A Roth IRA does not earn interest in the traditional sense, but the money you put in it grows through investments you choose

A Roth IRA is a container for investments, not a savings account. The account itself does not pay you interest the way a bank savings account does. Instead, you put money into the account and then decide what to invest it in — usually stocks, bonds, mutual funds, or target-date funds. Those investments are what generate returns over time.

The growth happens because the value of your investments goes up (or down). If you buy a mutual fund worth $5,000 and it grows to $5,500 in a year, that $500 gain stays in your Roth IRA tax-free. You do not pay taxes on that growth when you withdraw it in retirement, which is the main advantage of a Roth over other retirement accounts.

The rate of growth depends entirely on what you invest in and how the market performs. There is no may provide return, and your investments can lose value in the short term. Most people who use Roth IRAs for long-term retirement savings choose a mix of stock and bond funds that match their age and risk tolerance.

Key Takeaways

  • A Roth IRA does not pay interest itself; you earn money through the investments you hold inside the account.
  • Common investments in a Roth IRA include mutual funds, index funds, individual stocks, and bonds, each with different growth potential and risk.
  • Money that grows inside a Roth IRA is never taxed when you withdraw it in retirement, which makes long-term growth more powerful than in a regular taxable account.
  • Your brokerage firm or bank holds the Roth IRA and lets you choose from a menu of investments; different providers offer different investment options.

What investments are available inside a Roth IRA

When you open a Roth IRA at a brokerage like Fidelity, Vanguard, Charles Schwab, or a bank, you get access to a menu of investments. The menu varies by provider, but most offer mutual funds, index funds, exchange-traded funds (ETFs), individual stocks, and bonds.

Mutual funds and index funds are the most common choice for people who do not want to pick individual stocks. A mutual fund pools money from many investors and a manager buys a mix of stocks or bonds. An index fund is a type of mutual fund that simply tracks a market index like the S&P 500, so it requires less active management and usually costs less in fees.

Some people buy individual stocks or bonds, but this requires more research and carries more risk. A target-date fund is a popular middle ground — it automatically shifts from stocks to bonds as you get closer to retirement, so you do not have to rebalance it yourself.

How fees and investment costs affect your growth

Even though your Roth IRA earnings are tax-free, you still pay fees to the brokerage that holds your account and fees built into the investments themselves. These costs reduce your returns, so understanding them matters.

Brokerage fees vary. Some firms charge an annual account fee (often $0 to $50 per year, or waived if you maintain a minimum balance). Others charge per trade — for example, $5 to $10 each time you buy or sell a fund. Many large brokerages have eliminated per-trade fees for mutual funds and ETFs, so compare before you open an account.

Mutual funds and ETFs also charge an expense ratio — a yearly percentage fee taken from the fund's assets. A low-cost index fund might charge 0.03% per year, meaning you pay $3 annually on a $10,000 investment. An actively managed mutual fund might charge 0.50% to 1.00% or more. Over decades, even small differences in fees compound, so lower-cost funds usually leave you with more money at retirement.

The advantage of tax-free growth in a Roth IRA

The reason people use a Roth IRA instead of a regular taxable investment account is that all growth is tax-free. If you invest $6,000 and it grows to $50,000 over 30 years, you owe no federal income tax on that $44,000 gain when you withdraw it.

In a regular taxable account, you would owe capital gains tax on that $44,000 — either 15% or 20% federal tax depending on your income, plus state tax in most states. That could mean $6,600 to $8,800 going to taxes instead of staying in your pocket. Over a lifetime of investing, the tax savings in a Roth IRA can be substantial.

This tax-free growth is why starting a Roth IRA early matters so much. The longer your money sits in the account, the more it compounds, and none of that compounding is taxed away. Someone who starts at age 25 will have far more at retirement than someone who starts at 45, even if they contribute the same amount each year.

How to choose investments for your Roth IRA

If you are new to investing, starting with a target-date fund is usually the simplest choice. You pick the fund that matches roughly when you plan to retire — for example, a "2055 Target Date Fund" if you think you will retire around 2055. The fund automatically adjusts its mix of stocks and bonds as that date approaches, so you do not have to make decisions year after year.

If you want more control, you can build your own mix. A common approach for someone in their 30s or 40s is 80% stock funds and 20% bond funds. As you get older, you gradually shift toward more bonds and fewer stocks to reduce risk. A financial advisor or your brokerage's educational materials can help you think through what mix makes sense for your age and comfort with risk.

Avoid putting all your money in a single stock or a single sector (like technology or real estate). Spreading your money across different types of investments reduces the damage if one area performs poorly. This is called diversification, and it is one of the most reliable ways to manage risk over a long time horizon.

What happens to your Roth IRA earnings if you withdraw money early

You can withdraw the money you contributed to a Roth IRA at any time without penalty or tax. But if you withdraw earnings (the growth) before age 59½ and before the account has been open for five years, you will owe income tax on those earnings plus a 10% penalty.

For example, if you contributed $6,000 and your investments grew to $8,000, you can withdraw the $6,000 contribution anytime. But if you withdraw the $2,000 in earnings before age 59½, you owe tax on that $2,000 plus a 10% penalty ($200). There are a few exceptions — for instance, you can withdraw earnings penalty-free if you use them to buy your first home (up to $10,000 lifetime) or if you become disabled.

This is why a Roth IRA works best as a long-term retirement account. The tax-free growth only benefits you if you leave the money alone until retirement. If you think you might need the money within five years, a regular savings account or money market account is a safer choice.

Frequently Asked Questions

Can I lose money in a Roth IRA?

Yes. If your investments decline in value, the balance in your Roth IRA goes down. This is most likely to happen in the short term when markets are volatile. Over long periods (20+ years), stock market investments have historically recovered from downturns, but there is no may provide. Bonds and money market funds are less volatile but typically grow more slowly.

What is the difference between a Roth IRA and a savings account?

A savings account pays a fixed interest rate (currently 4% to 5% at many banks) and is insured by the FDIC up to $250,000. A Roth IRA holds investments that can grow faster but can also lose value, and there is no insurance. A Roth IRA is meant for retirement; a savings account is for emergency money or short-term goals.

How much should I expect my Roth IRA to grow each year?

There is no set amount. Stock funds have historically returned around 10% per year on average over long periods, but actual returns vary widely year to year. Some years you might gain 20%; other years you might lose 10%. Bond funds typically return 3% to 5% per year. Your actual return depends on what you invest in and how the market performs.

Do I have to pick my investments when I open a Roth IRA?

No. You can open the account and leave the money in a money market fund or cash sweep account while you decide. However, money sitting in cash does not grow much — it might earn 4% to 5% annually. Once you are ready, you can move it into investments. Some people contribute gradually and invest each contribution as it arrives.

Can I change my investments after I open a Roth IRA?

Yes. You can buy and sell investments inside your Roth IRA as often as you want with no tax consequences. Many people rebalance once a year — for example, selling some bonds and buying stocks if their mix has drifted out of balance. You can also switch from one mutual fund to another without triggering any tax.