Cash Management Account (CMA)

A cash management account is a brokerage account marketed as a substitute for a bank account. It holds securities like any other brokerage account, adds check writing, a debit card, bill payment and direct deposit, and runs a program that automatically moves uninvested cash somewhere it earns interest or dividends. The label is a product name, and the rules attach to the parts rather than to the label. Where the provider is a broker-dealer, the account is a securities account and the holder is a customer of that firm. Cash sitting at the firm is a free credit balance, defined at 17 CFR 240.15c3-3(a)(8) as a liability of the broker or dealer to customers subject to immediate cash payment on demand. The mechanism that moves it is a Sweep Program, defined at 15c3-3(a)(17) as a service offering the customer the option to automatically transfer free credit balances to either a money market mutual fund or an account at a bank whose deposits are insured by the FDIC.

Three neighbors are worth naming, because the differences are the whole subject. A checking account is a bank deposit and the deposit rules apply to it directly. A brokerage account is the securities account underneath a cash management account, without the payment features bolted on. A sweep account is the destination the program moves the cash into, and it is the destination rather than the label that decides what protects the money. A cash management account is the brokerage account dressed to behave like the checking account, and the useful question about any particular one is which entity actually holds it.

Start with what the account is actually holding, because there are three answers and they are not interchangeable. Cash left at the firm is a free credit balance, an amount the broker-dealer owes the customer. Cash swept to a program bank is a bank deposit, owned by the customer and held in the bank's records through the firm. Cash swept to a money market fund is a security: the customer owns fund shares, and no deposit insurance touches them. The account statement usually presents all three as one cash number, which is exactly why the distinction goes unnoticed until it matters.

Pass-through insurance is the mechanism behind the FDIC coverage these accounts advertise, and it is conditional. Under 12 CFR 330.7(a), funds owned by a principal and deposited in the name of an agent, custodian or nominee are insured to the same extent as if deposited in the name of the principal. The FDIC sets out three requirements for that treatment: a relationship providing a basis for pass-through coverage is expressly disclosed in the bank's deposit account records; the identity and ownership interest of each owner is ascertainable from the bank's records or from records the third party maintains; and the underlying owners, rather than the third party, actually own the funds. The FDIC states plainly that it determines whether those requirements are satisfied at the time an insured bank fails, which means no amount of checking today produces a confirmation.

The aggregation rule is the part most likely to cost a reader money, and it is stated in the FDIC's own consumer brochure. Deposits insured on a pass-through basis are added to any other deposits the owner holds in the same ownership category at the same bank for purposes of the deposit insurance limit. Deposit insurance is $250,000 per depositor, per insured bank, per ownership category, and a sweep does not create a new category. So if the program places money at a bank where the customer already holds a savings account in their own name, the two balances are one balance for coverage purposes. The brokerage's allocation software has no way of seeing accounts held elsewhere.

Spreading cash across program banks genuinely multiplies coverage, within that constraint. The SEC's investor bulletin on cash sweep programs notes that some firms use several FDIC-insured banks, which "may allow you to have FDIC insurance on deposits larger than $250,000 by spreading the money across multiple FDIC-insured banks." The SEC's earlier bulletin on bank sweep programs is blunt about where the work sits: "most broker-dealers place the responsibility on you to monitor your cash level so that you do not lose FDIC insurance coverage." Two practical consequences follow. The program's bank list belongs to the disclosure document, not to the marketing page, and whether a customer can exclude a particular bank from their own allocation is a question for the account agreement. And "a different bank" means a different charter rather than a different brand, so a list of familiar names is not automatically a list of separate coverage limits.

The protection can change while the account is open. Under 17 CFR 240.15c3-3(j)(2)(ii), a broker-dealer may sweep free credit balances only on stated conditions. For an account opened since that provision took effect, the customer must give prior written affirmative consent after being told the general terms of the products available and that the firm may change them. For any account, the firm must give at least 30 calendar days' written notice before changing the terms of the sweep program, changing, adding or deleting the products available through it, or moving the customer from one product to another. That notice must describe the new terms and the customer's options. Read in the other direction, the same rule says that the thing protecting the cash is not permanent: a firm can move a default sweep from a money market fund to bank deposits, or the reverse, on a month's notice, and the applicable protection changes with it.

What the account is not. It is not a bank, and the deposit rules reach only the swept deposits, only while they sit at the bank. The payment features run through the broker-dealer and its banking partners, so the terms governing a returned payment, a card dispute or a hold on a deposited check come from the account agreement and from the rules applying to whichever institution processes them, not automatically from the ones a reader may associate with a checking account at their own bank.

The customer opens the account with the provider, consents to the sweep program, and funds it. Uninvested money is swept, usually daily, to the program's default destination. Payments leave by card, check, bill payment or transfer, and the program pulls cash back from the sweep destination to cover them. The statement shows one cash figure; the disclosure document shows which destination that figure is sitting in and which banks are on the program list.

A hypothetical example of how the aggregation rule bites. Priya holds $700,000 of uninvested cash in a cash management account whose sweep places deposits at program banks. This program caps each bank at $245,000, a buffer chosen so accrued interest cannot push a balance over the insurance limit before the next sweep. The program allocates $245,000 to Bank A, $245,000 to Bank B, and the remaining $210,000 to Bank C ($245,000 + $245,000 + $210,000 = $700,000). Each balance sits under $250,000, so on the face of it every dollar is covered.

Priya also holds a $90,000 savings account in her own name, opened years ago, at Bank B. Her deposits at Bank B in the single ownership category are therefore $335,000 ($245,000 + $90,000), which is $85,000 above the $250,000 limit ($335,000 − $250,000). That $85,000 is uninsured, and nothing on her brokerage statement says so, because the brokerage cannot see the savings account. Only Priya holds both halves of that picture, which is why the check has to be hers rather than the program's.

Pros

• Payment features and investing sit in one account, so cash does not have to be moved between institutions before it can be spent or invested.
• A sweep across several program banks can carry deposit insurance well beyond $250,000 without opening accounts at each bank yourself.
• Uninvested cash is put to work by default rather than sitting idle, which is the difference between a sweep and a plain free credit balance.
• Where the provider is a broker-dealer, the securities rules require written notice before the sweep destination is changed, so the protection cannot be switched silently.

Cons

• Coverage of swept deposits depends on pass-through requirements the customer cannot verify, and the FDIC decides whether they were met only after a bank has failed.
• Swept deposits combine with deposits you already hold at the same bank in the same ownership category, and the allocation is blind to accounts held outside the firm.
• Monitoring the resulting coverage falls on the customer, by the SEC investor bulletin's own description of how these programs are run.
• Cash swept to a money market fund is a security rather than a deposit, so it carries no deposit insurance at all and can lose value.
• One cash figure on a statement can be sitting in any of three legal states, which makes the account harder to reason about than either a bank account or a plain brokerage account.