How to Invest in index funds (2024)

In the quarter century they’ve been around, index funds have made investment easy, efficient, and cost-effective. Here’s what you need to know about how they work and how to start investing with this popular fund choice.

Index funds are mutual funds or exchange-traded funds (ETFs) that hold investments, typically stocks or bonds, tied to an index—hence the name—such as the Dow Jones Industrial Average (DJIA) or S&P 500. Index funds offer a number of advantages: diversification, low costs, and little-to-no maintenance on the part of the investor.

How to Invest in index funds (1)

How to Invest in index funds (2)

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Steps to investing in index funds

Step 1: Pick your exchange

The NASDAQ, for example, is focused on growth stocks and tends to be more aggressive on the risk-reward scale. The Dow and S&P 500 are less volatile—though, as with any investment, they’re not bulletproof. In 2022, they dropped 8.78% and 19.44% respectively, though they recovered value in the first half of 2023. Study the exchanges for past performances and the types of companies listed before you invest any money. Then factor in your risk tolerance and time horizon. 


Step 2: Pick your fund

Many of the major players such as fund giant Vanguard and discount brokers Fidelity Investments and Charles Schwab are highly rated for their index funds and offer a wide variety. If you choose the Vanguard S&P 500 fund, you’re in good company: Investment guru and billionaire Warren Buffett calls it a favorite.

Step 3: Open an investment account

The account-opening process at many investment companies takes about 10 minutes, including at Vanguard, TD Ameritrade and Fidelity. When making a choice, you’ll want to take brokerage fees into account.

Pros of investing in index funds

When you invest in an index fund, you’re in the same boat as the broader stock or bond index it is mirroring. In the case of the Dow Jones Industrial Average, that links you to an annual return of 8.70%, as measured by the SPDR Dow Jones Industrial ETF (DIA), from its January 1998 inception through March 2022. If you choose an ETF index fund, rather than a mutual fund ETF, your costs are likely to be even lower.

Cons of investing in index funds

Index funds can encourage investor passivity. The investor who relies solely on them may miss out on the opportunities offered by skyrocketing growth stocks, for example. And while you’re getting an entire basket of stocks in the fund, you won’t be diversifying to the point where you’d include bonds, real estate or other non-equities.

Who should invest in index funds?

According to “Oracle of Omaha” Warren Buffet, just about anyone—including his estate once he passes away. In his famous 2013 letter to Berkshire Hathaway shareholders, Buffet wrote about how he wants his money invested for his wife after his passing: “My advice to the trustee could not be more simple: Put 10% of the cash in short-term government bonds and 90% in a very low-cost S&P 500 index fund.”

How much do index funds cost?

Many index funds have fees of less than 0.4%, whereas actively managed funds often charge fees of more than 0.77%. Compound that difference over time and you can see how index funds can offer significant wealth-building advantages. Many larger funds charge just $3 to $10 per year for every $10,000 you have invested.

Which index should I invest in?

Much of this will depend on how much risk you want to take. For example, NASDAQ index funds will be tied to growth and tech stocks that generally carry more risk. The Dow Jones is home to stalwart stocks that in many cases have been around for more than half a century. And stocks are weighted based on market capitalization rather than stock prices, as is the case with the Dow, where companies with a higher share price or more extreme price movement have a greater impact.

For beginners, the vast array of index funds options can be overwhelming. We recommend Vanguard S&P 500 ETF (VOO) (minimum investment: $1; expense Ratio: 0.03%); Invesco QQQ ETF (QQQ) (minimum investment: NA; expense Ratio: 0.2%); and SPDR Dow Jones Industrial Average ETF Trust (DIA). (minimum investment: none; expense Ratio: 0.16%).

You can also compare the best index funds and low cost index funds we've collected for you to consider.

Alternatives to index funds

Real estate, precious metals, and picking your own bonds or basket of stocks all represent established alternatives to index funds. You can also work closely with a financial advisor, such as JP Morgan Personal Advisor, to develop an investment approach that may or may not include index funds. Services like WiserAdvisor can match you with the financial advisor suited for your needs.

How to Invest in index funds (3)

How to Invest in index funds (4)

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Frequently asked questions (FAQs)

Is now a good time to invest in index funds?

Arguably, any time is a good time if you have an investment horizon of a decade or more. Viewed long-term, major equity indexes have robust track records. For example, the S&P 500’s average return is 10.67% annualized since the inception of its modern structure in 1957.

Is investing in index funds dangerous?

The same forces that doom investors in other scenarios—anxiety in plunging markets, fear of missing out (FOMO) and greed—can imperil anyone who sells their index fund shares during a short-term market dip. Ask anyone who sold off in the wake of the Feb 20 to March 14, 2020 mini-crash. The Dow Jones Industrial Average lost 35% immediately. Those who held on since March 20 have seen their index funds gain about 78%.

Index fund vs. ETF: What is the difference?

ETFs are considered a type of index fund, but not every index fund is an ETF. Index funds are often invested through mutual funds. ETFs can be traded more easily, much like stocks themselves. ETFs can be bought and sold on an open exchange, while mutual funds are only priced at the end of the day.

Index funds vs. actively managed funds

In an actively managed fund, you’re counting on the expertise of a fund manager or investment professional to outperform market indices. Index funds, by contrast, remain in the stocks and other investments that the index itself tracks.

