Money Market Account: A Practical Guide to MMAs vs HYSAs and CDs
A money market account is a bank deposit account that usually pays a higher interest rate than a regular savings account. The CFPB explains that MMAs may allow limited check writing and debit card use, unlike most savings accounts.
This guide covers how MMAs work, how they compare to high-yield savings accounts and CDs, what FDIC coverage protects, and when each account is the right choice for your cash.
What a money market account is
A money market account (MMA) is an interest-bearing deposit account at a bank or credit union. The CFPB describes MMAs as savings-style accounts that tend to pay higher interest than plain savings accounts. They often allow limited check writing and debit card use, which regular savings accounts usually do not.
Most MMAs require a higher minimum balance than a basic savings account, sometimes $1,000 or more. Some banks pay a higher rate only if you keep a balance above a set threshold. Read the fee schedule before opening one, because monthly fees can wipe out the extra interest on smaller balances.
MMA vs money market mutual fund
This is the single biggest source of confusion. A money market account is a bank deposit, and it is FDIC insured. A money market mutual fund is an investment sold by brokerage firms, and it is not FDIC insured, though it may have SIPC coverage.
The CFPB warns that these two products follow different regulations even though they share a similar name. If someone tells you their money market pays a much higher rate than any bank, they may mean a mutual fund. Check the account paperwork for the phrase 'FDIC insured' before you deposit money.
FDIC coverage rules that protect your cash
FDIC insurance covers deposits at insured banks up to $250,000 per depositor, per bank, per ownership category. Money market deposit accounts, savings accounts, checking accounts, and CDs all fall under this coverage. Credit union deposits get the same protection through the NCUA.
A couple can effectively cover more by using different ownership categories. Two individual accounts and one joint account at the same bank give a couple up to $1,000,000 in coverage. The FDIC's Electronic Deposit Insurance Estimator (EDIE) calculates your exact coverage based on how the accounts are titled.
MMA vs high-yield savings account (HYSA)
Both accounts are FDIC-insured bank deposits that pay competitive interest. The differences show up in access and minimums. MMAs often allow limited check writing and a debit card, while HYSAs typically require an online transfer to move money. HYSAs from online-only banks often pay higher rates and have lower minimums.
Pick an MMA when you want quick check or debit access to a large cash balance, like a home down payment fund you may need on short notice. Pick an HYSA when the highest rate matters most and you do not need check-writing. Use our high-yield savings calculator to compare rates in real dollars.
MMA vs CD (certificate of deposit)
A certificate of deposit (CD) locks your money for a fixed term, usually 3 months to 5 years, in exchange for a set interest rate. CDs typically charge an early-withdrawal penalty if you break the term. MMAs stay liquid and let you withdraw anytime, but their rate can change at any time.
Use a CD when you know the exact date you need the cash and rates might drop. Use an MMA when you need flexibility or the timeline is uncertain. Many savers ladder CDs by opening several with staggered maturity dates, keeping some cash accessible while locking in longer-term rates. Model your goal with our savings goal calculator.
Withdrawal limits: how many times you can take money out
Most money market accounts cap 'convenient' withdrawals — checks, debit card purchases, and electronic transfers — at around six per month, even though federal law no longer requires it. The old rule was the Federal Reserve's Regulation D, which capped these transfers from savings-type accounts at six per statement cycle. The Fed suspended that requirement in April 2020, but it left each bank free to keep its own cap, and many did.
Not every transaction counts against the cap. ATM cash withdrawals and in-branch withdrawals are typically unlimited, because the rule was aimed at 'convenient' transfers. What usually counts: checks, debit purchases, online transfers to another account, and automatic bill payments. Cross your bank's cap and you'll pay an excess-withdrawal fee — often $5 to $15 per transaction — and a bank can convert a repeat offender's MMA into a checking account that earns little or no interest.
Plan around the cap instead of fighting it. Route monthly bills through checking, and use the MMA for occasional large moves — funding an investment, covering an emergency, sending a down payment. If you find yourself bumping the limit every month, the money you're moving belongs in checking, not an MMA. Your bank's fee schedule lists its exact cap and excess fee; check it before you open the account.
