How to buy an S&P 500 index fund: Key things to know

• Investing in an S&P 500 index fund is a simple option to get on the spot publicity to lots of of the biggest firms within the U.S. in a single funding automobile.

• All S&P 500 funds are essentially invested in the identical shares, so selecting the “most cost-effective” one (the one with the bottom expense ratio) is the best way to go.

• You’ll want a brokerage account to spend money on an index fund, which you’ll open without spending a dime.

Mutual funds and ETFs that monitor the Normal & Poor’s 500 index are among the many hottest investments — and it’s little surprise why. The S&P 500 index has achieved a median whole return of about 10% yearly since 1960. Even adjusting for inflation, the S&P 500 has produced a median whole return of greater than 6% yearly.

The S&P 500 is made up of the five hundred largest firms within the U.S. by market capitalization. Legendary investor Warren Buffett has lengthy suggested buyers to purchase and maintain an S&P 500 index fund, as an alternative of making an attempt to select shares. In case you’re contemplating selecting one in your portfolio, right here’s what you’ll must know to get began.

An index mutual fund or exchange-traded fund (ETF) is an funding that accommodates a group of all of the shares which are a part of a selected index. Whenever you purchase an S&P 500 index fund, you’re buying a small portion of shares in all the businesses included in that index.

The S&P 500 index is seen because the bellwether of the U.S. inventory market. It accommodates 500 of the biggest firms within the U.S., and when buyers speak about “beating the market,” the S&P 500 is usually thought of the benchmark.

The only real objective of S&P 500 index funds is to imitate the composition and efficiency of the index. There is no such thing as a fund supervisor on the helm selecting which shares to purchase or promote; changes within the holdings occur solely when the underlying index adjustments. And since they’re passively managed investments, buyers save some huge cash on administrative and different charges.

Be taught extra: Low-cost index funds: A newbie’s information

It’s surprisingly straightforward to purchase an S&P 500 fund. You may arrange your account to purchase the index fund on autopilot, so that you’ll nearly by no means have to observe the account, or you may enter your trades manually.

It’s straightforward to seek out an S&P 500 index fund, even when you’re simply beginning to make investments.

A part of the fantastic thing about index funds is that they may have precisely the identical shares and weightings as one other fund based mostly on the identical index. In that sense, it could be like selecting amongst 5 McDonald’s eating places serving precisely the identical meals: which one would you go along with? You’d most likely choose the restaurant with the bottom value, and it’s normally the identical with index funds.

Listed below are three key standards for choosing your fund:

• Expense ratio: To find out whether or not a fund is cheap, you’ll need to take a look at its expense ratio. That’s the fee that the fund supervisor will cost you over the course of the 12 months to handle the fund as a share of your funding within the fund.

• Gross sales load: In case you’re investing in mutual funds, you’ll additionally need to see if the fund supervisor expenses you a gross sales load, which is a elaborate identify for a gross sales fee. You’ll need to keep away from this sort of expense totally, notably when shopping for an index fund. ETFs don’t cost gross sales masses.

• Funding location: In case you’re investing in a taxable brokerage account (slightly than a retirement account), needless to say ETFs are extra tax-efficient than equal index mutual funds. Shopping for an ETF in a taxable brokerage account will provide higher after-tax returns over the long-term.

S&P 500 index funds have a number of the lowest expense ratios in the marketplace. Index investing is already cheaper than nearly every other form of investing, even when you don’t choose the most cost effective fund. Many S&P 500 index funds cost lower than 0.10% yearly. At that fee, you’ll pay solely $10 yearly for each $10,000 you’ve gotten invested within the fund.

Some funds are even cheaper than that. Listed below are 4 of one of the best S&P 500 index funds, together with one which’s utterly fee-free:

In investing, particularly with passive index funds, paying extra doesn’t at all times translate into higher returns. In actual fact, the connection between charges and returns is usually reversed. Since these funds are largely the identical, your alternative will not be a “make or break” choice — you may anticipate to get the efficiency of the index, no matter that’s, minus the expense ratio or any charges you’re paying. So prices are an necessary consideration right here.

Choose your fund and notice its ticker image, a code of three to 5 letters.

After you’ve chosen your index fund, you’ll need to entry your investing account, whether or not it’s a 401(okay), an IRA or a daily taxable brokerage account.

In case you don’t have an account, you’ll must open one, which you are able to do in quarter-hour or much less. Listed below are 4 steps to take action:

• Select a supplier. See Bankrate’s listing of greatest on-line brokers for mutual fund investing for a variety that features many with no account minimums and many no-commission mutual funds and ETFs.

• Present some primary data (identify, Social Safety quantity or tax ID).

• Select an account kind (a daily taxable brokerage account or an IRA).

• Fund your account (switch cash instantly from a checking account into the brokerage account).

You don’t should be rich to start investing, however it is best to have a plan. And that plan begins with determining how a lot you’re in a position to make investments. You’ll need to add cash usually to the account and goal to carry it there for at the very least three to 5 years to permit the market sufficient time to rise and get well from any main downturns.

When you’ve found out how a lot you may make investments, transfer that cash to your account. Then arrange your account to usually switch a desired quantity every week or month out of your financial institution or a paycheck direct deposit.

As soon as the S&P index fund you need to purchase and the way a lot you’re in a position to make investments, shopping for an index fund is comparatively easy.

