Roth IRA vs. Index Fund: What’s the Difference? (2024)

Roth IRAs and index funds are both valuable tools for building wealth, but there’s a key difference: A Roth IRA is a type of investment account used to save for retirement, while an index fund is a type of investment. In fact, index funds are a common type of investment within Roth IRAs and other types of retirement accounts.

Learn more about Roth IRAs versus index funds as we break down the investment jargon and show you why they’re both good vehicles for growing your nest egg.

Key Takeaways

  • A Roth IRA is a type of tax-advantaged retirement account, while an index fund is a type of investment that tracks a market index.
  • Index funds are popular choices for Roth IRAs and other investment accounts.
  • A Roth IRA is a popular choice for investors because withdrawals are tax-free in retirement.
  • One of benefit of investing in index funds is automatic portfolio diversification.

What’s the Difference Between a Roth IRA and an Index Fund?

You may be wondering which is better: a Roth IRA or an index fund. But that’s a bit like asking which is better: a bank account or a wad of cash. Just as you keep your cash in a bank account, a Roth IRA is an account where you hold investments such as index funds and individual stocks and bonds. Let’s break it down a little further.

Roth IRAIndex Fund
How to investOpen a Roth IRA at a brokerage of your choosingOpen an investment account, fund it, and choose an index fund
Who is eligibleAnyone with earned income, although income limits applyAnyone with an investment account
Contribution limits (2022)$6,000, or $7,000 if you’re 50 or olderNot applicable
Contribution limits (2023)$6,500, or $7,500 if you’re 50 or olderNot applicable

A Roth IRA is a type of individual retirement arrangement (IRA), but it’s commonly referred to as an individual retirement account. You contribute after-tax money to a Roth IRA, meaning you don’t get a tax deduction for your contribution. However, if you follow the rules, your money grows untaxed and is tax-free when you take distributions when you’re 59 ½ or older.

Index funds are a common type of investment for Roth IRAs and other types of retirement accounts. An index fund is a basket of securities that tracks the performance of a market index. You can find index funds that invest across the overall stock market or bond market, or a specific segment of a market.

For example, when you invest in an S&P 500 index fund such as the Vanguard S&P 500 ETF (VOO) or the SPDR S&P 500 ETF, (SPY), you’re investing across 500 of the largest companies in the U.S. The goal of the fund is to mirror the performance of the S&P 500 index as closely as possible.

Note

Most index funds are passively managed, which means investment managers aim to mirror the performance of the benchmark index, rather than outperforming it. With an actively managed fund, managers attempt to beat the benchmark index.

One of the benefit of investing in index funds is that you get automatic portfolio diversification. You’re investing across many different securities, which is a lot less risky than investing in just a couple of different securities.

Roth IRAs

To invest in a Roth IRA, you’ll need to choose a brokerage and fund the account. From there, you can decide how to invest your money. An index fund, which may be mutual funds or exchange-traded funds (ETFs), is just one option you can choose.

Who's Eligible

To fund a Roth IRA, you need earned income, which is basically money you get from working. Your income also can’t exceed the Roth IRA income limits.

For tax year 2022, these limits are $144,000 for a single filer and $214,000 for a married couple filing a joint tax return. A single filer whose income is between $129,000 and $144,000 and a married couple whose income is between $204,000 and $214,000 can contribute a reduced amount.

For tax year 2023, these limits are $138,000 for a single filer and $218,000 for a married couple filing jointly. Single filers who make between $138,000 and $153,000 and married couples who make between $218,000 and $228,000 can contribute a reduced amount to their Roth IRA.

Contribution Limits

The Roth IRA maximum contribution you can make for tax year 2022 is $6,000 for people under age 50. The maximum contribution you can make for tax year 2023 is $6,500. People 50 and older can contribute an additional $1,000 in catch-up contributions.

Index Funds

You can invest in index funds with virtually any type of investment account. Investment accounts include Roth IRAs, traditional IRAs, Roth 401(k)s, traditional 401(k)s, and taxable brokerage accounts.

Who’s Eligible

There are no eligibility restrictions for index funds. As long as you’re eligible to open an investment account, you can invest in index funds. Retirement investment accounts have IRS rules you have to follow, while taxable brokerage accounts will allow you more flexibility.

Contribution Limits

There’s no limit on how much you can invest in index funds. However, you’re subject to the contribution limits of your investment account. For example, if you’re younger than 50 and your only investment account is a Roth IRA, you’d only be able to invest $6,500 in index funds for tax year 2023. But if you were to invest in index funds through a taxable brokerage account, there would be no limit to the amount you can invest.

