If you are looking for the best index funds for beginners, the good news is that the right choice is usually the simple one. Index funds let you own a whole slice of the market in a single, low-cost investment — no stock-picking required. This guide covers what makes a great beginner index fund, popular low-cost options by category, and exactly how to buy your first one.
Key Takeaways
- The best beginner index funds are broad, diversified and low-cost (look for an expense ratio near 0.03% or less).
- A single S&P 500 or total US market fund is enough to start for most people.
- Index funds and index ETFs are nearly identical — pick whichever your broker makes easiest.
- You can start with as little as $1 using fractional shares.
- They still carry market risk and can fall in downturns.
What Makes a Good Index Fund for Beginners?
Before comparing specific funds, know what actually matters. New to the concept? Start with what an index fund is. The traits of a great beginner fund are:
- Low expense ratio. Since index funds tracking the same index perform almost identically, the cheaper one wins. Aim for ~0.03% or less.
- Broad diversification. A fund holding hundreds or thousands of companies spreads your risk.
- No or low minimum. Many funds and all ETFs let you start small, especially with fractional shares.
- A major, reputable provider such as Vanguard, Fidelity, Schwab or iShares.
Best Index Funds for Beginners by Category
These are popular, widely held, low-cost options grouped by what they track. Confirm current fees on each provider’s site before buying.
1. S&P 500 index funds (the classic starting point)
These track 500 large US companies — a simple, proven core holding. Popular picks include VOO (Vanguard S&P 500 ETF), FXAIX (Fidelity 500 Index Fund) and SWPPX (Schwab S&P 500 Index Fund). For the full walkthrough, see how to invest in the S&P 500.
2. Total US stock market funds (even broader)
These add mid- and small-cap companies on top of the large caps, so you own essentially the entire US market in one fund. Popular options: VTI (Vanguard Total Stock Market ETF), FSKAX (Fidelity Total Market Index) and FZROX (Fidelity’s zero-expense-ratio total market fund).
3. Total international funds (for global diversification)
To own companies outside the US, a total international fund such as VXUS (Vanguard Total International Stock ETF) adds thousands of foreign companies. Optional for a beginner, but useful for broader diversification.
4. Total bond funds (to add stability)
Bonds cushion your portfolio during stock downturns. A common choice is BND (Vanguard Total Bond Market ETF). Younger investors often hold little or no bonds; those closer to needing the money hold more.
| Fund (ticker) | Tracks | Approx. expense ratio |
|---|---|---|
| Vanguard S&P 500 (VOO) | 500 large US companies | ~0.03% |
| Fidelity 500 Index (FXAIX) | 500 large US companies | ~0.015% |
| Vanguard Total Stock Market (VTI) | Entire US market | ~0.03% |
| Fidelity ZERO Total Market (FZROX) | Entire US market | 0.00% |
| Vanguard Total International (VXUS) | Non-US companies | ~0.05% |
| Vanguard Total Bond (BND) | US bonds | ~0.03% |
How Many Index Funds Do You Actually Need?
Fewer than you think. Two simple, well-regarded approaches:
- One-fund start: a single S&P 500 or total US market fund. Simple and effective for a beginner.
- Three-fund portfolio: a total US market fund + a total international fund + a total bond fund. A classic, diversified setup you can grow into.
Starting with one fund and adding others later is perfectly fine — consistency matters more than complexity.
How to Buy an Index Fund (Step by Step)
- Open a brokerage account at a low-cost provider — see the best brokerage accounts for beginners and best free investing apps.
- Fund your account from your bank.
- Search the ticker (e.g. VOO or VTI) and choose a dollar amount or number of shares.
- Place the order and set up an automatic monthly contribution. New to ETFs? Read how to invest in ETFs for beginners.
Frequently Asked Questions
What is the best index fund for a beginner?
For most beginners, a single low-cost S&P 500 or total US market fund (such as VOO, FXAIX or VTI) is an excellent, simple starting point. The “best” one is largely the cheapest broad fund your broker offers.
Are index funds and index ETFs the same?
Almost. Both track an index at very low cost. ETFs trade like stocks throughout the day (great for fractional buying); index mutual funds price once daily (great for automatic investing).
How much do I need to start?
With fractional shares, as little as $1. Some mutual funds have small minimums, but many now have none.
Are index funds safe?
They are diversified but still carry market risk — they fall when markets fall. They suit long-term investors who can ride out the ups and downs.
Do I need international and bond funds too?
Not to start. Many beginners begin with one US fund and add international and bond funds later as they learn and their goals become clearer.
The Bottom Line
The best index funds for beginners are broad, diversified and cheap — and you only need one to start. Pick a low-cost S&P 500 or total US market fund, buy it through a low-cost broker, automate a monthly contribution, and let compounding work over the years. Keep it simple, keep fees low, and stay consistent. Next, open your account with our best brokerage accounts guide.
This article is for educational purposes only and does not constitute financial or investment advice. Fund names and fees are examples only, not recommendations — confirm current details on each provider’s official site and do your own research before investing. Investing involves risk, including the possible loss of your capital.
Izhaq Shah is the founder of GetIntoMarkets. He holds a Master’s in Finance and Commerce, with over 10 years in the financial industry and 15 years of writing experience. He makes investing in stocks, ETFs and crypto simple and practical for everyday people building wealth with confidence.