A money market account is a hybrid savings product that combines features of checking and savings accounts

A money market account (MMA) is a deposit account offered by banks and credit unions that typically pays higher interest than a regular savings account. In exchange, it usually requires a larger opening deposit—often $2,500 to $10,000, though this varies by institution—and asks you to maintain a minimum balance to avoid fees.

The account gives you limited check-writing ability and a debit card, so you can access your money more easily than you can with a traditional savings account. However, federal rules limit you to six withdrawals or transfers per month (though this rule is enforced less strictly now than it once was). The trade-off is straightforward: more access and higher interest in exchange for a bigger commitment upfront.

Money market accounts are FDIC-insured at banks and NCUA-insured at credit unions, meaning your deposits are protected up to $250,000 per account owner per institution. They sit between a regular savings account and a money market fund—which is a different product entirely and not insured the same way.

Key Takeaways

  • Money market accounts pay higher interest than savings accounts but require a larger opening deposit and minimum balance to avoid monthly fees.
  • You get limited check-writing and debit card access, making them more flexible than savings accounts but less flexible than checking accounts.
  • Federal rules cap withdrawals at six per month, though enforcement has loosened in recent years.
  • Your deposits are insured up to $250,000 by the FDIC (at banks) or NCUA (at credit unions), the same protection as other deposit accounts.
  • Interest rates on money market accounts fluctuate with the federal funds rate and vary widely between institutions, so shopping around matters.

How interest rates work on money market accounts

The interest rate on a money market account is not fixed—it moves up and down based on what the Federal Reserve does with the federal funds rate. When the Fed raises rates, banks typically raise the rates they offer on money market accounts. When the Fed cuts rates, those account rates fall too, sometimes within weeks.

The rate you receive also depends heavily on which bank or credit union you choose. A large national bank might offer 0.01% APY on a money market account while an online bank or credit union offers 4.50% APY on the same type of account. The difference compounds over time, especially if you are holding a large balance. Checking the current rates at several institutions before opening an account is worth the 15 minutes it takes.

Some accounts offer tiered rates, meaning the interest rate increases as your balance grows. For example, balances under $10,000 might earn 3.50% APY, while balances over $50,000 earn 4.25% APY. Read the fine print to understand how your specific account calculates interest.

Minimum balance requirements and monthly fees

Most money market accounts require you to keep a minimum balance—often $2,500 or $5,000—to earn the advertised interest rate and avoid a monthly maintenance fee. If your balance drops below that threshold, the bank may charge you $10 to $25 per month until you bring it back up. Some institutions waive the fee if you maintain a certain balance in another account with them or set up direct deposit.

A few online banks and credit unions offer money market accounts with no minimum balance requirement, though their interest rates may be lower than accounts that do require one. The trade-off is worth evaluating based on your situation: if you have $5,000 to deposit and can keep it there, a higher-rate account with a minimum balance requirement usually wins. If you have less or expect to dip below the minimum, a no-minimum account saves you from surprise fees.

Always ask about the fee structure before opening. Some banks charge a fee if your balance falls below the minimum on any single day of the month, while others only check the balance at the end of the month. That difference can matter if you are moving money around.

When a money market account makes sense for your savings

A money market account works well if you have a chunk of money—$5,000 or more—that you want to keep accessible but do not need to touch regularly. It is better than a savings account because the interest rate is higher. It is better than a regular checking account because you earn meaningful interest instead of earning nothing.

They are particularly useful for an emergency fund. You want that money to be safe, insured, and accessible without penalty if something goes wrong. A money market account checks all three boxes. You can write a check or use the debit card if you need cash quickly, and you are not locked into a term like you would be with a certificate of deposit (CD).

A money market account is less useful if you plan to make frequent withdrawals, because the six-withdrawal limit can become annoying. It is also less useful if you have less than $2,500 to deposit, because the minimum balance requirement and associated fees eat into any interest you earn. In those cases, a high-yield savings account with no minimum balance may serve you better.

Money market accounts versus savings accounts and CDs

The main difference between a money market account and a regular savings account is the interest rate and the access features. A savings account typically pays less interest but has no minimum balance requirement and no withdrawal limits. A money market account pays more interest but requires a larger deposit and limits your withdrawals.

A certificate of deposit (CD) locks your money away for a set period—three months, one year, five years—and pays a fixed interest rate that is usually higher than a money market account. The catch is that you cannot withdraw the money early without paying a penalty. If you know you will not need the money for a specific period, a CD often pays more. If you want to keep your options open, a money market account is more flexible.

A money market fund, despite the similar name, is not the same thing. It is an investment product that holds short-term debt securities, not a bank deposit account. It is not FDIC-insured, and its value can fluctuate. Most people confuse the two, so make sure you understand which one you are opening.

How to open a money market account

Opening a money market account takes the same steps as opening any bank account. You will need a government-issued ID, your Social Security number, and proof of address (usually a recent utility bill or lease). Most banks let you open an account online in 10 to 15 minutes.

Before you open, compare rates at three to five institutions. Check the current APY, the minimum balance requirement, the monthly fee, and whether the bank waives fees for direct deposit or linked accounts. Online banks and credit unions often have higher rates than large national banks, so do not skip them in your search.

Once you have chosen an institution, you will fund the account with your opening deposit. You can usually do this by electronic transfer from another bank account, by mailing a check, or by visiting a branch in person. The account should be active and earning interest within one to three business days.

Frequently Asked Questions

Can I write checks from a money market account?

Yes, but the number is limited. Most banks allow three to six checks per month, though some allow unlimited check-writing. The federal rule that capped withdrawals at six per month is no longer strictly enforced, so policies vary. Check your bank's specific terms before opening.

What happens if I exceed the withdrawal limit?

Policies differ. Some banks charge a fee per excess withdrawal, usually $10 to $25. Others convert your account to a checking account or close it. A few do nothing. Read your account agreement or call the bank to understand what happens at your specific institution.

Is my money safe in a money market account?

Yes. Deposits at banks are insured by the FDIC up to $250,000 per account owner per institution. Deposits at credit unions are insured by the NCUA up to the same amount. Your balance is protected even if the bank fails.

Can the interest rate on my money market account change?

Yes. The rate is variable, meaning it moves with market conditions and the Federal Reserve's decisions. Your bank can change the rate at any time, though they usually notify you in advance. Some accounts offer a promotional rate for a limited time before dropping to a lower ongoing rate.

What is the difference between a money market account and a money market fund?

A money market account is a bank deposit account insured by the FDIC. A money market fund is an investment product that holds short-term debt securities and is not insured. Money market funds can lose value, while money market accounts cannot. They are different products despite the similar name.