Invest in Both

You don’t have to choose between a Roth IRA and index funds. A Roth IRA is an investment account, while an index fund is a type of investment you can choose for your Roth IRA or other investment accounts. In other words, you can open a Roth IRA and invest in index funds through that account.

Both Roth IRAs and index funds are solid options for retirement savings. Investing in an index fund allows you to invest without putting too much of your money in any single investment.

By investing in index funds within a Roth IRA, you allow your money to grow tax-free. As long as you follow the IRS rules, all the money in your Roth IRA will be tax-free when you retire.

Frequently Asked Questions (FAQs)

How much should I put in my Roth IRA per month?

For tax year 2022, the maximum amount you can put in your Roth IRA each year is $6,000, or $7,000 if you're over 60. That would mean putting in an average of $500 or $583.33 each month. For tax year 2023, the maximum amount you can put in is $6,500, or $7,500 if you're over 60. That would mean putting in an average of $541.67 or $625 each month. If you cannot afford to put that much in, just put in as much as you can. Small investments can also help you grow wealth.

Can you invest in the S&P 500 with a Roth IRA?

You can invest in an S&P 500 index fund, like the Vanguard S&P 500 ETF (VOO) or the SPDR S&P 500 ETF (SPY) within a Roth IRA account. You just need to set up and fund your Roth IRA, and then you can purchase any available index funds.

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Sources

The Balance uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

  1. Internal Revenue Service. "Traditional and Roth IRAs."

  2. Vanguard. “Vanguard S&P 500 ETF (VOO).”

  3. Internal Revenue Service. “Amount of Roth IRA Contributions That You Can Make for 2022.”

  4. Internal Revenue Service. “Amount of Roth IRA Contributions That You Can Make for 2023.”

  5. Internal Revenue Service. “Retirement Topics - IRA Contribution Limits.”

Roth IRA vs. Index Fund: What’s the Difference? (2024)

FAQs

Roth IRA vs. Index Fund: What’s the Difference? ›

A Roth IRA is a type of tax-advantaged retirement account, while an index fund is a type of investment that tracks a market index. Index funds are popular choices for Roth IRAs and other investment accounts. A Roth IRA is a popular choice for investors because withdrawals are tax-free in retirement.

What is the difference between a Roth IRA and the S&P 500? ›

this is another very common source of confusion so a Roth IRA is an investment account. you buy investments within it. The S&P 500 is stock index it's an index of the top 500 stocks in America there's S&P 500. funds etfs and index funds that are investments that you can buy within a Roth IRA.

Why index funds are better? ›

Because actively managed funds often underperform the market, and index funds match it, passively managed index funds typically bring their investors better financial returns over the long term. Plus, they cost less, as management fees for actively managed investments tend to be higher.

Why is a Roth IRA better than a mutual fund? ›

Perhaps the best feature of a Roth IRA is that qualified withdrawals are 100% tax-free. That's because these accounts are funded with after-tax dollars. Since you already paid tax on the money when you added it to your Roth IRA, you don't have to pay it again when you take that money out.

Is there anything better than a Roth IRA? ›

A Roth IRA or 401(k) makes the most sense if you're confident of having a higher income in retirement than you do now. If you expect your income (and tax rate) to be higher at present and lower in retirement, a traditional IRA or 401(k) is likely the better bet.

Is it better to invest in stocks or Roth IRA? ›

While a Roth IRA is well-suited to saving for retirement, a taxable brokerage account is a great option for saving for other short- and long-term goals. These accounts have more flexibility, meaning you can withdraw your money exactly when you need it rather than abiding by IRS withdrawal restrictions.

How many index funds should I own Roth IRA? ›

But how many funds do you need in your retirement account? For many retirement investors, a three-fund portfolio is sufficient. If you're feeling like a minimalist, you can get the job done with two funds—or, if you're feeling very Marie Kondo, even just one single, solitary fund.

What is the main disadvantage of index fund? ›

Advantages and Disadvantages of Index Funds
ProsCons
Lower fees than actively managed fundsLittle downside protection (especially during bear markets)
Lower risk than actively managed fundsLower return potential
Hands-off; little research/knowledge necessaryNo control over fund composition
1 more row
Mar 7, 2023

What are 3 reasons to invest in index funds? ›

Benefits of investing in index funds
  • Low fees. Since an index fund mimics its underlying benchmark, there is no need for an efficient team of research analysts to help fund managers pick the right stocks. ...
  • No bias investing. ...
  • Broad market exposure. ...
  • Tax Benefits of Investing in Index Funds. ...
  • Easier to manage.

