A money market account is a hybrid between a savings account and a checking account, with interest rates tied to money market rates

A money market account (MMA) is a deposit account offered by banks and credit unions that combines features of both savings and checking accounts. You earn interest on your balance—usually higher than a regular savings account—but you also get limited check-writing or debit card access. The interest rate fluctuates based on the current money market rate, which means your earnings go up or down as the Federal Reserve adjusts its benchmark rates.

The trade-off is that money market accounts come with restrictions. Most require a higher minimum balance to open and maintain, and they limit how many withdrawals you can make per month. If you exceed those withdrawal limits, you'll face fees or the account may be converted to a regular savings account. The account is FDIC-insured (or NCUA-insured at credit unions) up to $250,000, so your principal is protected even if the institution fails.

Key Takeaways

  • Money market accounts pay interest rates that move with the Federal Reserve's benchmark rate, so your earnings change as market conditions shift.
  • You can write checks or use a debit card on most money market accounts, but you're limited to a set number of withdrawals per month—usually six.
  • Minimum opening balances are typically $2,500 to $10,000, and falling below that minimum often triggers a monthly fee.
  • Your deposits are insured up to $250,000 by the FDIC (at banks) or NCUA (at credit unions), protecting your money if the institution fails.

How the interest rate works on a money market account

The interest rate on a money market account is variable, meaning it changes over time. Banks set their rates based on the federal funds rate—the rate the Federal Reserve uses to guide short-term lending between banks. When the Fed raises rates, banks typically raise the rates they pay on money market accounts. When the Fed cuts rates, your earnings drop.

This is different from a certificate of deposit (CD), where your rate is locked in for the entire term. With a money market account, you benefit when rates are rising, but you earn less when rates fall. Banks are required to disclose the current annual percentage yield (APY) before you open the account, but that rate is not may provide to stay the same.

The actual APY you receive depends on your balance. Many banks offer tiered rates: a lower APY on balances under $25,000 and a higher APY on larger balances. Some institutions also offer promotional rates for new customers, which may be higher than their standard rate for a limited time.

Withdrawal limits and how they work

Federal rules historically limited money market account withdrawals to six per month, though this restriction was relaxed during the pandemic. Today, limits vary by bank—some have removed them entirely, while others maintain the six-withdrawal cap or impose their own limits. Check your bank's specific rules before opening an account.

The withdrawal limit typically applies to transfers and checks, but not to in-person withdrawals at a branch or ATM. If you exceed the limit, your bank may charge a fee (usually $10 to $25 per excess withdrawal) or close the account and move your money to a regular savings account. Some banks will simply refuse the transaction.

If you need frequent access to your money, a money market account may not be the right fit. A regular checking account or high-yield savings account without withdrawal limits might serve you better.

Minimum balance requirements and fees

Most money market accounts require an opening deposit of $2,500 to $10,000, though some banks set minimums as high as $25,000. If your balance falls below the minimum, you'll typically be charged a monthly maintenance fee—often $10 to $25—until you bring it back up. A few banks waive the fee if you maintain direct deposit or set up automatic transfers.

Beyond the maintenance fee, watch for other charges: excess withdrawal fees, overdraft fees (if you write a check for more than your balance), and fees for closing the account early. Some banks charge nothing if you maintain the minimum; others charge fees regardless. Compare the fee structure across banks before deciding where to open your account.

Money market accounts versus savings accounts and CDs

A high-yield savings account also pays interest, but it typically has no minimum balance, no withdrawal limits, and no check-writing ability. The trade-off is that the APY may be slightly lower than a money market account at the same bank. If you want simplicity and frequent access, a savings account is usually the better choice.

A certificate of deposit locks in a fixed rate for a set term (three months to five years). You earn more predictable interest, but you cannot withdraw the money without paying an early withdrawal penalty. Money market accounts give you flexibility that CDs do not, but CDs often pay higher rates because you commit to leaving the money untouched.

A money market fund is different from a money market account. It is an investment product sold by brokerages, not a bank deposit account. Money market funds are not FDIC-insured and carry different risks.

Who should use a money market account

Money market accounts work best for people who want to earn more interest than a regular savings account offers but do not need to withdraw money frequently. They are often used for emergency funds, short-term savings goals, or money you want to keep accessible but not spend.

If you have a large balance (above $25,000), the tiered rates at some banks make money market accounts attractive. If you prefer the option to write checks occasionally without switching to a checking account, the check-writing feature adds convenience. However, if you make many withdrawals, need no minimum balance, or want a may provide rate, a different account type will likely suit you better.

How to open a money market account

Most banks and credit unions allow you to open a money market account online, by phone, or in person. You will need to provide your Social Security number, proof of identity, and proof of address. Some institutions require an initial deposit to fund the account immediately; others let you fund it after opening.

Before opening, compare the current APY, minimum balance requirement, withdrawal limits, and fee structure across several banks. The APY changes frequently, so what is highest today may not be highest next month. Read the account agreement carefully to understand the withdrawal rules and what triggers fees.

Frequently Asked Questions

Can I lose money in a money market account?

No. Your principal is protected by FDIC or NCUA insurance up to $250,000. The interest rate fluctuates, so you earn less when rates fall, but your deposits themselves are safe. The only way to lose money is if you withdraw more than you have deposited.

What happens if I go below the minimum balance?

Your bank will charge a monthly maintenance fee—typically $10 to $25—until your balance rises above the minimum again. Some banks waive the fee if you set up direct deposit or automatic transfers. A few banks will close the account and move your money to a regular savings account instead of charging a fee.

Is a money market account the same as a money market fund?

No. A money market account is a bank deposit account insured by the FDIC. A money market fund is an investment product sold by brokerages and is not insured. Money market funds carry investment risk; money market accounts do not.

Can I write checks on a money market account?

Most money market accounts come with check-writing privileges, though the number of checks you can write per month may be limited. Some banks also provide a debit card. Check your bank's specific terms, as not all institutions offer both features.

What is the difference between APY and interest rate?

The interest rate is the percentage your bank pays on your balance. APY (annual percentage yield) is the rate after accounting for compounding—how often interest is calculated and added back to your account. APY is always equal to or higher than the stated interest rate and is the number you should compare across banks.