A money market account (MMA) is a type of deposit account offered by banks and credit unions that typically pays higher interest than a standard savings account. It combines features of both savings and checking accounts: you earn interest on your balance, but you can also write a limited number of checks or make debit card purchases each month. For people who want their cash to grow while staying accessible, a money market account is often the right tool.
How a Money Market Account Works
Money market accounts are federally insured — up to $250,000 per depositor at FDIC-insured banks or NCUA-insured credit unions. The bank pools your deposit with others and invests in short-term, low-risk instruments like Treasury bills, certificates of deposit, and commercial paper. In exchange, it pays you a higher rate than a basic savings account.
Unlike a CD (certificate of deposit), your money is not locked up. You can deposit and withdraw whenever you need to, though some accounts limit you to six withdrawals per month before charging a fee.
Money Market Account vs. Savings Account
The core differences come down to rate, access, and minimum balance requirements:
- Interest rate: MMAs typically pay more than standard savings accounts, though the gap varies widely by institution. High-yield savings accounts at online banks often match or beat MMA rates.
- Access: Many MMAs come with a debit card and check-writing privileges. Most savings accounts do not.
- Minimum balance: MMAs often require a higher minimum balance — commonly $1,000 to $2,500 — to avoid monthly fees or earn the advertised rate.
Money Market Account vs. Money Market Fund
These are two different products that are often confused. A money market account is a bank deposit account insured by the FDIC. A money market fund is a type of mutual fund — it is not FDIC insured and its value can (in rare cases) fall below $1. Money market funds are offered through brokerages and can pay competitive rates, but they carry more risk than a bank MMA.
When a Money Market Account Makes Sense
An MMA is a good fit if you:
- Want to earn more than a basic savings account while keeping full FDIC protection
- Are building an emergency fund and want occasional check-writing access
- Are saving toward a near-term goal (home purchase, car, vacation) and cannot afford to lose any principal
- Need a place to park cash between investments
It is less ideal if you need frequent access (a checking account is better) or if you are chasing the highest possible yield (a high-yield savings account or short-term Treasury bill may pay more with no minimum balance requirement).
What to Look for in a Money Market Account
Not all MMAs are equal. Compare these factors before opening one:
- APY: The annual percentage yield is the most important number. Look for accounts paying well above the national average, which is typically below 0.50%. Online banks routinely offer 4–5% APY during high-rate environments.
- Minimum balance: Some accounts require $1,000 or more to earn the advertised rate or avoid fees. Others have no minimum.
- Monthly fees: Avoid accounts with unavoidable monthly maintenance fees that eat into your earnings.
- Withdrawal limits: Federal rules once capped savings account withdrawals at six per month, but that limit was relaxed in 2020. Many banks still enforce their own version of this limit on MMAs.
- FDIC or NCUA insurance: Always verify the account is insured before depositing.
How to Open a Money Market Account
Opening an MMA takes about 10 minutes online. You will need:
- A government-issued ID (driver’s license or passport)
- Your Social Security number
- Routing and account number from your current bank to fund the new account
Most online banks do not require an in-person visit. Compare rates at a few institutions before committing — even a half-point difference in APY adds up over time on larger balances.
Bottom Line
A money market account offers a solid middle ground between a no-yield checking account and the locked-in nature of a CD. If you have a cash reserve sitting in a basic savings account earning almost nothing, moving it to a high-yield MMA is one of the easiest money moves you can make. Just confirm the minimum balance requirements, check the APY against competing options, and verify FDIC insurance before opening.