The best money market funds for retail savers in 2026 are low-cost government funds such as Vanguard’s VMFXX and Schwab’s SWVXX, both paying yields near 3.5% with minimal fees and same-day access. Your right choice still depends on your brokerage, tax bracket, and how soon you need the cash.
By Claire Hamilton · Reviewed for accuracy by the Finance Fundamentals editorial team
This article is educational information for U.S. readers, not personalized financial or tax advice. Fund yields, fees, and minimums change often, sometimes month to month, so confirm current numbers directly with the fund provider or your brokerage before you act. A financial or tax professional can weigh your specific situation in a way a blog post cannot.
What You’re Really Asking
“What’s the best money market fund” isn’t quite the right question. The sharper version is this: which fund pays the highest yield after fees, without forcing you to accept more risk or less access to your cash than you’re comfortable with?
That distinction matters more than most comparison charts let on. A fund can advertise an eye-catching yield and still be the wrong fit. It might be a prime fund carrying credit risk you didn’t sign up for, or sit at a brokerage that buries the better option behind a phone call.
Retail investors also tend to ask the question too late. Cash sits in a brokerage’s default sweep account for years, earning a fraction of what a taxable money market fund pays two clicks away.
How We’re Scoring These Funds
Every fund below gets judged on five things: current 7-day yield, expense ratio, minimum investment, underlying holdings, and how easy the fund is to actually buy.
Yield matters least on its own. A fund yielding a tenth of a point more than a rival isn’t automatically better. It might take on commercial paper risk to get there, or its expense ratio might be a temporary waiver that expires next quarter.
We leaned on each provider’s own published figures and cross-checked them against independent trackers, dated below so you can judge how current they still are.
| Type | Typical Holdings | Relative Risk | Tax Treatment |
|---|---|---|---|
| Government | Treasuries, agency debt, repurchase agreements | Lowest | Federal and state taxable |
| Treasury-only | U.S. Treasury securities only | Lowest | Federal taxable, state-exempt |
| Prime | Commercial paper, CDs, Treasuries, repo | Slightly higher | Federal and state taxable |
| Municipal | Short-term municipal debt | Low, market-dependent | Federal-exempt, often state-exempt |
At a Glance: Where This Lands
- Top pick overall: Vanguard Federal Money Market Fund (VMFXX) — lowest cost, government-only holdings
- Best with no minimum: Schwab Value Advantage Money Fund (SWVXX)
- Best if you’re already at Fidelity: Fidelity Government Money Market Fund (SPAXX) or the higher-yielding SPRXX
- Best for treasury-only holdings: T. Rowe Price U.S. Treasury Money Fund (PRTXX)
- Best for high tax brackets: Vanguard Municipal Money Market Fund (VMSXX)
The Six Funds, Side by Side
Here’s how six widely available funds compare on the numbers that matter most, pulled from each provider’s own published data.
| Fund | Type | 7-Day Yield | Expense Ratio | Minimum |
|---|---|---|---|---|
| Vanguard Federal MMF (VMFXX) | Government | 3.56% | 0.11% | $3,000 |
| Schwab Value Advantage (SWVXX) | Prime | 3.49% | 0.34% | None |
| Fidelity Money Market (SPRXX) | Prime | 3.33% | 0.42% | $1 |
| T. Rowe Price U.S. Treasury MF (PRTXX) | Treasury-only | 3.27% | 0.31% | $1 |
| JPMorgan Liquid Assets MM (MJLXX) | Prime | 3.27% | 0.59% | Varies |
| Fidelity Government MMF (SPAXX) | Government | ~3.24% | 0.42% | None |
Yields: Schwab Asset Management (SWVXX, Jul 24, 2026); Forbes Advisor (VMFXX, SPRXX, PRTXX, MJLXX; data as of May 29, 2026); Dividend.com (SPAXX dividend yield, Jul 24, 2026). SPAXX figure is a dividend yield rather than a standardized 7-day SEC yield, so treat it as approximate.
Where the Yield Actually Comes From
Money market fund yields track the federal funds rate closely, minus whatever the fund charges in fees. The Federal Reserve reported an effective federal funds rate of 3.63% as of July 23, 2026, which is why every fund above clusters in the low-to-mid 3% range.
The Securities and Exchange Commission also rewrote money market fund rules in 2023, adding swing pricing and discretionary liquidity fees for institutional prime and tax-exempt funds during periods of heavy redemptions.
Retail funds like the ones in this comparison were exempted from the toughest new provisions. The reform is still part of why providers now disclose weekly liquid assets more clearly than they did a decade ago.
