VTI vs. VOO: Which Index ETF Is Better for Early Retirement?

For early retirement, VTI and VOO are both excellent, and the choice matters far less than how much you invest. Both charge 0.03% a year. VTI (Vanguard Total Stock Market ETF) holds the whole investable U.S. stock market, about 3,500 companies of every size. VOO (Vanguard S&P 500 ETF) holds the roughly 500 large companies in the S&P 500. Because the S&P 500 makes up most of the U.S. market’s value, the two funds move almost in lockstep. Pick VTI if you want the whole market including small companies, VOO if you prefer large caps only. Then stop worrying about it.

Here’s how they differ, what that means for a FIRE portfolio, and one situation where owning both makes sense.

VTI vs. VOO at a glance #

From Vanguard’s fact sheets as of June 30, 2026:

The expense ratio is the same, so cost isn’t a tiebreaker. At 0.03%, you pay $3 a year per $10,000 invested with either fund.

How much do they overlap? #

A lot. Both funds weight companies by market value, so the largest companies dominate both. The S&P 500 accounts for most of the value of the U.S. market, commonly estimated at around 80%. Owning VTI is roughly like owning VOO plus a smaller slice of mid- and small-cap companies.

That’s why their returns track so closely. In years when large companies lead, VOO edges ahead. In years when smaller companies lead, VTI does. Over long periods the differences have been small, and nobody knows which segment will lead next.

The case for VTI #

• You own everything. No committee decides what’s in the index. If a small company becomes a giant, you owned it on the way up. Tesla, for example, joined the S&P 500 only in December 2020, after years of huge growth that VTI holders already had.
• Broader diversification. Around 3,000 more companies, including small caps, which have sometimes led for long stretches.
• It’s the standard “total market” building block of the Boglehead three-fund portfolio.

The case for VOO #

• Large, established companies only. S&P 500 companies must meet size, liquidity and profitability requirements (positive earnings over the latest four quarters) to be added. Some investors like that screen.
• A familiar benchmark. The S&P 500 is the index most people quote, which makes it easy to compare results.
• Slightly less exposure to small, volatile companies, though in a real crash both funds fall by similar amounts.

Does it matter in the withdrawal phase? #

Less than people expect. Once you retire and start selling shares, the risk that matters is a crash early in retirement, and VTI and VOO are both 100% U.S. stocks, so they share that risk almost equally. What protects you is your overall mix (bonds, cash, international stocks) and a flexible withdrawal plan, not the choice between these two funds.

Dividends are similar too. Both pay quarterly, their yields are close, and VOO’s is typically a touch higher, since large companies pay out a bit more. Neither is designed as an income fund, and for most early retirees the difference in yield won’t change a plan.

Taxes: both are very efficient #

As ETFs, both rarely distribute capital gains, and almost all of their dividends are usually qualified, taxed at 0%, 15% or 20% rather than ordinary income rates. Either works well in a taxable brokerage account. Our guide to dividend tax drag explains why ETFs suit taxable accounts, and index funds vs. ETFs covers the mutual fund versions (VTSAX and VFIAX).

When owning both makes sense #

Holding both at once is mostly redundant. It just tilts you toward large caps. The common exception is tax-loss harvesting in a taxable account. If VTI falls below what you paid, you can sell it to realize the loss and buy VOO the same day to stay invested. Because they track different indexes, many investors treat them as not “substantially identical” for the wash-sale rule. The IRS hasn’t defined that term precisely, so some people use a more clearly different pair for extra caution.

What matters more than VTI vs. VOO #

• Your savings rate. It decides your retirement date far more than a fund choice.
• International stocks. Both funds are U.S.-only. Many FIRE investors add a total international fund. See the three-fund portfolio guide.
• Your bond and cash mix, especially in the years around retirement.
• The return you assume in projections. Historical U.S. stock returns have averaged about 6.8% a year after inflation since 1928, but many planners use less. See what S&P 500 return to use for retirement planning.

In Retire Goals, S&P 500 and Index Fund goal templates come with sensible market-return defaults you can adjust, and each goal shows a projected finish date plus the odds of reaching your target. The app doesn’t hold or trade anything. You log what you invest. If you add a free API key you control, the dashboard shows live S&P 500 performance.

Frequently asked questions #

Can I hold both VTI and VOO? #

You can, but it mostly just overweights large companies, since VOO’s holdings are already the biggest part of VTI. Pick one for simplicity. The common reason to own both is swapping between them for tax-loss harvesting.

Which is more tax-efficient, VTI or VOO? #

Both are extremely tax-efficient. As broad index ETFs, they rarely distribute capital gains, and their dividends are mostly qualified. Either fits well in a taxable account.

Which is better for Coast FIRE? #

Neither is meaningfully better. Coast FIRE depends on long-term growth, and the two funds have had very similar long-run returns. Use a conservative real return in your projections, whichever you choose.

Do VTI and VOO have the same expense ratio? #

Yes. Both listed 0.03% as of June 30, 2026, per Vanguard. At that level the fee is almost negligible, costing $3 a year per $10,000 invested.