A money market account (MMA) is a type of deposit account offered by banks and credit unions that typically pays a higher interest rate than a standard savings account while keeping your funds federally insured.
As of 2026, MMAs at banks are insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 per depositor, per insured institution.
MMAs at credit unions carry equivalent protection through the National Credit Union Administration (NCUA).
These accounts combine features of both checking and savings accounts — they often come with check-writing privileges and, at some institutions, a debit card — while earning rates that generally track the Federal Reserve's federal funds rate.
Understanding the difference between a money market account and a money market mutual fund is critical, as the two are very different products with different risk profiles.
Comparing a money market account to a high-yield savings account or a certificate of deposit is also worth doing before choosing where to hold your cash.
What Is a Money Market Account?
A money market account (MMA) is an interest-bearing deposit account at a bank or credit union.
It is distinct from a money market fund, which is an investment product offered by brokerage firms and mutual fund companies.
The key distinction is that an MMA is a federally insured bank deposit, while a money market fund is a security and is not FDIC insured.
According to the Consumer Financial Protection Bureau (CFPB), money market accounts and money market mutual funds are sometimes confused because of their similar names, but they are fundamentally different products.
The money market account is a safer product from a deposit-insurance standpoint, while the money market fund may offer slightly higher yields but carries investment risk.
Features typically associated with money market accounts include:
- FDIC or NCUA insurance up to applicable limits
- Interest rates that are generally higher than traditional savings accounts
- Check-writing privileges (at many institutions)
- Debit card access (at some institutions)
- Minimum balance requirements (commonly $1,000 to $10,000+)
- Transaction limits (though federal caps have changed since 2020 — see below)
How Money Market Accounts Work
When you open an MMA, the bank holds your deposit and pays you interest on the balance.
The rate is variable and typically adjusts with prevailing interest rates in the broader economy.
Banks use MMA deposits — along with other deposits — to fund loans and other activities, and they pay you a portion of what they earn on those assets.
MMAs are tiered at most institutions: higher balances earn higher rates. Some accounts pay a promotional rate for new customers during an introductory period, after which the rate reverts to a standard variable rate.
FDIC Insurance Coverage
According to the FDIC, money market deposit accounts are insured up to $250,000 per depositor, per insured bank, per ownership category as of 2026.
This means if a bank fails, the FDIC will cover your MMA balance up to $250,000.
Joint accounts, retirement accounts, and other ownership categories are counted separately, potentially allowing depositors to insure more than $250,000 across different account types at the same institution.
Transaction Limits and Regulation D
Historically, Regulation D — a Federal Reserve rule — limited savings accounts and money market accounts to six "convenient" transfers or withdrawals per month.
In April 2020, the Federal Reserve Board removed the numeric limit from Regulation D, as described in the Federal Reserve's H.6 statistical release.
However, many banks and credit unions continue to impose their own transaction limits on MMAs as a matter of internal policy.
Exceeding the bank's limit may result in fees or account reclassification. Always review your account agreement to understand your institution's specific transaction rules.
How Rates Are Determined
MMA rates are variable and primarily influenced by the Federal Reserve's target federal funds rate. When the Fed raises rates, banks typically increase MMA yields — though not always immediately or proportionally. When the Fed cuts rates, MMA yields generally fall.
As of 2026, the rate environment significantly affects the attractiveness of MMAs relative to other cash alternatives such as high-yield savings accounts.
High-yield MMAs at online banks have historically offered rates substantially higher than the national average at traditional brick-and-mortar banks.
Unlike a certificate of deposit, the MMA rate is not locked in, which means it can rise or fall with the market.
Types of Money Market Accounts
While all MMAs share the core features of FDIC or NCUA insurance and variable interest, there are meaningful variations among offerings:
Standard MMA at a Traditional Bank
Offered by large national and regional banks, these accounts typically pay rates close to the national average for MMAs. They may offer in-person service and integration with other bank products, but rates are often lower than online alternatives. Minimum balance requirements vary widely.
High-Yield MMA at an Online Bank
Online banks and fintech institutions often pay significantly higher rates than traditional banks because they have lower overhead costs.
High-yield MMAs at online banks may pay several times the national average.
However, access is typically limited to online or mobile banking, and in-person service is not available.
Credit Union Money Market Accounts
Credit unions, as member-owned nonprofit institutions, may offer competitive rates on money market accounts.
Credit union accounts are insured by the NCUA rather than the FDIC, but the coverage limits and structure are equivalent.
Membership in a credit union is typically required to open an account.
Money Market Account vs. Alternative Cash Products
| Feature | Money Market Account | Regular Savings Account | Money Market Fund | CD (Certificate of Deposit) |
|---|---|---|---|---|
| FDIC/NCUA insured | Yes (up to $250K) | Yes (up to $250K) | No (SEC-regulated investment) | Yes (up to $250K) |
| Typical rate vs. savings | Higher | Lower baseline | Comparable or higher | Often higher, fixed |
| Liquidity | High (subject to transaction limits) | High (subject to transaction limits) | High (T+1 settlement) | Low — penalty for early withdrawal |
| Check-writing | Often yes | Rarely | Sometimes (brokerage MMF) | No |
| Principal risk | None (within insurance limits) | None | Minimal ("breaking the buck" risk) | None (within insurance limits) |
| Rate type | Variable | Variable | Variable | Fixed for term |
According to Investor.gov, cash equivalents including money market funds serve a different purpose in an investment portfolio than FDIC-insured bank deposits.
