A money market account (MMA) is a type of deposit account at a bank or credit union that typically pays higher interest than a standard savings account, while offering more flexibility — including check-writing privileges and debit card access.
Disclaimer: This article is educational. Interest rates change frequently. Verify current rates and terms before opening any account.
Money Market Account vs. Savings Account
| Feature | Money Market Account | Regular Savings Account | |---|---|---| | Interest rate | Usually higher | Usually lower | | Check writing | Often yes | No | | Debit card | Often yes | Rarely | | Minimum balance | Usually higher | Lower or none | | FDIC insured | Yes (up to $250k) | Yes (up to $250k) | | Withdrawal limits | Historically 6/month | Historically 6/month |
The fundamental difference: a money market account usually offers better rates and more access methods, but may require a higher minimum balance to earn the advertised rate or avoid fees.
Money Market Account vs. Money Market Fund
These are frequently confused:
Money market account (MMA): A bank deposit account. FDIC insured. Your principal is protected.
Money market fund: A type of mutual fund invested in short-term debt instruments. Offered through brokerages. Not FDIC insured (though extremely low risk historically). Held in a brokerage account, not a bank account. Usually accessible for investment purposes.
When people talk about "sweeping cash" into a money market inside a brokerage account, they're usually referring to a money market fund.
When a Money Market Account Makes Sense
Emergency fund with more flexibility: If you want your emergency fund to earn solid interest but prefer to access it via check or debit card rather than waiting for a bank transfer, a money market account works well.
Business accounts: Small business owners often use MMAs for operating reserves — earning more than a checking account while maintaining easy access.
Short-term savings: Similar use case to a high-yield savings account. The two are often interchangeable in practice; compare current rates.
Rate Comparison
Money market account rates move with the Federal Reserve's benchmark rate — the same as high-yield savings accounts. When rates are high, MMAs can pay 4–5%+ APY. When rates are low, they may pay almost nothing.
Because MMAs and HYSAs compete for the same deposits, their rates are usually similar. The difference often comes down to:
- Whether you want check-writing/debit access
- Minimum balance requirements
- Specific promotions or intro rates
Minimums and Fees
Many money market accounts require a minimum balance to earn the highest advertised rate or avoid monthly fees. Common structures:
- No fee if balance stays above $5,000 or $10,000
- Tiered rates (higher balance = higher rate)
- Fee of $10–25/month if balance falls below minimum
Read the fine print. A $15/month fee on a $3,000 balance erases most of the interest benefit.
How to Choose
If you want:
- Highest possible rate, no other needs → High-yield savings account
- Check writing and/or debit access + good rate → Money market account
- Guaranteed rate for a specific term → CD
- Flexibility for investing → Money market fund within a brokerage
For most people building an emergency fund or holding short-term savings, the choice between a HYSA and a MMA comes down to comparing current rates at reputable institutions.
Opening a Money Market Account
Available at most banks and credit unions, as well as many online banks. The application process is similar to opening any bank account — identification, Social Security number, initial deposit.
Online banks and credit unions often offer the most competitive MMA rates, just as they do with HYSAs.