Should I put all my money in index funds? ›

Investing in index funds has long been considered one of the smartest investment moves you can make. Index funds are affordable, enable diversification, and tend to generate attractive returns over time. Historically, index funds outperform other types of funds that are actively managed by top investment firms.

Why do people prefer Roth IRA? ›

You get tax-free growth

One of the benefits of a Roth IRA is that the money you invest in a Roth IRA grows tax-free, so you don't have to worry about reporting investment earnings—the money your money makes—when you file your taxes.

What is the best index fund for a Roth IRA? ›

7 Best Funds to Hold in a Roth IRA
FundInception DateTotal Annualized Return Since Inception
Vanguard Total World Stock Index Fund Admiral Shares (ticker: VTWAX)2/7/20199.1%
DFA US Small Cap Value Portfolio I (DFSVX)3/2/199310.8%
iShares Core High Dividend ETF (HDV)3/29/20119.8%
Schwab U.S. REIT ETF (SCHH)1/13/20116.3%
3 more rows
May 30, 2023

Do you need a Roth IRA to invest in index funds? ›

To invest in an index fund, you'll need to open a brokerage account, a traditional IRA or a Roth IRA (you can often choose to invest in index funds through your employer's 401(k) too).

What is the downside of a Roth IRA? ›

Roth IRAs might seem ideal, but they have disadvantages, including the lack of an immediate tax break and a low maximum contribution.

At what age does a Roth IRA not make sense? ›

Key Takeaways

You're never too old to fund a Roth IRA. Opening a later-in-life Roth IRA means you don't have to worry about the early withdrawal penalty on earnings if you're 59½. No matter when you open a Roth IRA, you have to wait five years to withdraw the earnings tax-free.

How much should I put in my Roth IRA per month? ›

The maximum amount you can contribute to a traditional IRA or Roth IRA (or combination of both) in 2023 is capped at $6,500. Viewed another way, that's about $542 a month you can contribute throughout the year. If you're age 50 or over, the IRS allows you to contribute up to $7,500 annually (or $625 a month).

Is it better to put money in savings or Roth IRA? ›

You're usually better off using Roth IRAs for their intended purpose: retirement savings. By offering tax-free withdrawals after you own the account for five years and are age 59½, they're an ideal way to invest in funds and individual securities that can potentially grow over several years.

How to invest smartly in a Roth IRA? ›

Consider investments that will benefit from the tax-free growth the Roth offers, including:
  1. Small-cap stocks and mutual funds.
  2. Index funds.
  3. International stocks (particularly emerging market companies or funds that focus on holding these types of companies).
  4. High-yield corporate bonds.
  5. Initial public offerings, or IPOs.
Feb 9, 2023

Is it better to invest in a 401k or a Roth IRA? ›

The Bottom Line. In many cases, a Roth IRA can be a better choice than a 401(k) retirement plan, as it offers more investment options and greater tax benefits. It may be especially useful if you think you'll be in a higher tax bracket later on.

Why can you only invest $6,000 in Roth IRA? ›

Both traditional and Roth contributions are capped so that higher-paid workers who can afford to defer large amounts of their compensation can't take undue advantage of these tax benefits—at the expense of the U.S. Treasury.

Is S&P 500 good for Roth IRA? ›

1. S&P 500 index funds. One of the best places to begin investing your Roth IRA is with a fund based on the Standard & Poor's 500 Index. It's a collection of hundreds of America's top companies, including many of the names you know and use every day (Amazon, Apple and Microsoft, for example).

How much of your portfolio should be in index funds? ›

What Is the 90/10 Rule in Investing? The 90/10 rule in investing is a comment made by Warren Buffett regarding asset allocation. The rule stipulates investing 90% of one's investment capital towards low-cost stock-based index funds and the remainder 10% to short-term government bonds.

Why are index funds not a good investment? ›

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.

Do rich people invest in index funds? ›

Some millionaires are all about simplicity. They invest in index funds and dividend-paying stocks. They seek passive income from equity securities just like they do from the passive rental income that real estate provides. These millionaires simply don't want to spend their time managing investments.

