A money market account is a hybrid between a savings account and a checking account, with interest rates that move based on what the Federal Reserve does
A money market account (MMA) is a deposit account offered by banks and credit unions. It combines features of both savings and checking: you earn interest on your balance (like savings), but you can write checks and use a debit card to withdraw money (like checking). The interest rate is variable, meaning it changes when the Fed raises or lowers its benchmark rate, usually moving within weeks or months of a Fed decision.
The trade-off is that money market accounts come with withdrawal limits. Federal rules once capped withdrawals at six per month, but that rule was suspended in 2020 and has not been reinstated. However, individual banks can still impose their own limits—typically three to six withdrawals per month before they charge a fee or convert your account to savings. The minimum balance to open one ranges from $500 to $25,000 depending on the bank.
Key Takeaways
- Money market accounts pay variable interest that rises and falls with Federal Reserve rate changes, so your earnings shift every few months.
- You can write checks and use a debit card, but most banks limit you to three to six withdrawals per month before charging a fee.
- Minimum opening balances are usually $500 to $25,000, and some banks waive the minimum if you set up automatic deposits.
- Your deposits are insured up to $250,000 by the FDIC (at banks) or NCUA (at credit unions), the same as a regular savings account.
- Money market accounts pay more interest than savings accounts but less than certificates of deposit (CDs) because your money stays accessible.
How the interest rate works and when it changes
The interest rate on a money market account is set by the bank, not by you. Banks base their rates on the federal funds rate—the interest rate the Federal Reserve charges banks to lend to each other overnight. When the Fed raises its rate, banks typically raise money market rates within days or weeks. When the Fed cuts rates, banks usually follow within a similar timeframe.
The rate you see advertised is called the Annual Percentage Yield (APY). This is the total interest you will earn in a year, expressed as a percentage. If a bank advertises 4.50% APY and you keep $10,000 in the account for a full year without touching it, you will earn $450. Interest compounds daily or monthly depending on the bank, meaning you earn interest on your interest.
Because rates are variable, the APY you lock in today will not be the same three months from now. If rates fall, your earnings drop. If rates rise, your earnings increase. This is different from a CD, where the rate is fixed for the entire term.
Withdrawal limits and how they affect your money
Most banks allow you to make three to six withdrawals per month from a money market account before charging a fee (usually $10 to $25 per excess withdrawal). Some banks count only certain types of withdrawals—for example, checks and debit card transfers might count, but ATM withdrawals might not. Read your account agreement to know which transactions count toward the limit.
If you hit the limit, the bank will either charge a fee for each additional withdrawal or close the account and move your money to a regular savings account. A few banks do not enforce withdrawal limits at all, but they are rare and usually offer lower interest rates to compensate.
This limit exists because banks use money market deposits to fund loans and investments. If too many customers withdraw at once, the bank needs to have enough cash on hand. The limit protects the bank's liquidity, not your money.
Minimum balance requirements and how to avoid fees
Most banks require a minimum opening balance of $1,000 to $10,000 to open a money market account. Some require $25,000 or more. If your balance falls below the minimum at any point, the bank will charge a monthly fee (typically $10 to $25) until you bring it back up, or they will close the account.
A few banks waive the minimum balance requirement if you set up automatic monthly deposits of a certain amount—often $25 to $500 per month. Others waive it if you link the account to a checking account at the same bank. Ask your bank what options they offer before opening the account.
The minimum balance is calculated in different ways: some banks look at your balance on the last day of the month, others use the average balance for the month, and still others require the minimum every single day. This matters if your balance fluctuates. A bank that requires the daily minimum is stricter than one that uses the monthly average.
Money market accounts versus savings accounts and CDs
| Feature | Money Market Account | Savings Account | Certificate of Deposit (CD) |
|---|---|---|---|
| Interest rate | Variable, moves with Fed rate | Variable, moves with Fed rate | Fixed for the entire term |
| Withdrawal access | Checks and debit card, with limits | Limited withdrawals, no checks | Locked until maturity; early withdrawal penalty |
| Typical APY range | 4.00% to 5.35% (varies by bank) | 3.50% to 4.75% (varies by bank) | 4.50% to 5.50% (varies by term) |
| Minimum balance | $500 to $25,000 | $0 to $10,000 | $500 to $25,000 |
| FDIC insured | Yes, up to $250,000 | Yes, up to $250,000 | Yes, up to $250,000 |
A money market account pays more interest than a regular savings account because you have fewer withdrawal rights. A savings account typically allows unlimited withdrawals, so banks pay less. A CD pays the most interest because your money is locked away for a set period (three months to five years), giving the bank certainty about how long they can use your deposit.
Choose a money market account if you want higher interest than savings but need occasional access to your money. Choose a savings account if you want simplicity and do not mind lower interest. Choose a CD if you know you will not need the money for a specific period and want the highest may provide rate.
FDIC insurance and what happens if the bank fails
Money market accounts at banks are insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 per depositor, per bank. This means if the bank fails, the FDIC will return your money up to that limit. If you have more than $250,000 in the account, only $250,000 is protected.
If you have a money market account at a credit union instead of a bank, it is insured by the National Credit Union Administration (NCUA) up to the same $250,000 limit. The protection is identical; only the insuring agency differs.
The FDIC insurance covers the account balance as of the date the bank fails, not the interest you would have earned if the bank had stayed open. Bank failures are rare in the United States, and no depositor has lost FDIC-insured funds since the program began in 1933.
When a money market account makes sense for your situation
A money market account works well if you have a lump sum of money (at least $1,000 to $10,000) that you want to earn interest on but might need to access within the next year or two. Examples include an emergency fund, money saved for a down payment, or a bonus you have not decided how to use yet.
It does not work well if you need to make frequent withdrawals (more than six per month), because you will hit the withdrawal limit and pay fees. It also does not work well if you have less than the minimum balance, because monthly fees will eat into your interest earnings. And it does not work well if you want to lock in a rate, because variable rates can fall if the Fed cuts rates.
Compare rates across banks before opening an account. Online banks often pay higher rates than brick-and-mortar banks because they have lower overhead costs. The difference between 4.50% and 5.35% APY might not sound large, but on a $50,000 balance it means $425 more per year in your pocket.
Frequently Asked Questions
Can I use a money market account like a checking account?
Partially. You can write checks and use a debit card, but most banks limit you to three to six withdrawals per month. If you need to make more withdrawals than that, you will pay a fee or the bank may convert your account to savings. For frequent transactions, a checking account is better.
What happens if I go below the minimum balance?
The bank will charge a monthly maintenance fee (usually $10 to $25) until your balance rises above the minimum again. If your balance stays low for several months, the bank may close the account and send you the remaining balance by check or transfer.
Do I lose interest if rates fall?
Yes. Because the rate is variable, when the Federal Reserve cuts rates, your bank will lower your APY within weeks. You keep the money you have already earned, but future interest accrues at the lower rate. This is the trade-off for having access to your money.
Can I have multiple money market accounts at different banks?
Yes. FDIC insurance covers up to $250,000 per depositor per bank, so you can open accounts at multiple banks and each one is separately insured. This is useful if you have more than $250,000 to deposit and want full insurance coverage.
Is a money market account safe if the bank fails?
Yes. The FDIC insures deposits up to $250,000, so even if the bank fails, you will get your money back. Bank failures are extremely rare in the United States, and no FDIC-insured depositor has lost money since 1933.