Compare any of them against a typical bank savings account and the gap is stark.
7-Day Yields: Six Money Market Funds vs. the Average Savings Account.
| VMFXX (Vanguard) | 3.56% | |
| SWVXX (Schwab) | 3.49% | |
| SPRXX (Fidelity) | 3.33% | |
| PRTXX (T. Rowe Price) | 3.27% | |
| MJLXX (JPMorgan) | 3.27% | |
| SPAXX (Fidelity) | 3.24% | |
| VMSXX (municipal, pre-tax) | 2.41% | |
| Avg. savings account | 0.38% |
Sources: Schwab Asset Management (SWVXX, Jul 24, 2026); Forbes Advisor (VMFXX, SPRXX, PRTXX, MJLXX; data May 29, 2026); Dividend.com (SPAXX, Jul 24, 2026); Vanguard fund fact sheet (VMSXX 7-day SEC yield, Mar 31, 2026, shown before tax adjustment); The Motley Fool, citing FDIC data (national average savings rate, Jun 2026).
The Six Funds, One at a Time
Ticker symbols only tell you so much. Here’s what each fund is actually for, and where it falls short.
Vanguard Federal Money Market Fund (VMFXX)
Best for: savers who want the lowest ongoing cost and don’t mind a $3,000 minimum. Strengths: VMFXX holds almost entirely U.S. government securities and repurchase agreements, and its 0.11% expense ratio is among the lowest of any retail money market fund. Vanguard passes nearly all the underlying yield through to shareholders.
Limits: the $3,000 minimum locks out savers just starting an emergency fund, and it’s most convenient if you already hold a Vanguard brokerage account. Cost: 0.11% expense ratio, with a 7-day yield of 3.56% as of May 29, 2026, per Forbes Advisor. Verdict: this is the fund most retail savers should default to once they clear the minimum. It’s about as close to boring-and-correct as money market funds get.
Schwab Value Advantage Money Fund (SWVXX)
Best for: anyone who wants a strong yield with no minimum investment at all. Strengths: no minimum, a 7-day yield of 3.49% as of July 24, 2026 per Schwab’s own disclosure, and same-day settlement inside a Schwab brokerage account.
Limits: SWVXX is a prime fund, not a pure government fund, so it holds commercial paper and CDs alongside Treasuries and repo, adding a sliver more credit risk than VMFXX. Cost: 0.34% expense ratio, roughly three times VMFXX’s. Verdict: a solid choice if you’re already at Schwab, though it isn’t the fund Schwab automatically puts your cash into — you still have to ask for it.
Fidelity Government Money Market Fund (SPAXX) and Fidelity Money Market Fund (SPRXX)
Best for: Fidelity account holders choosing between the automatic option and the better one. SPAXX is Fidelity’s default core position for brokerage and retirement accounts, and most Fidelity customers hold it without ever choosing it. SPRXX is a separate, actively selected prime fund that has recently paid a noticeably higher yield.
Limits: SPAXX’s 0.42% expense ratio is high for a government fund, and its yield trailed SPRXX’s by roughly nine hundredths of a point as of late July 2026. Cost: 0.42% expense ratio on both funds, so the gap is entirely in the yield, not the fee. Verdict: if you bank with Fidelity, check whether your cash is still sitting in SPAXX by default and move it to SPRXX if the yield gap holds. It takes about five minutes.
T. Rowe Price U.S. Treasury Money Fund (PRTXX)
Best for: savers in high state-income-tax states who want to avoid credit risk entirely. Strengths: PRTXX invests only in U.S. Treasury securities, so its income is exempt from state and local income tax, a real edge in California, New York, or any other high-tax state.
Limits: the state exemption only helps if your state taxes interest income meaningfully to begin with; in states with no income tax, it’s a non-factor. Cost: 0.31% expense ratio, with a 7-day yield of 3.27% as of May 29, 2026, per Forbes Advisor. Verdict: a solid, conservative pick. Check your own state’s tax treatment before assuming it beats a cheaper government fund after tax.
JPMorgan Liquid Assets Money Market Fund (MJLXX)
Best for: investors who already hold it through an advisor relationship, not a starting point for new savers. Strengths: broad, institutional-style diversification across commercial paper, CDs, and government paper, backed by a major asset manager’s scale.
Limits: a 0.59% expense ratio is high for the category, and its 3.27% yield as of May 2026 matched cheaper funds like PRTXX. Paying nearly double the fee for an identical yield is not a good trade. Verdict: skip it if you’re opening a new account from scratch, since there’s no yield advantage here to justify the cost.