The choice between them depends on your priority — absolute principal protection (bank MMA) versus potentially higher yield with minimal but non-zero risk (money market fund).
Who Benefits Most from a Money Market Account?
Money market accounts may be particularly well-suited for:
- Emergency funds: The combination of FDIC insurance, liquidity, and above-average yields makes MMAs a common recommendation for emergency fund storage. For guidance on sizing your emergency reserve, see our overview of emergency fund size — a commonly cited target is 3–6 months of essential expenses.
- Short-term savings goals: If you are saving for a home down payment within 1–3 years or another major purchase, an MMA protects your principal while earning more than a checking account.
- Parking cash between investments: Investors who have sold securities and are waiting for the right opportunity to reinvest may hold proceeds in an MMA to earn yield without committing to a longer-term product.
- Business operating reserves: Small business owners sometimes use MMAs for operating reserves that need to remain accessible but should earn more than a standard checking account.
Key Risks and What to Watch Out For
While money market accounts are among the safest financial products available, there are several considerations to evaluate:
Minimum Balance Requirements and Fees
Many MMAs require a minimum balance — often $1,000 to $10,000 — to earn the advertised rate or to avoid a monthly maintenance fee.
Falling below the minimum may result in the account earning a lower rate or being charged a fee that offsets the interest earned.
Always review the fee schedule before opening an account.
Variable Rate Risk
MMA rates are not locked in.
When the Federal Reserve cuts its target federal funds rate, MMA yields typically fall.
If you need a guaranteed rate for a specific term, a certificate of deposit (CD) may be more appropriate, though CDs are less liquid and typically charge a penalty for early withdrawal.
Exceeding FDIC Limits
If your total deposits at a single bank exceed $250,000 within a single ownership category, the amount above the limit is not federally insured.
If you have significant savings, consider spreading deposits across multiple FDIC-insured institutions or across different ownership categories (individual, joint, retirement) to maximize coverage.
Money Market Account vs. Money Market Fund Confusion
The similar names of money market accounts and money market funds cause frequent confusion.
Money market funds are investment products — not bank deposits — and are not FDIC insured.
While they have historically maintained a stable $1.00 net asset value (NAV), they have "broken the buck" (fallen below $1.00 NAV) in rare market stress events.
If principal protection is your priority, an FDIC-insured MMA at a bank is the appropriate choice.
Frequently Asked Questions
Is a money market account the same as a money market fund?
No. A money market account is an FDIC-insured deposit account at a bank or NCUA-insured account at a credit union — your principal is protected up to $250,000.
A money market fund is an investment product offered by mutual fund companies and brokerages, regulated by the SEC, and is not FDIC insured.
Both aim to preserve capital and provide liquidity, but they differ significantly in their protection, regulatory structure, and yield potential.
How much can I keep in a money market account?
There is generally no maximum balance limit imposed by the bank, but FDIC insurance only covers up to $250,000 per depositor, per insured bank, per ownership category as of 2026.
Balances above that threshold are not federally insured.
If you need to hold more than $250,000 in cash, consider spreading deposits across multiple FDIC-insured institutions or using different account ownership categories to maximize coverage.
Can I write checks from a money market account?
Many money market accounts include check-writing privileges, though not all. Some institutions also provide a debit card linked to the MMA. However, the number of checks or transfers you can make per month may be limited by your bank's internal policy.
Review your account agreement carefully to understand transaction limits at your specific institution.
How often do money market account rates change?
MMA rates are variable and may change at any time at the bank's discretion, though they tend to move in response to changes in the Federal Reserve's target federal funds rate.
Rates may be adjusted weekly, monthly, or following Federal Open Market Committee (FOMC) decisions.
Unlike a CD, an MMA does not lock in a rate, so your yield may rise in a tightening rate environment and fall when rates are cut.
Is a money market account a good place for an emergency fund?
A money market account is a commonly recommended vehicle for emergency funds because it combines FDIC insurance (protecting your principal), relatively high liquidity (you can access funds quickly), and above-average interest rates compared to standard checking or savings accounts.
Financial planning guidance typically suggests keeping 3–6 months of essential expenses in a liquid, insured account — see our guide on emergency fund size for more detail on how to set your target.
An MMA at a high-yield online bank may be a suitable option.
Sources & References
- FDIC — FDIC deposit insurance coverage for money market deposit accounts and other financial products — https://www.fdic.gov/resources/deposit-insurance/financial-products-insured/index.html
- Federal Reserve — H.6 statistical release and background on the removal of Regulation D transaction limits in 2020 — https://www.federalreserve.gov/releases/h6/
- Investor.gov — Overview of cash and cash equivalents, including money market funds and deposit account alternatives — https://www.investor.gov/introduction-investing/investing-basics/investment-products/cash-and-cash-equivalents
- CFPB — Explanation of the difference between a money market account (bank deposit) and a money market mutual fund (investment product) — https://www.consumerfinance.gov/ask-cfpb/whats-the-difference-between-a-money-market-account-and-a-money-market-mutual-fund-en-799/
Last updated: April 27, 2026