The old advice that you needed hundreds or thousands of dollars to start investing simply isn’t true anymore. Fractional shares mean you can put $5, $10, or $50 into a diversified fund today, and the ETFs worth choosing at that scale are the same low-cost, broadly diversified funds an experienced investor would hold for decades — there’s no “beginner tier” of worse products you’re stuck with until you save more.
Quick Verdict
| Category | Winner |
|---|---|
| Best single-fund starting point | VOO or VTI (Vanguard S&P 500 / Total Market) |
| Best broker for fractional shares | Fidelity ($1 minimum, 7,000+ stocks and ETFs) |
| Best if you want zero decisions | A single all-in-one allocation fund (e.g., AOR) |
| Best 3-fund starter portfolio | VTI + VXUS + BND |
| Lowest cost core holding | VOO or VTI, both around 0.03% |
You Genuinely Don’t Need Much Money
Fractional shares have removed the old barrier entirely. Fidelity, Schwab, Robinhood, and several other major brokers now let you buy a fractional share of any ETF for as little as $1, meaning a $2,000+ share price for something like Berkshire Hathaway, or even a $500+ ETF share, no longer locks out a small investor. The more relevant question isn’t “can I afford this,” but “is $50-100 enough to build meaningful diversification” — and with a single broad-market ETF, the answer is yes, since one share (or fraction of one) already gives you exposure to hundreds or thousands of underlying companies.
The Simplest Starting Point: One Fund
For a true beginner starting with a small amount, a single core holding is entirely sufficient to start:
- VOO (Vanguard S&P 500 ETF): 0.03% expense ratio, tracks the 500 largest U.S. companies. In 2026, VOO became the first ETF to reach $1 trillion in assets — a reflection of how widely trusted it is as a default starting point.
- VTI (Vanguard Total Stock Market ETF): Also 0.03%, but broader — roughly 3,700 U.S. stocks including mid- and small-cap companies alongside the large caps VOO holds.
The practical difference between the two is small enough that either is a reasonable single-fund starting point. You don’t need to hold both; they overlap heavily.
Building Beyond One Fund: The Classic Three-Fund Approach
Once you’re contributing regularly and want fuller diversification, the commonly recommended next step is a three-fund portfolio:
- VTI — U.S. total market
- VXUS — international stocks (developed and emerging markets)
- BND — U.S. investment-grade bonds
Together, these three funds cover most of the global investable market in one simple, low-maintenance combination. How much to allocate to each — particularly the bond portion — depends on your time horizon and risk tolerance, with younger investors typically holding a smaller bond allocation than someone closer to retirement.
Where to Buy: Broker Matters More Than You’d Think
Since the funds themselves cost roughly the same everywhere, the broker’s fractional-share policy determines how accessible investing actually is with a small amount:
| Broker | Fractional share minimum | Notable feature |
|---|---|---|
| Fidelity | $1 | 7,000+ eligible stocks and ETFs, no account minimum |
| Charles Schwab | $1 (Stock Slices for $5) | Stock Slices lets you buy into any S&P 500 company from one trade ticket |
| Robinhood | $1 | Simple interface, no account minimum |
| Interactive Brokers | $0.01 | 10,500+ eligible securities, best for later when you want broader access |
For a true beginner, Fidelity or Schwab’s combination of no account minimum, $1 fractional shares, and zero commissions removes essentially every financial barrier to starting.
A Word on Retirement Accounts vs. Taxable Accounts
If you’re deciding where to hold your first ETF purchase, a Roth IRA is usually the better starting point over a standard taxable brokerage account, since qualified withdrawals in retirement are entirely tax-free — the trade-off is the 2026 annual contribution limit of $7,500. For a beginner investing small, regular amounts, that limit is unlikely to be a real constraint for years, making a Roth IRA funded with VOO or VTI one of the simplest, most tax-efficient combinations available to a new investor.
Which One Should You Choose?
For a genuine beginner starting with a small amount, a single broad-market fund like VOO or VTI, purchased as a fractional share inside a Roth IRA, is enough to begin — there’s no need to overcomplicate a first purchase with multiple funds. As your contributions grow and you want fuller global and fixed-income diversification, adding VXUS and BND rounds out a complete, low-cost portfolio without requiring more than three total holdings.
Disclosure: This article is for educational purposes only and does not constitute financial or investment advice. We are not licensed financial advisors. Expense ratios and fund data reflect publicly available information as of 2026 and are subject to change — verify current figures directly with each fund provider before investing. Some links on this page may be affiliate links.
Last reviewed: July 2026.