Vanguard Municipal Money Market Fund (VMSXX)
Best for: savers in high federal tax brackets holding cash outside a retirement account. Strengths: income is exempt from federal income tax, and often from state tax too depending on the bonds the portfolio holds, so the headline yield looks lower but that’s before adjusting for taxes.
Limits: at lower tax brackets, the tax break rarely makes up for the lower stated yield. Cost: 0.11% expense ratio, with a 7-day SEC yield of 2.41% as of March 31, 2026, per Vanguard’s own fact sheet. Verdict: genuinely useful, but only above a certain tax bracket. The math is below.
Who Each Fund Is Wrong For
Every fund on this list is wrong for somebody. Matching yourself to the wrong one is probably the single most common mistake in this category.
| Fund | Wrong for… |
|---|---|
| VMFXX | Anyone with less than $3,000 to invest, or savers who don’t want a second brokerage login. |
| SWVXX | Investors who want zero credit risk and only want government-backed paper. |
| SPAXX | Anyone who could earn more elsewhere for the same effort, which is most Fidelity customers. |
| PRTXX | Residents of states with no income tax, where the state exemption is worth nothing. |
| MJLXX | New investors comparison-shopping from scratch; the fee doesn’t buy anything extra. |
| VMSXX | Savers in the 22% federal bracket or below, and anyone holding cash in a tax-deferred account, where tax-exempt income offers zero benefit. |
How to Actually Choose One
Start with three questions: how much you’re investing, what tax bracket you’re in, and which brokerage you already use. The answers usually narrow six funds down to one or two.
If you’re under a fund’s minimum, that fund is off the table immediately, no matter how good its yield looks on paper.
Moving cash between fund families usually means opening a new brokerage account first, which can take a few business days for identity verification. If you’re simply upgrading within the same brokerage, from a default sweep to a better in-house fund, the switch is usually instant and doesn’t require moving custodians at all.
Worked Example: Moving a $25,000 Emergency Fund
Say you’re holding a $25,000 emergency fund in a savings account paying the national average of 0.38% APY, tracked from FDIC data as of June 2026. That’s roughly $95 a year in interest.
Move the same $25,000 into VMFXX, yielding 3.56% as of late May 2026, and you’d earn about $890 a year instead: an extra $795 for filling out one transfer form.
That $795 gap is the easy case: same fund family of risk, same tax treatment, just a better rate. Comparing a taxable fund against a tax-exempt one takes one more step.
Worked Example: Is the Municipal Fund Actually Better?
VMSXX’s 7-day SEC yield was 2.41% as of March 31, 2026, well below VMFXX’s 3.56%. Its income is federally tax-exempt, though, so the comparison isn’t as simple as it looks.
Divide the tax-exempt yield by one minus your marginal tax rate to get the tax-equivalent yield. In the 37% federal bracket: 2.41 ÷ (1 − 0.37) = 3.83%. That beats VMFXX after tax.
Run the same formula at the 24% bracket, though, and you get 3.17%, which loses to VMFXX. The municipal fund is a real advantage near the top of the income scale and a mediocre trade almost everywhere else.
Mistakes That Cost Retail Investors Real Money
Most of the money lost to bad money market fund choices doesn’t come from picking the “wrong” fund. It comes from five habits.
- Leaving cash in the default sweep. Brokerages don’t automatically place you in their best option. They place you in whichever fund is administratively easiest for them.
- Chasing yield without checking fund type. A prime fund yielding a tenth of a point more than a government fund isn’t a bargain if a credit event ever hits commercial paper markets.
- Ignoring your own tax bracket. Buying a municipal fund on a friend’s recommendation, without checking whether your bracket benefits, is a coin flip dressed up as a strategy.
- Confusing a money market fund with a money market account. One is a mutual fund with no FDIC insurance; the other is a bank deposit account that is FDIC-insured. The SEC’s own investor materials are blunt about that difference.
- Assuming last year’s numbers still apply. A fund that looked cheap and generous a year ago might not be either today. Check the current figures, not the ones from your last statement.
What Experienced Investors Do Differently
People who’ve managed cash through a few rate cycles treat money market funds as one tool, not the whole toolbox.
They keep one to three months of expenses in the fund for true liquidity. Anything beyond that moves into short Treasury bills, brokered CDs, or a short-duration bond fund, where a small maturity mismatch buys a bit more yield.
They also recheck their brokerage’s sweep rate every few months. Fee waivers expire, promotional rates end, and a fund that was competitive in January can quietly fall behind by summer.
A few split cash across two fund types instead of picking one winner. Splitting a $50,000 balance between a government fund and a treasury-only fund doesn’t add meaningful complexity, and it hedges against any single provider’s fee change or policy shift.
