to $250,000 per depositor per bank. CMA accounts are not FDIC-insured. Instead, they are protected by SIPC (Securities Investor Protection Corporation), which covers up to $500,000 per customer per firm, but only for securities and cash held for investment purposes.

In practice, most large brokerages also carry additional insurance or sweep cash into partner banks that are FDIC-insured, so your money is protected even if the brokerage fails. Fidelity, for example, sweeps cash into a network of FDIC-insured banks. But the protection is not automatic—it depends on the firm's structure. If FDIC protection is important to you, ask the firm directly how cash in the account is protected.

A CMA also does not come with all the services a bank offers. You cannot get a mortgage, a car loan, or a credit card through your CMA provider (though the parent company may offer these separately). If you need traditional banking services, you will still need a bank account alongside the CMA.

When a CMA makes sense

A CMA is most useful if you invest regularly and want to avoid the friction of moving money between accounts. If you buy stocks or funds every month and also need to pay bills from the same pool of money, a CMA keeps everything in one place. You see your cash balance and your investments on one statement. You do not have to transfer money from a bank to a brokerage before you invest.

A CMA also makes sense if you want your idle cash to earn interest without the effort of moving it to a separate savings account. The sweep happens automatically, so you earn yield on cash you are not when ready using without having to think about it.

A CMA is less useful if you do not invest or if you prefer to keep your checking and investing completely separate. If you rarely buy securities, the added features of a CMA do not benefit you, and a regular bank checking account is simpler. If you want the strongest possible protection for your cash, a bank account with FDIC insurance is more straightforward than relying on a brokerage's insurance structure.

Minimum balances and account requirements

Most CMAs have a minimum balance to open, typically $1,000 to $25,000 depending on the firm. Some firms waive the minimum if you set up automatic deposits or maintain a certain account type. A few firms have no minimum at all. Check the firm's website for current requirements, as these change.

Some firms also require you to have an existing brokerage account or to agree to certain terms before you can open a CMA. For example, you may need to open a regular investment account first, then add the CMA feature. Others let you open a CMA as your first account with the firm.

Frequently Asked Questions

Can I use a CMA account like a regular checking account?

Yes. You get a debit card and checkbook, and you can pay bills and make purchases just like a bank checking account. The difference is that idle cash earns interest automatically, and you have access to investing features in the same account.

What happens to my money if the brokerage fails?

It depends on the firm's structure. Most large brokerages carry SIPC insurance and additional coverage through partner banks. Fidelity, for example, sweeps cash into FDIC-insured banks. Ask your firm directly how cash in the account is protected before you open one.

Do I earn interest on all the cash in my CMA?

Yes, but only on cash that is swept into the money market fund or bond fund. Cash you hold for a pending transaction or that sits below the sweep threshold may not earn interest. The sweep typically happens daily, so most of your idle cash earns interest.

Can I write checks from a CMA account?

Yes. Most CMAs come with a checkbook or debit card. When you write a check or use the debit card, the firm pulls money from the sweep fund to cover it. The process is the same as a bank checking account.

Is a CMA better than a high-yield savings account for holding cash?

It depends on your needs. A CMA's sweep rate is often competitive with high-yield savings accounts, and you get the added benefit of investing in the same account. But a high-yield savings account is simpler if you only want to hold cash and do not invest. A high-yield savings account is also FDIC-insured, which is more straightforward than a brokerage's insurance structure.