Right here’s the way it works:

1. Seek for your index fund: Discover the S&P 500 index fund you need to purchase in your dealer’s web site. We mentioned a number of well-liked choices earlier.

2. Place an order: Select the variety of shares or greenback quantity you need to buy. If shopping for an ETF, you could possibly select between market orders and restrict orders.

3. Maintain and monitor: Periodically verify your fund’s efficiency, similar to on a month-to-month or quarterly foundation

In case you’re in a position to transfer cash into the brokerage account usually, many brokers will let you arrange an investing schedule to purchase an index fund on a recurring foundation. This can be a nice possibility for buyers who don’t need to bear in mind to position a daily commerce. You may set it and overlook it.

In consequence, you’ll be capable of reap the benefits of the advantages of dollar-cost averaging, which may help you cut back danger and improve your returns.

There are a couple of key variations between an S&P 500 index fund and the underlying index. There is no such thing as a option to spend money on the underlying index, solely the funds that mirror it. This may result in slight variations in efficiency because of the following:

• Expense ratio: Funds have administration charges that can cut back returns.

• Monitoring error: Small discrepancies in efficiency attributable to precise holdings and buying and selling of the person firms.

• Money drag: Funds (notably mutual funds) maintain money to accommodate buyers who promote shares.

• Tax inefficiencies: Index mutual funds will go on any annual capital positive aspects from different buyers’ gross sales, which can be taxable no matter whether or not a given investor has made a sale or not.

S&P 500 index funds have change into extremely well-liked with buyers, and the explanations are easy:

• Possession of many firms: These funds will let you maintain a stake in lots of of shares, even when you personal only one share of the index fund.

• Diversification: This broad assortment of firms means you decrease your danger by way of diversification. The poor efficiency of 1 firm gained’t damage you as a lot if you personal many firms.

• Low value: Index funds are typically low value (which means they’ve low expense ratios) as a result of they’re passively managed, slightly than actively managed. In consequence, extra of your hard-earned {dollars} are invested as an alternative of paid to fund managers as charges.

• Stable efficiency: Your returns will successfully equal the efficiency of the S&P 500, which has traditionally been about 10% yearly on common over lengthy intervals.

• Straightforward to purchase: It’s a lot less complicated to spend money on index funds than it’s to purchase particular person shares, as a result of it requires little time and no investing experience.

S&P 500 index funds have a number of benefits that can attraction to most long-term buyers; nevertheless, it’s necessary to acknowledge the potential downsides.

Right here’s one drawback: S&P 500 index funds, by design, are restricted to large-cap firms. This implies you gained’t have publicity to different market segments, similar to small-cap and mid-cap shares, bonds and actual property.

For buyers who need to maintain their investments easy, “whole inventory market” index mutual funds and ETFs provide publicity to the breadth of the U.S. inventory market, together with smaller capitalization shares. All-world indices will embrace worldwide shares alongside U.S. shares. Lastly, target-date or target-allocation funds, whereas normally not passive indices, are constructed to be single-fund options for buyers who desire a whole portfolio in a single neat package deal. These funds are extra expensive however really provide a hands-off method.

Be taught extra: The ten greatest investments of 2026

• What’s the greatest S&P 500 index fund?

  There is no such thing as a single greatest S&P 500 index fund. Every invests within the 500 largest U.S. firms, making all S&P 500 index funds fairly comparable in efficiency. As a result of efficiency is comparable, buyers ought to search for a fund with minimal charges at certainly one of their most well-liked brokers.

• What if I had invested $1,000 within the S&P 500 10 years in the past?

  The quantity you’ll have on this state of affairs depends upon a couple of variables, similar to whether or not you selected to reinvest dividends and which fund you chose, however $1,000 invested over the 10-year interval from 2016 by way of 2025, with dividends reinvested, would have grown to roughly $4,200, a 15.6% nominal annual return. (However don’t overlook that previous efficiency isn’t a assure of future returns.)

• Ought to I make investments all my 401(okay) within the S&P 500?

  It’s usually not advisable to take a position your 401(okay) totally within the S&P 500. Monetary advisors advocate diversifying your portfolio with different investments, similar to small-cap shares, worldwide shares and bonds.

  The vast majority of 401(okay) plans will embrace varied index mutual funds on the funding menu, however there isn’t any realizing what, particularly, will probably be accessible to you in your office retirement plan. Many plans as of late do provide entry to target-date funds, that are an all-inclusive diversified retirement portfolio (the “goal date” is the 12 months you propose to retire). However when you’re not sure find out how to make investments, one of the best wager, if potential, is to debate your funding decisions with a monetary advisor who understands your funds and funding objectives.

Shopping for an S&P 500 index fund is usually a clever choice in your portfolio, and that’s one purpose that Warren Buffett has constantly really useful it to buyers. It’s straightforward to discover a low-cost fund and arrange a brokerage account, even when you solely have primary data of what to do. Then you definately’ll be capable of benefit from the strong efficiency of the S&P 500 over time.

— Bob Haegele contributed to this text.

Editorial Disclaimer: All buyers are suggested to conduct their very own impartial analysis into funding methods earlier than investing choice. As well as, buyers are suggested that previous funding product efficiency is not any assure of future value appreciation.