Money Market Account vs. Money Market Fund: What's the Difference?

Money market accounts and money market funds have nearly identical names, and it’s easy to confuse them. But the distinction is important because they have completely different risk profiles. 

A money market account is a bank deposit, meaning it’s insured and predictable. A money market fund, on the other hand, is an investment, just like one in any other mutual fund. While it only invests in ultra-safe, short-term debt, it is not an insured bank product like a money market account.

Here's what actually separates the two types of accounts, how they function differently, and how to figure out which one is a better match with your personal needs. 

Key Takeaways

• The names are similar, but the risk profiles aren't. A money market account is an insured bank deposit, while a money market fund is an uninsured brokerage investment.

• Only the account carries FDIC or NCUA insurance. An MMA protects your principal up to $250,000 per depositor, per institution, per ownership category.

• A money market fund can lose value, though it rarely does. Funds aim to hold a $1 share price but aren't guaranteed, and "breaking the buck" has happened only in rare crises like 2008

Summary generated by AI, verified by MoneyLion editors

What Is a Money Market Account?

A money market account, or MMA, is a deposit account offered by a bank or credit union. Money market accounts usually pay higher rates than standard savings accounts, although that can vary from institution to institution. The important factor is that money market account funds are still bank deposits, meaning your institution holds the cash directly and insures it. In that manner, it functions the same way as a checking or savings account.

How Does a Money Market Account Work?

A money market account works something like a hybrid between a checking and a savings account. You can apply for one online or in person, fund it with a transfer or other deposit, and start earning interest on your balance. You can usually access the cash in your MMA by writing a check or by using a debit card, features that most traditional savings accounts don’t offer. However, your financial institution may cap the number of withdrawals or transfers you can make each month. 

Money market accounts appeal to savers who want to keep their cash safe and liquid but also want it accessible, all while earning more than a checking account offers. As deposit accounts, balances are typically insured up to $250,000 per depositor, per institution, per ownership category, whether the bank is FDIC-insured or the credit union is NCUA-insured. 

When it comes to money market accounts, shopping around can really pay off, as each individual institution sets its own rates. 

What Is a Money Market Fund?

A money market fund, or MMF, is a type of mutual fund, not a deposit account. As with all traditional mutual funds, when you purchase an MMF, you’re buying shares in the fund. The fund manager takes that collective pool of money and invests it in short-term, high-quality debt on behalf of shareholders. Typically investments include Treasury bills, commercial paper or even short-term municipal bonds. 

Money market funds strive to keep a stable share price, typically $1, but that price is not guaranteed. In the unlikely circumstance where a money market fund “breaks the buck,” meaning its share price falls below $1, there is no insurance or guarantee to get your money back, according to the SEC’s Office of Investor Education and Assistance.

How Does a Money Market Fund Work?

Money market funds are typically purchased through brokerage accounts or directly with issuing fund companies. This is another way in which they are different from money market accounts, which are usually opened directly with banks or credit unions.

When you buy a money market fund, you earn regular dividends based on the earnings of the underlying investments. You can choose to either reinvest those dividends into additional shares or take the payouts in cash. Shares are easy to buy or sell, with most funds redeemable on demand, per the SEC. Brokerages typically use money market funds as default places to park cash that isn’t invested in anything else, according to Fidelity. 

Pros and Cons of Money Market Accounts

Pros:

• FDIC or NCUA insured up to $250,000 per depositor, per institution

• Often includes check-writing or debit card access

• Principal doesn't fluctuate with the market

• Rates are often higher than checking and savings accounts

Cons:

• Rates are usually lower than what a money market fund or brokerage cash sweep can pay

• Some accounts require a minimum balance to avoid fees

• Rates are set by individual institutions; some can be below-market

Pros and Cons of Money Market Funds

Pros:

• Yields often track short-term interest rates more closely and competitively

• Highly liquid

• Treasury-focused funds may offer state and local tax advantages

• Offer the convenience of having available cash alongside other brokerage investments in a single account