Which index funds are best? ›

That said, the following is a list of top-performing index funds in 3 years with 28% or more returns to investors in three years.
  • Motilal Oswal Nifty 500 Index Fund. ...
  • Nippon India Index Nifty 50. ...
  • Nippon India Index S&P BSE Sensex. ...
  • SBI Nifty Index Fund. ...
  • Tata Nifty 50 Index Fund. ...
  • UTI Nifty 50 Index Fund.
May 20, 2023

Should a beginner invest in index funds? ›

Index funds are popular with investors because they promise ownership of a wide variety of stocks, greater diversification and lower risk – usually all at a low cost. That's why many investors, especially beginners, find index funds to be superior investments to individual stocks.

Is the S&P 500 an index fund? ›

The Vanguard S&P 500 ETF (VOO 0.22%) has a low minimum investment of one share ($355 as of March 14, 2023) and a low expense ratio of 0.3%. This index fund-like product trades on a major stock exchange, allowing investors to buy and sell like they would a stock.

Are index funds taxed? ›

Index mutual funds & ETFs

Index funds—whether mutual funds or ETFs (exchange-traded funds)—are naturally tax-efficient for a couple of reasons: Because index funds simply replicate the holdings of an index, they don't trade in and out of securities as often as an active fund would.

Do millionaires use index funds? ›

Ultra-rich investors may hold a controlling interest in one or more major companies. But, many millionaires hold a portfolio of only a few equity securities. Many may hold index funds since they earn decent returns and you don't have to spend time managing them.

How long should you stay in an index fund? ›

Ideally, you should stay invested in equity index funds for the long run, i.e., at least 7 years. That is because investing in any equity instrument for the short-term is fraught with risks. And as we saw, the chances of getting positive returns improve when you give time to your investments.

Are index funds good for retirement? ›

Most experts agree that index funds are very good investments for long-term investors. They are low-cost options for obtaining a well-diversified portfolio that passively tracks an index.

How much will a Roth IRA grow in 20 years? ›

If you contribute 5,000 dollars per year to a Roth IRA and earn an average annual return of 10 percent, your account balance will be worth a figure in the region of 250,000 dollars after 20 years.

How does my money grow in a Roth IRA? ›

A Roth IRA can increase its value over time by compounding interest. Whenever investments earn interest or dividends, that amount gets added to the account balance. Account owners then can earn interest on the additional interest and dividends, a process that can continue over and over.

Do you report a Roth IRA on your taxes? ›

A Roth IRA differs from a traditional IRA in several ways. Contributions to a Roth IRA aren't deductible (and you don't report the contributions on your tax return), but qualified distributions or distributions that are a return of contributions aren't subject to tax.

What is the average return of the index fund? ›

The average stock market return is about 10% per year, as measured by the S&P 500 index. In some years, the market returns more than that, and in other years, it returns less.

How do I put money in an index fund? ›

You can buy index funds through your brokerage account or directly from an index-fund provider, such as Fidelity. When you buy an index fund, you get a diversified selection of securities in one easy, low-cost investment.

How safe are index funds? ›

Index funds are generally considered safe because they don't rely too much on the performance of any individual stock, and they also don't rely on the competence of investment managers as actively managed mutual funds or hedge funds do.

What is an example of an index fund? ›

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.

Why would you not invest in a Roth IRA? ›

One key disadvantage: Roth IRA contributions are made with after-tax money, meaning there's no tax deduction in the contribution year. This five-year rule may make Roths less beneficial to open if you're already in late middle age.

Who Cannot invest in Roth IRA? ›

If your earned income is too high, you cannot contribute at all. Modified AGI (MAGI) income limits on Roth IRA contributions for the 2023 tax year are $153,000 ($144,000 in 2022) for single filers and $228,000 ($214,000 in 2022) for married couples filing jointly.

Can I lose my IRA if the market crashes? ›

It's likely that you would see the overall value of your Roth IRA diminish in the event of a stock market crash. That doesn't mean that it would have no value or you'd lose all of your money, but fluctuations in the market do affect the values of the investments in IRAs.

Can a Roth IRA fail? ›

The first thing to know is that a Roth IRA is not a risk-free investment. Like any other investment, there is always the potential to lose money. However, there are some steps you can take to minimize your risk and maximize your chances of success. One way to do this is to diversify your investments.

How much will my Roth grow? ›

The Roth IRA calculator assumes 2% annual income growth. There is no inflation assumption. The Roth IRA calculator defaults to a 6% rate of return, which can be adjusted to reflect the expected annual return of your investments.

What is the best age to start a Roth IRA? ›

The longer your money stays in a Roth IRA, the more it is going to grow. Starting at age 25 is better than starting at 30, and starting at age 30 is better than 35.