Treasury bills and Series I savings bonds: the other cash options
Treasury bills and Series I savings bonds are two more places to park cash that pay competitive interest without bank credit risk, since both are backed directly by the U.S. government instead of FDIC insurance. You buy both directly from the Treasury at TreasuryDirect.gov, with no brokerage account required.
A Treasury bill (T-bill) is a short-term government security sold in terms of 4, 8, 13, 17, 26, or 52 weeks. You buy it at a discount and receive the full face value at maturity, and the interest is exempt from state and local income tax, though it's still taxed federally — a real edge over a bank account if you live in a high-state-tax state. T-bill rates are set at auction and change with every offering, so check the current auction results on TreasuryDirect before you decide.
A Series I savings bond pays a composite rate made of a fixed rate that never changes for the life of the bond, plus an inflation rate that resets every six months. You can buy up to $10,000 in electronic I bonds per calendar year, per Social Security number, through TreasuryDirect. The tradeoff is liquidity: you can't cash an I bond out at all in the first 12 months, and cashing one out before 5 years costs you the last 3 months of interest as a penalty.
Here's how the choice might play out on $10,000 for a year. Say a competitive HYSA is paying 4.00% APY, a 6-month T-bill is auctioning near 4.10%, and an I bond's current composite rate is running close to 4.30% — in that illustrative scenario, the HYSA would earn roughly $400 over the year, the 6-month T-bill about $205 over its term (annualized, close to $410), and the I bond about $430, before counting any state tax savings from the T-bill's exemption. Rates change constantly, so treat these numbers as illustrative, not a quote — check the current APY, the latest T-bill auction results, and the I bond composite rate at TreasuryDirect.gov before you decide.
For most savers, an HYSA or MMA still wins on flexibility, since you can withdraw either one anytime without penalty. T-bills and I bonds are worth adding once you have cash you're confident you won't need for several months to a few years, especially if the state tax exemption or inflation protection matters for your situation.
Frequently asked questions
What is a money market account?
A money market account (MMA) is an interest-bearing deposit account at a bank or credit union. The CFPB notes that MMAs usually pay higher interest than regular savings accounts and often allow limited check writing or debit card use. MMAs are FDIC insured up to $250,000 per depositor, per bank.
How much would $10,000 earn in a year in a money market account?
It depends on the account's current APY, which changes over time — but as an example, $10,000 in a money market account paying 4% APY would earn roughly $400 over a year. Compare that figure against a high-yield savings account, a 6-month Treasury bill, or a Series I savings bond, since all four can hold cash you don't need right away, each with its own liquidity and tax tradeoffs.
Is a money market account FDIC insured?
Yes, a money market account at an FDIC-insured bank is protected up to $250,000 per depositor, per bank, per ownership category. This coverage is separate from a money market mutual fund, which is an investment and is not FDIC insured. Credit union MMAs get the same coverage through the NCUA.
What's the difference between a money market account and a money market fund?
A money market account is a bank deposit that is FDIC insured. A money market mutual fund is an investment product sold by brokerages, and it is not FDIC insured. The CFPB notes the two products follow different regulations despite the similar name.
Money market account vs high-yield savings account: which is better?
Both are FDIC-insured bank deposits that pay competitive rates. An MMA often adds check writing and debit card access, useful for large balances you may need quickly. An HYSA, especially at an online bank, often pays a higher rate with lower minimums but no check access.
Money market account vs CD: which should I choose?
Choose a CD when you know the date you need the cash and want to lock in a rate. Choose a money market account when you need flexible access to the money at any time. MMA rates can change, while CD rates are fixed until maturity but come with an early-withdrawal penalty.
How much can I put in a money market account?
There is no legal cap on deposits into an MMA, but FDIC insurance covers only up to $250,000 per depositor, per bank, per ownership category. To insure more, you can spread deposits across multiple banks or use different ownership categories, like adding a joint account with a spouse.
How many withdrawals can I make from a money market account?
It depends on your bank. The Federal Reserve suspended Regulation D's six-per-month cap on convenient withdrawals in April 2020, but many banks kept a limit of around six checks, debit purchases, or electronic transfers per month. ATM and in-branch withdrawals usually don't count. Exceeding your bank's cap typically costs $5 to $15 per extra transaction.
Sources
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