A money market account is a hybrid between a savings account and a checking account

A money market account (MMA) is a deposit account that combines features of both savings and checking. You earn interest on your balance—usually higher than a regular savings account—but you can also write checks or use a debit card to withdraw money, though often with limits on how many times per month you can do either.

The trade-off is that money market accounts typically require a higher opening deposit than savings accounts do, and they may charge monthly fees if your balance drops below a minimum. Banks use the money you deposit to make loans and investments, and they pay you interest as your share of what they earn. The interest rate varies by bank and changes based on what the Federal Reserve does with its benchmark rate.

Money market accounts are FDIC insured at most banks, meaning if the bank fails, the government protects your deposits up to $250,000. This makes them safer than keeping cash at home, but the interest you earn is usually modest—often between 4% and 5% annually at this writing, though that changes frequently.

Key Takeaways

  • Money market accounts pay interest higher than savings accounts but require a larger opening deposit and charge fees if your balance falls below the minimum.
  • You can withdraw money by check, debit card, or transfer, but banks often limit how many withdrawals you can make each month without penalty.
  • The interest rate is variable, meaning it can go up or down based on market conditions and what your bank decides to offer.
  • Your deposits are protected by FDIC insurance up to $250,000 per account at banks, or by NCUA insurance at credit unions.

How interest and minimum balances work

When you open a money market account, the bank tells you the annual percentage yield (APY)—the amount of interest you will earn in a year if you leave your money untouched. If a bank offers 4.5% APY and you deposit $10,000, you would earn roughly $450 over twelve months, though the actual amount depends on how often the bank compounds interest (daily, monthly, or quarterly).

Most money market accounts require a minimum opening deposit, often $2,500 to $25,000 depending on the bank. If your balance falls below that minimum, the bank charges a monthly fee—typically $10 to $25—until you bring it back up. Some banks waive the fee if you maintain direct deposit or set up automatic transfers, so it is worth asking when you open the account.

The interest rate is not locked in. Banks can raise or lower the APY whenever they choose, and they usually do when the Federal Reserve changes its rates. This means the amount you earn can shrink even if you do nothing, or grow if rates rise. Online banks and credit unions often offer higher rates than brick-and-mortar banks because they have lower overhead costs.

Withdrawal limits and how they affect you

Federal rules once capped withdrawals from money market accounts at six per month, but that rule was suspended in 2020 and has not returned. However, individual banks still set their own limits, and many restrict how many times you can withdraw by check or debit card—often to three to six per month—without paying a fee per excess withdrawal.

Transfers between your own accounts at the same bank usually do not count toward the limit. Neither do ATM withdrawals at the bank's machines. The limits exist because banks want to discourage people from using money market accounts like checking accounts; they are designed for people who save most of the time and withdraw occasionally.

If you exceed the limit, the bank charges a fee per extra withdrawal—usually $5 to $10 each. Some banks will waive one or two overages per year if you call and ask, but do not count on it. If you need to withdraw money frequently, a regular checking account is a better fit.

Money market accounts versus savings accounts

The main difference is interest rate and access. Money market accounts pay more interest than savings accounts at the same bank, but they require a higher minimum balance and limit your withdrawals. Savings accounts have lower minimums, no withdrawal limits, and charge fewer fees—but the interest is lower, often 0.01% to 0.5% at traditional banks.

If you have $5,000 to $10,000 you want to set aside and do not need to touch it often, a money market account usually makes sense. If you are building an emergency fund and may need to pull money out multiple times, a savings account is simpler. Some people use both: a money market account for money they are saving toward a goal, and a savings account for true emergencies.

Online banks blur this line by offering savings accounts with interest rates as high as money market accounts. Before opening either, compare the rates, minimums, and fees across several banks—the difference can be significant.

Fees that can eat into your earnings

Money market accounts charge several types of fees. A monthly maintenance fee (usually $10 to $25) kicks in if your balance drops below the minimum. An excess withdrawal fee ($5 to $10 per transaction) applies if you exceed the bank's monthly withdrawal limit. Some banks charge an inactivity fee if you do not make a deposit or withdrawal for a set period—often six months to a year—though this is less common.

A few banks charge a fee to close the account if you do so within a certain timeframe, typically 90 days to six months. Always read the fee schedule before you open an account. A bank offering 4.5% interest but charging a $20 monthly fee will wipe out most of your earnings if your balance is small.

Some fees can be avoided. Many banks waive the monthly fee if you maintain a higher balance, set up direct deposit, or keep a linked checking account open. Ask about these waivers when you apply.

Money market accounts at banks versus credit unions

Banks and credit unions both offer money market accounts, and the mechanics are the same—but the insurance and fee structure can differ. At a bank, your deposits are insured by the FDIC (Federal Deposit Insurance Corporation) up to $250,000. At a credit union, they are insured by the NCUA (National Credit Union Administration), also up to $250,000.

Credit unions are member-owned cooperatives, so they often charge lower fees and offer higher interest rates than banks because they do not have to generate profit for shareholders. However, credit unions have fewer branches and ATMs, so access can be more limited unless you join one with a large network.

If you are choosing between a bank and a credit union, compare the interest rate, minimum balance, and fees side by side. A credit union's higher rate might be offset by fewer ATM locations, or vice versa. Both are safe as long as your balance stays under the insurance limit.

When a money market account makes sense

A money market account works well if you have a specific savings goal—a down payment, a vacation, a car—and you want to earn interest without locking your money away. It also suits people who have built an emergency fund and want to earn more on the surplus without taking investment risk.

It does not work well if you need frequent access to your money, if your balance is small (under $5,000), or if you cannot maintain the minimum without stress. It also is not the right choice if you want to invest for long-term growth; a money market account is a savings tool, not an investment account.

If you are unsure whether to open one, start by comparing rates at three to five banks or credit unions. Look at the APY, the minimum balance, the monthly fee, and the withdrawal limit. Then ask yourself: will I keep this balance above the minimum? Will I need to withdraw more than the limit allows? If the answer to either is no, a money market account can work for you.

Frequently Asked Questions

Can I lose money in a money market account?

No. Your principal is protected by FDIC or NCUA insurance, and the interest rate can only go down, not negative. The only way to lose money is if you withdraw more than you deposited, which is your choice, not the bank's.

Is the interest rate may provide?

No. The APY can change at any time, and banks usually lower rates when the Federal Reserve cuts its benchmark rate. Some banks raise rates to attract new customers, then lower them after a few months. Read the fine print to see if the rate is may provide for any period.

What happens if I exceed the withdrawal limit?

The bank charges a fee per excess withdrawal, usually $5 to $10. Some banks may also close the account or convert it to a checking account if you repeatedly exceed the limit. Check your bank's policy before opening the account.

Can I use a money market account as my main checking account?

Technically yes, but it is not ideal. The withdrawal limits and fees make it expensive to use like a checking account. Most people use a checking account for daily spending and a money market account for savings.

How do I open a money market account?

Visit a bank or credit union's website or branch, provide your Social Security number and identification, and make your opening deposit. Most banks let you open online in 10 to 15 minutes. You will need to fund the account within a set timeframe, usually 10 business days.