How much should you have in a Roth IRA by age? ›

By age 40, you should have three times your annual salary already saved. By age 50, you should have six times your salary in an account. By age 60, you should have eight times your salary working for you. By age 67, your total savings total goal is 10 times the amount of your current annual salary.

What is the 5 year rule for Roth IRA? ›

The Roth IRA five-year rule says you cannot withdraw earnings tax-free until it's been at least five years since you first contributed to a Roth IRA account. This five-year rule applies to everyone who contributes to a Roth IRA, whether they're 59 ½ or 105 years old.

Is $100 a month good for Roth IRA? ›

You can also make automatic investments into a Roth IRA. Even just $100 per month can add up to $1,200 a year. And if you're 30 now, keep saving at that pace for the next 35 years and your investments earn 8 percent annually, you'll have about $220,000 tax-free by the time you're 65.

How much should my Roth IRA grow each year? ›

Historically, with a properly diversified portfolio, an investor can expect anywhere between 7% to 10% average annual returns. Time horizon, risk tolerance, and the overall mix are all important factors to consider when trying to project growth.

Can I put 500 a month in Roth IRA? ›

How much can I put in a Roth IRA each year? According to the IRS, the contribution limit in 2021 is $6,000 per year, or $500 per month. If you're 50 or older, the maximum contribution is $7,000.

Should I invest in a Roth IRA with the S & P 500? ›

One of the best places to begin investing your Roth IRA is with a fund based on the Standard & Poor's 500 Index. It's a collection of hundreds of America's top companies, including many of the names you know and use every day (Amazon, Apple and Microsoft, for example).

Which is better money market or IRA? ›

While a savings or money market account outside of an IRA can also provide stability and liquidity, an IRA money market does so while allowing you to retain the tax advantages of an IRA until you actually withdraw the money.

What is the average return of the S&P 500? ›

S&P 500 Annual Total Return is at -18.11%, compared to 28.71% last year. This is lower than the long term average of 9.29%. The S&P 500 Annual Total Return is the investment return received each year, including dividends, when holding the S&P 500 index.

Can you invest in the S&P 500 with IRA? ›

Ways to Invest in the S&P 500

The easiest way is to invest in an S&P 500 index fund. You can do this in a tax-advantaged account like a 401(k), IRA, HSA, or 529 plan. You could also open a taxable brokerage account to purchase an S&P 500 index fund.

Is it smart to put money in an IRA right now? ›

There's still time to contribute to or open an IRA for 2022 (up to $6,000 or $7,000 if you're age 50 or older in 2022.) Every year, you have a nearly 16-month period over which you can contribute to an IRA for that tax year. So, for 2022, you have until April 18, 2023, to make your IRA contribution.

What is the best type of IRA to invest in? ›

Retirement experts often recommend the Roth IRA, but it's not always the better option, depending on your financial situation. The traditional IRA is a better choice when you're older or earning more, because you can avoid income taxes at higher rates on today's income.

How much is $10,000 invested in Apple 20 years ago? ›

As a result, $10,000 in AAPL stock purchased 20 years ago would be worth about $7.51 million today, assuming reinvested dividends.

How much would $8000 invested in the S&P 500 in 1980 be worth today? ›

Comparison to S&P 500 Index

To help put this inflation into perspective, if we had invested $8,000 in the S&P 500 index in 1980, our investment would be nominally worth approximately $912,320.82 in 2023. This is a return on investment of 11,304.01%, with an absolute return of $904,320.82 on top of the original $8,000.

How much was $10,000 invested in the S&P 500 in 2000? ›

$10,000 invested in the S&P 500 at the beginning of 2000 would have grown to $32,527 over 20 years — an average return of 6.07% per year.

Which S&P 500 fund is best? ›

Our Top Picks for the Best S&P 500 Index Funds
  • Fidelity 500 Index Fund (FXAIX)
  • Vanguard 500 Index Fund Admiral Shares (VFIAX)
  • Schwab S&P 500 Index Fund (SWPPX)
May 12, 2023

How much to invest in S&P 500 to be a millionaire? ›

Data source: Author's calculations. As you can see from the chart, investing $5,000 annually in the S&P 500 would make you a millionaire in a little over 30 years, assuming average 10.25% annual returns.

Is it OK to only invest in S&P 500? ›

It might actually lead to unwanted losses. Investors that only invest in the S&P 500 leave themselves exposed to numerous pitfalls: Investing only in the S&P 500 does not provide the broad diversification that minimizes risk. Economic downturns and bear markets can still deliver large losses.

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