High-yield savings vs. money market account vs. money market fund: what each one actually is
A money market account and a money market fund sound interchangeable, but one is an FDIC- or NCUA-insured bank deposit and the other is an investment that isn't. Here's how the three cash options differ.
"Where should I keep my cash?" usually gets three overlapping answers: a high-yield savings account, a money market account, or a money market fund. The names blur together, but the first two are bank deposits and the third is an investment. That difference decides what protection you have.
The short version
| | High-yield savings | Money market account | Money market fund | |---|---|---|---| | What it is | Deposit account at a bank or credit union | Deposit account at a bank or credit union | Mutual fund, usually held at a brokerage | | Protection | FDIC or NCUA, up to $250,000 per owner | FDIC or NCUA, up to $250,000 per owner | Not FDIC insured; SIPC covers brokerage failure, not investment loss | | Can its value fall? | No, a deposit balance doesn't fluctuate (within insurance limits) | No, a deposit balance doesn't fluctuate (within insurance limits) | Yes, it's an investment | | Rate shown as | APY | APY | Yield, such as a 7-day yield |
High-yield savings: a deposit account with a rate attached
"High-yield" is a marketing label, not a regulatory category. It generally means a savings account paying noticeably more than the average. It's still a deposit account, so the standard FDIC or NCUA coverage applies. Our guide to what FDIC insurance covers if your bank fails explains the $250,000 limit and the ownership categories.
Money market accounts: a deposit account with check or debit features
Per the CFPB, a money market account is offered by banks and credit unions and is insured by the FDIC or NCUA up to $250,000 held by the same owner or owners. The CFPB adds that these accounts tend to pay higher rates than other savings accounts, usually limit the number of transactions by check, debit card, or electronic transfer, and might require a minimum deposit.
Money market funds: an investment, not a deposit
A money market fund is a mutual fund. Per FINRA, it invests in short-term, highly liquid debt such as Treasury bills, commercial paper, bankers' acceptances, and CDs. A retail fund is managed to keep its net asset value at $1 per share. Funds are not FDIC insured. At a brokerage they're covered by SIPC up to $500,000, which protects against the loss of assets if the firm fails, not against investment losses. FINRA points to the Reserve Primary Fund, which "broke the buck" in 2008 when Lehman Brothers collapsed. A fund that holds mostly government securities carries a different risk profile than a prime fund that mainly buys corporate debt.
Money market funds often show up as the default or optional place for uninvested cash. Our piece on brokerage cash sweep rates covers how bank-deposit sweeps and fund sweeps differ in protection.
How the rates compare
Per the FDIC's National Rates and Rate Caps page, dated September 21, 2026 and reflecting rates available on the last business day of August 2026, the national rate was 0.63% for money market accounts and 0.37% for savings accounts. These are national figures, and online accounts advertising "high-yield" rates often sit well above them. Money market funds report a yield rather than an APY, so the two numbers aren't calculated the same way. For how APY is defined, see APY vs. APR explained. Banks also set deposit rates on their own schedule after Fed moves, as we noted in our coverage of the September 2026 Fed decision.
Questions to ask before choosing
- Is it a deposit or an investment? Look for FDIC or NCUA language on the account disclosure.
- What's the APY and is it promotional? The institution's own disclosure is the source of truth.
- Are there transaction limits, minimums, or fees? Check the fee schedule.
- How much do you hold at one institution? Balances above $250,000 per owner and ownership category exceed standard insurance.
What this isn't
This explains how three products are defined and protected. It isn't a recommendation of any account or fund, and which fits depends on your balance, timeline, and risk tolerance. Rates and terms change; confirm them with the institution.
Frequently asked
Is a money market account the same as a money market fund?
No. Per the CFPB, a money market account is a deposit account offered by banks and credit unions, insured by the FDIC or NCUA up to $250,000 held by the same owner or owners. A money market mutual fund, per the CFPB, is considered an investment rather than a savings or checking account. FINRA notes money market funds lack FDIC protection, though they receive SIPC coverage up to $500,000 at brokerage firms. SIPC protects against the loss of assets if a brokerage fails; it doesn't protect against investment losses.
What is the difference between a high-yield savings account and a money market account?
Both are bank deposit accounts with the same FDIC or NCUA insurance limit. The CFPB says money market accounts usually limit the number of transactions you can make by check, debit card, or electronic transfer, and might require a minimum deposit. Terms vary by institution, so the account's own fee schedule and disclosures are the source for limits, minimums, and the APY.
Do money market accounts pay more than savings accounts?
On average, yes, by a modest margin. Per the FDIC's National Rates and Rate Caps page (dated September 21, 2026, reflecting rates available on the last business day of August 2026), the national rate was 0.63% for money market accounts and 0.37% for savings accounts. Those are national averages across institutions; individual accounts, particularly online high-yield accounts, can differ widely from them.
Can you lose money in a money market fund?
Yes, it's possible. Money market funds aren't FDIC insured, and FINRA notes that all investments carry risk. It cites 2008, when the Reserve Primary Fund "broke the buck" after Lehman Brothers collapsed. FINRA also says a retail money market fund is managed to keep its net asset value stable at $1 per share, which is a management goal rather than a guarantee.
What does a money market fund invest in?
Per FINRA, money market funds invest in a portfolio of short-term, highly liquid debt such as Treasury bills, commercial paper, bankers' acceptances, and certificates of deposit. FINRA distinguishes funds that focus primarily on federal government securities from prime funds, which mainly buy corporate debt, plus tax-exempt varieties.
Sources
The named, dated public references below back the points made above. Rules and guidance change; confirm the current version with the source before you rely on it.
- Consumer Financial Protection Bureau — What is a money market account?
- Consumer Financial Protection Bureau — What is a money market account? — Consumer Financial Protection Bureau
- FINRA — Taking a Look at Money Market Funds — Financial Industry Regulatory Authority
- FDIC — National Rates and Rate Caps — Federal Deposit Insurance Corporation
The standard behind this
Everything here traces back to one published editorial standard — how we source, score, and disclose across the family.
Get an email when we publish new guide coverage.
We're building out the guide shelf. We'll email you the moment new coverage lands — no checking back.
More on guide
- I Bond rate, November 2026: a 1.40% fixed rate and 5.51% composite — what changed
Treasury reset the I bond rate on November 1, 2026: a 1.40% fixed rate and a 5.51% composite rate, up from 0.90% and 4.26%. Here is how the formula produces that number and which part stays with you.
- 401(k) Contribution Limits for 2026: The $24,500 Limit, Catch-Ups and the New Roth Catch-Up Rule
The IRS sets the 2026 401(k) employee contribution limit at $24,500. Workers 50 and older can add $8,000, and those aged 60 to 63 can add $11,250 instead, if their plan allows it.
- Roth IRA vs. Traditional IRA in 2026: IRS Limits, Income Ranges and Key Differences
For 2026 the IRS sets the IRA contribution limit at $7,500 ($8,600 if you are 50 or older), shared across all your Roth and traditional IRAs. The two types differ in when you pay tax and who can contribute.