VTSAX vs VTI: Mutual Fund vs ETF — Which Should You Choose? (2026)
VTSAX and VTI are actually the same underlying Vanguard Total Stock Market fund — but packaged differently. VTSAX is the mutual fund version; VTI is the ETF version. Despite their near-identical investment exposure, there are real practical differences that affect which one is right for your situation.
VTSAX vs VTI: Side-by-Side Comparison
| Metric | VTSAX (Mutual Fund) | VTI (ETF) |
|---|---|---|
| Fund Type | Mutual Fund | ETF |
| Underlying Index | CRSP U.S. Total Market Index (same) | |
| Expense Ratio | 0.04% | 0.03% |
| Minimum Investment | $3,000 | ~$280 (1 share) |
| Trading Hours | Once/day (end of day NAV) | All day (like a stock) |
| Automatic Investing | Easy (any dollar amount) | Whole shares only (unless broker supports fractional) |
| 10-Year Return | 15.41% | 15.24% |
| Convert Between? | Yes — VTSAX → VTI (one-way, tax-free at Vanguard) | |
The Unusual Truth: They're the Same Fund
VTSAX and VTI are literally the same fund, just different share classes. Thanks to Vanguard's patented (now expired) ETF share class structure, VTI is simply an ETF version of the VTSAX mutual fund. Both invest in the same portfolio of stocks, managed by the same team.
Given this, the choice comes down almost entirely to practical considerations: which brokerage you use, how much you have to invest, and how you prefer to invest.
Automatic Investing & Dollar-Cost Averaging
VTSAX wins for automatic investing. As a mutual fund, VTSAX allows you to invest any dollar amount — including fractional amounts — on an automatic schedule.
VTI, as an ETF, must be purchased in whole shares. If VTI is trading at $280, you can only buy in $280 increments. Some brokerages — including Fidelity and Schwab — now support fractional ETF shares, which largely eliminates this disadvantage.
The Tax-Free Conversion Option
Vanguard allows you to convert VTSAX shares to VTI shares tax-free directly within your Vanguard account. This one-way conversion (VTSAX → VTI, not VTI → VTSAX) can be useful if you want to later transfer your account to another brokerage.
VTSAX vs VTI: Which Should You Choose?
Choose VTSAX if you…
- ✅ Want easy automatic investing with any dollar amount
- ✅ Invest primarily at Vanguard
- ✅ Have $3,000+ to meet the minimum
- ✅ Prefer mutual fund simplicity over intraday trading
Choose VTI if you…
- ✅ Invest at a brokerage other than Vanguard
- ✅ Don't have $3,000 for VTSAX's minimum
- ✅ Want the slightly lower 0.03% expense ratio
- ✅ Want intraday trading flexibility
You truly cannot go wrong. These are the same assets wrapped differently.
Frequently Asked Questions
What is the difference between VTSAX and VTI?
VTSAX is a mutual fund and VTI is an ETF, but both are share classes of the same underlying Vanguard Total Stock Market fund. VTI has a slightly lower expense ratio (0.03% vs 0.04%), no minimum investment, and trades throughout the day. VTSAX requires $3,000 minimum and trades once daily.
Which has better returns: VTSAX or VTI?
Returns are nearly identical (15.41% vs 15.24% annualized over 10 years). Both track the same index with the same portfolio of stocks.
Is VTI or VTSAX better for taxable accounts?
Both are excellent. VTSAX benefits from VTI's ETF share class and has not distributed capital gains since 2000. The difference in taxable accounts between these two specific funds is minimal.
Can I convert VTSAX to VTI without taxes?
Yes! Vanguard allows a one-way, tax-free conversion from VTSAX to VTI within your Vanguard account. The conversion is one-way only.
Is VTSAX or VTI better for automatic investing?
VTSAX is better since you can invest any dollar amount, including fractions. VTI must be purchased in whole shares unless your brokerage supports fractional ETF shares.
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