TIME Stamp: Index funds offer easy, low-cost diversification, but not without risk

Index funds, though not risk free, make diversification easy and have lower fees than actively managed funds. The S&P Dow Jones Indices’ scorecard shows that, as of January 2023, only 8.59% of actively managed funds outperformed the S&P 500 over a period of 10 years. If you’re in that fortunate percentage, great—but you’ll also be paying higher fees for what might turn out to be close to break-even performance compared to the index fund.

The information presented here is created independently from the TIME editorial staff. To learn more, see our About page.

How to Invest in index funds (2024)

FAQs

How do you actually invest in index funds? ›

You can buy index funds through brokerages such as Charles Schwab, Fidelity or Vanguard. Financial advisors who hold client accounts at those companies or other brokerages can also buy index funds for you.

Is investing in an index fund enough? ›

Over the long term, index funds have generally outperformed other types of mutual funds. Other benefits of index funds include low fees, tax advantages (they generate less taxable income), and low risk (since they're highly diversified).

How much do I need to invest in an index fund? ›

How much is needed to invest in an index fund? The minimum needed depends on the fund and your broker's policies. If your broker allows you to buy fractional shares of stock, you may be able to invest in index fund ETFs with as little as $1. If not, your minimum investment will be the cost of one share of the ETF.

How do you explain index funds? ›

An “index fund” is a type of mutual fund or exchange-traded fund that seeks to track the returns of a market index. The S&P 500 Index, the Russell 2000 Index, and the Wilshire 5000 Total Market Index are just a few examples of market indexes that index funds may seek to track.

What is the best index fund for beginners? ›

For beginners, the vast array of index funds options can be overwhelming. We recommend Vanguard S&P 500 ETF (VOO) (minimum investment: $1; expense Ratio: 0.03%); Invesco QQQ ETF (QQQ) (minimum investment: NA; expense Ratio: 0.2%); and SPDR Dow Jones Industrial Average ETF Trust (DIA).

Can I invest $100 in index funds? ›

Start small and steadily grow your wealth using products and services like fractional shares, index funds, ETFs, retirement plans, brokerage accounts and robo-advisors. Alieza Durana joined NerdWallet as an investing basics writer in 2022.

Is there a downside to index funds? ›

While indexes may be low cost and diversified, they prevent seizing opportunities elsewhere. Moreover, indexes do not provide protection from market corrections and crashes when an investor has a lot of exposure to stock index funds.

Is it wise to only invest in index funds? ›

Investing legend Warren Buffett has said that the average investor need only invest in a broad stock market index to be properly diversified. However, you can easily customize your fund mix if you want additional exposure to specific markets in your portfolio.

Do billionaires invest in index funds? ›

In fact, a number of billionaire investors count S&P 500 index funds among their top holdings. Among those are Buffett's Berkshire Hathaway, Dalio's Bridgewater, and Griffin's Citadel.

How much money do I need to invest to make $4000 a month? ›

Making $4,000 a month based on your investments alone is not a small feat. For example, if you have an investment or combination of investments with a 9.5% yield, you would have to invest $500,000 or more potentially. This is a high amount, but could almost guarantee you a $4,000 monthly dividend income.

How much do I need to invest to make $1000 a month? ›

A stock portfolio focused on dividends can generate $1,000 per month or more in perpetual passive income, Mircea Iosif wrote on Medium. “For example, at a 4% dividend yield, you would need a portfolio worth $300,000.

How long should I invest in index funds? ›

Index funds are recommended to investors with an investment horizon of 7 years or more. It has been observed that these funds experience fluctuations in the short-term but it averages out over a longer term. With an investment window of at least seven years, you can expect to earn returns in the range of 10-12%.

How do index funds work for dummies? ›

Index funds invest in the same assets using the same weights as the target index, typically stocks or bonds. If you're interested in the stocks of an economic sector or the whole market, you can find indexes that aim to gain returns that closely match the benchmark index you want to track.

How much money can you make from index funds? ›

And, you can profit handsomely from such an investment: The average annual return for the S&P 500 is close to 10% over the long term. The performance of the S&P 500 index is better in some years than it is in others, though.

How to invest in S&P 500 for beginners? ›

The easiest way to invest in the S&P 500

The simplest way to invest in the index is through S&P 500 index funds or ETFs that replicate the index. You can purchase these in a taxable brokerage account, or if you're investing for retirement, in a 401(k) or IRA, which come with added tax benefits.

How to buy s&p 500 index fund? ›

The simplest way to invest in the index is through S&P 500 index funds or ETFs that replicate the index. You can purchase these in a taxable brokerage account, or if you're investing for retirement, in a 401(k) or IRA, which come with added tax benefits.

Do you make money off of index funds? ›

Small chance of big short-term gain: As investment tools designed for tracking market indices, index funds have minimal potential for achieving substantial short-term gains. Investors aiming for notable short-term profits should temper their expectations when opting for this investment strategy.

Can I sell index funds anytime? ›

Although not as liquid as exchange traded funds, index funds can be bought and sold at the end of each trading day. Many investors choose to buy and hold their index funds for months or years.

What is the average return of index funds? ›

The average stock market return is about 10% per year, as measured by the S&P 500 index, but that 10% average rate is reduced by inflation.

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