What Is a Money Market Account?
A money market account (MMA) is a type of savings account that typically offers higher interest rates than regular savings accounts. Money market accounts are FDIC-insured (up to $250,000), making them one of the safest places to park cash while earning competitive returns.
Unlike CDs, money market accounts give you access to your money at any time — most offer check-writing privileges and debit cards. The trade-off is that rates can fluctuate, while CD rates are locked in.
Money Market vs Savings Account vs CD
| Feature | Money Market | Savings Account | CD |
|---|---|---|---|
| Typical APY (2026) | 4.0%-5.0% | 0.5%-1.0% | 4.0%-5.0% |
| Liquidity | High (anytime access) | High | Low (early withdrawal penalty) |
| FDIC Insured | Yes ($250K) | Yes ($250K) | Yes ($250K) |
| Minimum Balance | Often $1,000-$2,500 | Usually $0-$100 | Usually $500-$1,000 |
| Check Writing | Yes (limited) | No | No |
| Rate Type | Variable | Variable | Fixed |
When to Use a Money Market Account
- Emergency fund — earns 4-5% while staying fully accessible
- Short-term savings goals — house down payment, car fund, vacation (1-3 year horizon)
- Cash reserves above HYSA limits — some banks offer tiered MMA rates for larger balances
- Business operating cash — earn interest on cash reserves while maintaining check-writing access
Top Money Market Rates in 2026
As of 2026, the best money market account rates range from 4.0% to 5.0% APY at online banks and credit unions. Traditional brick-and-mortar banks typically offer 0.5%-1.5%. The rate environment depends on the Federal Reserve's interest rate decisions — when the Fed raises rates, money market yields typically increase.
How Money Market Interest Is Calculated
Most money market accounts compound interest daily and credit it monthly. The formula is: A = P(1 + r/n)^(nt), where P is principal, r is the annual rate, n is compounding frequency, and t is time in years. Daily compounding on a $10,000 deposit at 4.5% APY earns about $460 in the first year — compared to just $50 in a 0.5% savings account.