Most notably, they treat the choice between a government fund and a prime fund as a real decision, not a rounding error. The extra ten or twenty basis points a prime fund pays rarely compensates for the credit risk it adds during a stressed market.
Quick Definitions
A handful of terms show up throughout this piece. Here’s what they actually mean.
- 7-day SEC yield: the fund’s income over the trailing seven days, annualized, calculated the same way across every fund so you can compare fairly.
- Expense ratio: the annual fee taken out of a fund’s returns automatically, expressed as a percentage of your investment.
- Government fund: a money market fund holding at least 99.5% of assets in cash, U.S. government securities, and collateralized repurchase agreements.
- Prime fund: a money market fund that can also hold corporate debt like commercial paper and CDs, carrying slightly more credit risk.
- Sweep account: the default cash position a brokerage assigns automatically, which isn’t always the highest-yielding option that same brokerage offers.
- NAV (net asset value): a fund’s share price. Most retail money market funds keep this pegged at a stable $1.00 instead of letting it float like an ordinary mutual fund.
Where to Go From Here
If you want to check a fund’s current numbers before moving money, go straight to the provider’s own fund page or its prospectus filed with the SEC. Numbers move monthly, sometimes weekly, and a screenshot from a search result isn’t something you should trust six months from now, including this one.
If daily liquidity and spending features matter as much as yield, a cash management account is worth comparing against a bare money market fund. It bundles debit access and bill pay around a similar cash yield, and some people find that’s simply less friction to manage.
Otherwise, the path is simple. Pick the fund type that matches your tax bracket and brokerage, confirm the current yield and fee, and move the cash that’s currently earning close to nothing.
Key Takeaways
- Government money market funds like VMFXX and SWVXX offer the best mix of yield, safety, and simplicity for most retail savers in 2026.
- Expense ratios range from 0.11% to 0.59% across near-identical yields; the fee is often the real differentiator, not the headline rate.
- Default brokerage sweep accounts are rarely a brokerage’s best available fund. Check and switch manually.
- Municipal money market funds only make sense above a certain federal tax bracket. Run the tax-equivalent yield formula before buying one.
- Treasury-only funds add a state-tax edge that matters most in high-tax states and does nothing where there’s no state income tax.
Frequently Asked Questions
What is the safest type of money market fund?
Government money market funds, which hold at least 99.5% of assets in cash, U.S. government securities, and repurchase agreements, are generally considered the safest type because they carry minimal credit risk.
Are money market funds FDIC insured?
No. Money market funds are mutual funds, not bank deposits, so they are not FDIC insured. A separate product, the bank money market deposit account, is FDIC insured up to the standard limit.
How is a money market fund different from a money market account?
A money market fund is a mutual fund that invests in short-term debt and is regulated by the SEC. A money market account, by contrast, is an interest-bearing deposit account at a bank or credit union that carries FDIC or NCUA insurance.
What’s a good 7-day yield for a money market fund right now?
As of mid-2026, retail government and prime money market funds have been yielding roughly 3.2% to 3.6%, closely tracking the effective federal funds rate, which the Federal Reserve reported at 3.63% in late July 2026.
Is it worth switching out of my brokerage’s default cash sweep?
Often, yes. Default sweep funds are frequently not the highest-yielding option a brokerage offers its own customers, so it’s worth checking whether a better fund is available with a few clicks.
Do municipal money market funds make sense for everyone?
No. They generally only beat a taxable government fund on an after-tax basis for savers in higher federal tax brackets, so it’s worth running the tax-equivalent yield calculation for your own bracket first.
References
- Schwab Asset Management, Schwab Value Advantage Money Fund (SWVXX) product page, accessed July 24, 2026.
- Forbes Advisor, “The Best Money Market Mutual Funds,” fund data as of May 29, 2026.
- Dividend.com, Fidelity Government Money Market Fund (SPAXX) profile, accessed July 24, 2026.
- Vanguard, Vanguard Municipal Money Market Fund fact sheet, dated March 31, 2026.
- Board of Governors of the Federal Reserve System, H.15 Selected Interest Rates release, data through July 23, 2026.
- U.S. Securities and Exchange Commission, Investor.gov, “Money Market Funds” investor bulletin.
- U.S. Securities and Exchange Commission, Money Market Fund Reforms, Release No. 33-11211, 2023.
- The Motley Fool, national average savings account interest rate report citing FDIC data, June 2026.
- Charles Schwab, Schwab Intelligent Portfolios sweep program current interest rate disclosure, effective June 1, 2026.