Cons:

• Not FDIC or NCUA insured

• Share price, while historically stable, isn't guaranteed to hold at $1

• No check-writing or debit card access in most cases

• Requires a brokerage account rather than a simple bank account

How To Decide Which Account Is Right For You

A money market account fits if:

• You want an insured place to stash your cash

• You want check-writing or debit card access

• You're not aggressively chasing yield

A money market fund fits if:

• You already have a brokerage account and want your cash to earn more while it waits

• You're comfortable with an uninsured home for your cash 

• You want a rate that moves closely with current short-term interest rates

• You don't need check-writing or a debit card

Alternatives To Money Market Accounts and Money Market Funds

• High-yield savings account: Often the highest-yielding option in an FDIC-insured account; however, check-writing isn’t available, and most don’t offer debit card access either

• Certificates of deposit (CDs): Insured products offering a fixed rate for a fixed term; can be useful if you want to lock in a high rate, but most carry early withdrawal penalties if you need your money before maturity. 

• Treasury bills: Offer state-tax-exempt interest and are often considered the safest investments available; can purchase directly through TreasuryDirect or a brokerage account, with maturities as short as four weeks.

• Cash management accounts: Brokerage-based accounts that bundle a debit card, bill pay and a money market fund or FDIC sweep into one account, effectively splitting the difference between MMAs and MMFs.

FAQs

Is a money market account the same as a money market fund?

Despite the nearly identical name, MMAs and MMFs are very different. A money market account is a bank deposit, meaning federal insurance applies to the account. A money market fund is an investment in fund shares. Only MMAs carry FDIC or NCUA insurance.

Can I lose money in a money market fund?

It's rare, but yes, it’s technically possible for you to lose money in a money market fund. Share prices of MMFs are not guaranteed the way that insured deposits in money market accounts are. 

Which one pays a higher interest rate?

Money market funds often pay higher rates than money market accounts because their yields tend to track actual market rates, rather than being subject to the whim of individual institutions. However, some banks pay above-market rates in their MMAs in an effort to attract deposits. This makes it worthwhile to check actual current rates rather than assuming that one category always wins.

Do I need a brokerage account to buy a money market fund?

Money market funds are purchased as fund shares. For this reason, you’ll usually have to buy them through a brokerage firm or directly from a fund company, rather than through a bank. 

Is my money market account or fund insured if the institution fails?

A money market account is insured by the FDIC or NCUA up to $250,000 per depositor, per institution. Money market funds are covered by SIPC insurance, but that only applies if a brokerage firm fails, not if the fund simply loses value on its own. 

Photo Credit: iStock.com/ Drs Producoes

Key Terms

• Money market account (MMA) — An insured bank or credit union deposit that pays interest and often adds check-writing or debit card access.

• Money market fund (MMF)

  — A low-risk mutual fund, bought through a brokerage, that invests in short-term debt and carries no federal deposit insurance.

• Net asset value (NAV) — A fund's per-share price, which money market funds try to hold at $1 but don't guarantee.

• Breaking the buck — When a money market fund's share price falls below $1, a rare event most associated with the 2008 crisis.

• FDIC / NCUA insurance — Federal protection of bank and credit union deposits up to $250,000 per depositor, per institution, per ownership category.

• SIPC coverage — Protection of up to $500,000 (including a $250,000 cash sublimit) if a brokerage firm fails, not against a fund losing value.

• Commercial paper — Short-term corporate debt that prime money market funds often hold.

• Liquidity — How quickly you can access your cash without penalty, a key strength of both products.

Sources

• SEC / Investor.gov — Money Market Funds: Investor Bulletin

• FINRA — Taking a Look at Money Market Funds

• SIPC — What SIPC Protects

• CFPB — What is the difference between a money market account and a money market mutual fund?

Summary generated by AI, verified by MoneyLion editors