VUSXX Fidelity Equivalent: Best Alternatives and How to Invest in 2025

VUSXX Fidelity is a common search phrase among investors looking for low-risk, short-term investment options on the Fidelity platform. While VUSXX refers to the Vanguard Treasury Money Market Fund—a popular choice for cash preservation and federal tax efficiency.

But if you’re a Fidelity client, you may be wondering:

Can you buy VUSXX on Fidelity?

And if not, what is the Fidelity equivalent of VUSXX?

This article explores the differences, options, and strategies surrounding VUSXX vs Fidelity, helping you make the best cash-management decision in 2025.

What Is VUSXX?

VUSXX stands for the Vanguard Treasury Money Market Fund (Investor Shares). It is a U.S. government money market mutual fund designed to:

• Invest 100% in short-term U.S. Treasury bills, notes, and repurchase agreements

• Maintain a stable $1.00 net asset value (NAV)

• Offer federal income tax exemption on interest income (but not state or local tax-exempt)

As of May 2025, VUSXX offers the following profile:

Metric	Value
Fund Family	Vanguard
Category	U.S. Treasury Money Market
Net Asset Value (NAV)	$1.00
7-Day SEC Yield	4.87% (as of May 1, 2025)
Expense Ratio	0.09%
Tax Treatment	Interest is exempt from federal income tax; subject to state/local taxes

You can view real-time fund data directly from Vanguard’s official fund page.

Can You Buy VUSXX on Fidelity?

No, VUSXX is not available for direct purchase on Fidelity’s brokerage platform. It is a proprietary Vanguard mutual fund and can typically only be purchased directly through Vanguard accounts or select third-party custodians that offer Vanguard funds.

However, Fidelity offers several in-house money market funds that serve similar purposes.

Fidelity VUSXX Equivalent: Top Alternatives

If you’re searching for the Fidelity equivalent of VUSXX, these are the most comparable funds based on strategy, risk level, and yield:

Fidelity Treasury Only Money Market Fund (FDLXX)

Metric	Value (May 2025)
Category	U.S. Treasury Money Market
SEC Yield	4.85%
Expense Ratio	0.42%
Minimum Investment	$0
Tax Benefit	Exempt from state taxes (like VUSXX)

✅ Best Match for VUSXX
FDLXX is the closest Fidelity equivalent to VUSXX. It invests exclusively in U.S. Treasuries and repurchase agreements backed by Treasuries. While its expense ratio is higher, the yield is nearly identical in 2025.

Fidelity Government Money Market Fund (SPAXX)

Metric	Value (May 2025)
Category	Government Money Market
SEC Yield	4.66%
Expense Ratio	0.42%
Holdings	Government agency debt + U.S. Treasuries

✅ Default Sweep Account for Fidelity
SPAXX is a popular core position in many Fidelity accounts and offers high liquidity. It is slightly broader in scope than VUSXX, investing in both U.S. Treasuries and government agencies like Fannie Mae or Freddie Mac.

Fidelity Treasury Money Market Fund (FZFXX)

Metric	Value
SEC Yield	4.84%
Expense Ratio	0.42%
Holdings	100% U.S. Treasury securities

✅ Low-risk Treasury focus with strong yield
FZFXX mirrors VUSXX in objective and structure but is only available to retail investors with eligible Fidelity brokerage accounts.

VUSXX vs Fidelity: Side-by-Side Comparison

Feature	VUSXX (Vanguard)	FDLXX (Fidelity)
Fund Type	Treasury Money Market	Treasury Money Market
SEC Yield (May 2025)	4.87%	4.85%
Expense Ratio	0.09%	0.42%
Federal Tax Exempt	Yes	Yes
State Tax Exempt	Mostly No	Mostly Yes
Available on Fidelity?	No	Yes

While VUSXX offers the lowest fees, Fidelity’s FDLXX or FZFXX are strong alternatives, particularly if you already use Fidelity for brokerage or retirement accounts.

How to Buy the Fidelity Equivalent of VUSXX

To invest in a VUSXX Fidelity equivalent, follow these steps:

Step 1 – Open or log in to your Fidelity account

Step 2 – Search for FDLXX, FZFXX, or SPAXX

• Compare yield, minimums, and tax treatment.

• All are available without trading commissions.

Step 3 – Place a mutual fund order

• Select the amount and frequency (e.g., one-time or recurring).

• Funds typically settle the same day.

Step 4 – Monitor performance and reinvest dividends

• Reinvestment allows you to compound yield over time.

Tax Implications: VUSXX vs Fidelity Funds

One of the key benefits of VUSXX and its Fidelity equivalents is that the income they generate is generally exempt from state and local taxes if the fund holds only U.S. Treasuries.

Tax Category	VUSXX	FDLXX	FZFXX
Federal Tax	Taxable	Taxable	Taxable
State Tax	Mostly Taxable	Exempt	Exempt

Pro tip: Always check the fund’s official state tax-exempt breakdown, which may vary year-to-year.

Use Cases for VUSXX and Its Equivalents

These funds are ideal for:

• Parking large cash balances temporarily

• Funding near-term expenses

• Retirement income preservation

• Tax-optimized savings (especially in high-tax states)

They’re not designed for aggressive growth, but for capital preservation and interest income with low risk.

Frequently Asked Questions (FAQ)

Q1. Can you buy VUSXX on Fidelity?

No. VUSXX is only available through Vanguard or custodians that carry Vanguard mutual funds. Fidelity clients can’t buy it directly.

Q2. What is the Fidelity equivalent of VUSXX?

FDLXX and FZFXX are Fidelity’s closest alternatives. Both focus on U.S. Treasury securities and offer similar yields.

Q3. Is SPAXX the same as VUSXX?

No. SPAXX includes both Treasuries and government agency debt. It’s slightly broader and may carry slightly different state tax implications.

Q4. Is the yield on VUSXX better than Fidelity funds?

VUSXX currently has a slightly higher yield (4.87% vs. FDLXX’s 4.85%) and a lower expense ratio. But the difference may not be material depending on account size and preferences.

Q5. Are these funds safe?

Yes. They’re among the safest options in the mutual fund universe, investing in short-term government debt and maintaining a stable $1 NAV.

Final Thoughts

If you’re a Fidelity investor looking for a safe, short-term investment option similar to VUSXX, you’re not out of luck. While you can’t buy VUSXX directly on Fidelity, there are strong in-house equivalents like FDLXX, FZFXX, and SPAXX that offer comparable safety and income potential.

Understanding the differences in tax treatment, expense ratios, and fund composition will help you make the right decision based on your portfolio goals.

Disclaimer

VUSXX.com is an independent financial education website and is not affiliated with Vanguard or Fidelity. The content provided here is for informational purposes only and does not constitute financial advice. Please consult with a licensed financial advisor before making investment decisions related to VUSXX or any Fidelity equivalent.