A Roth IRA doesn't earn interest by itself—it's a container that holds investments that earn returns

A Roth IRA is an account type, not an investment. The money inside it doesn't sit in a savings account earning interest. Instead, you choose what to put in the account—stocks, bonds, mutual funds, or even a money market fund—and those investments generate returns. The Roth IRA wrapper simply lets those returns grow tax-free, which is the real advantage.

If you want your Roth IRA to earn interest specifically, you can put money into a high-yield savings account or a money market fund within the Roth IRA. Some brokers and banks offer this option. But most people use a Roth IRA to hold stock or bond investments because those historically generate larger returns over time than interest-bearing accounts do.

The confusion usually comes from mixing up the account with the investment inside it. Your bank might offer a Roth IRA savings account that earns interest—that's real. But a Roth IRA at a brokerage like Fidelity or Vanguard doesn't earn interest on its own; you have to buy something with the money you deposit.

Key Takeaways

  • A Roth IRA is a container for investments, not an investment itself, so it does not earn interest unless you put interest-bearing investments inside it.
  • You can hold a high-yield savings account or money market fund in a Roth IRA if you want interest, though the rates are typically lower than stock market returns over long periods.
  • Most Roth IRAs hold stocks or mutual funds because historical returns on equities exceed savings account interest rates.
  • All growth inside a Roth IRA—whether from interest, dividends, or capital gains—is tax-free when you withdraw it in retirement.

Interest-bearing options you can hold inside a Roth IRA

If you want your Roth IRA to earn interest, you have real choices. Some banks offer Roth IRA savings accounts with interest rates that change based on the Federal Reserve's rate environment. You deposit money into the account, and the bank pays you interest on the balance, just like a regular savings account—except the interest grows tax-free.

Money market funds are another option. These are mutual funds that invest in short-term debt instruments and typically pay a yield (similar to interest) that fluctuates with market rates. Many brokerages let you hold a money market fund in a Roth IRA. The yield is usually higher than a savings account but lower than stock market returns.

Certificates of deposit (CDs) can also sit inside a Roth IRA. You lock up your money for a set period—three months, one year, five years—and the bank pays you a fixed interest rate. The interest is tax-free inside the Roth, which is a real benefit compared to holding a CD in a regular account.

The trade-off is that interest rates on savings accounts, money market funds, and CDs are currently modest compared to historical stock market returns. If you're young and have decades until retirement, interest-bearing investments inside a Roth IRA will likely grow your money more slowly than stock-based investments would.

Why most people don't use a Roth IRA for interest

The main reason is that a Roth IRA is designed for long-term growth, and stocks and stock mutual funds have historically outpaced interest rates over periods of 10 years or longer. If you're saving for retirement decades away, putting your money into a high-yield savings account earning 4% or 5% annually means you're giving up the chance for 7% to 10% average annual returns from stock investments.

The tax-free growth inside a Roth IRA amplifies this advantage. When you hold stocks in a regular taxable account, you pay capital gains tax on profits when you sell. Inside a Roth IRA, you pay nothing—ever. That tax savings compounds over time and makes the Roth IRA especially powerful for stock investments.

There's also a practical reason: most brokerages make it easy to buy stocks and mutual funds in a Roth IRA but don't offer high-yield savings accounts. If you want interest in your Roth, you may have to open the account at a bank rather than a brokerage, which limits your investment choices.

How returns are taxed differently inside and outside a Roth IRA

This is where the Roth IRA's real power shows up. Any return your investments generate—whether it's interest, dividends, or capital gains—is completely tax-free inside the account. You don't pay federal income tax on it when it's earned, and you don't pay tax when you withdraw it in retirement (as long as you follow the rules).

Outside a Roth IRA, in a regular taxable account, interest is taxed as ordinary income at your marginal tax rate. Dividends may be taxed at a lower rate if they're may have access to dividends, but you still owe tax. Capital gains are taxed when you sell, at either short-term rates (if you held less than a year) or long-term rates (if you held a year or more).

The difference compounds dramatically over time. A $10,000 investment that grows to $50,000 inside a Roth IRA is yours to keep. The same investment in a taxable account might owe $5,000 to $10,000 in taxes, depending on your tax bracket and how long you held it.

What happens if you want to switch from interest to stocks later

You can move money between investments inside your Roth IRA without any tax consequences or penalties. If you start with a money market fund earning interest and later decide to buy stocks, you simply sell the fund and buy the stocks. No tax bill, no penalty, no paperwork beyond what your brokerage requires.

This flexibility is one reason some people start conservative with a Roth IRA savings account or money market fund while they're learning about investing, then shift to stocks once they're comfortable. There's no wrong time to make the switch, and you don't lose any of the tax-free growth benefit by doing so.

The only limit is the annual contribution cap. For 2024, you can put up to $7,000 into a Roth IRA (or $8,000 if you're 50 or older). That limit applies whether you're buying stocks, holding interest-bearing investments, or a mix of both.

Interest rates and Roth IRA returns in different economic environments

When the Federal Reserve raises interest rates, savings accounts and money market funds inside a Roth IRA become more attractive because the yields go up. In 2023 and 2024, high-yield savings accounts offered rates around 4% to 5%, which was unusually high by historical standards. In other periods, rates have been much lower—sometimes below 1%.

Stock market returns vary widely year to year and decade to decade. Over the past 50 years, the S&P 500 has averaged roughly 10% annually, but individual years have ranged from losses of 30% or more to gains of 50% or more. This volatility is why stocks are considered riskier than interest-bearing investments, but also why they've historically built more wealth over long periods.

Your choice between interest and stocks in a Roth IRA should depend on your timeline, risk tolerance, and how much you already have saved. If you're 20 years from retirement and have a stable income, stocks probably make sense. If you're already retired and need the money soon, interest-bearing investments are safer.

Frequently Asked Questions

Can I earn interest in a Roth IRA at a bank?

Yes. Many banks offer Roth IRA savings accounts that earn interest just like regular savings accounts, except the interest grows tax-free. The interest rate varies by bank and changes with Federal Reserve policy. You can also hold a money market fund or CD in a Roth IRA at a bank.

Is interest earned in a Roth IRA taxed?

No. All interest, dividends, and capital gains earned inside a Roth IRA are tax-free. You don't pay tax when the money is earned, and you don't pay tax when you withdraw it in retirement, as long as you follow the withdrawal rules (account open five years, age 59½ or older, or a may have access to exception).

What's the difference between a Roth IRA at a bank versus a brokerage?

A bank Roth IRA typically offers savings accounts, CDs, and money market funds—interest-bearing investments. A brokerage Roth IRA offers stocks, bonds, mutual funds, and ETFs. You can hold either type, but a brokerage gives you more investment choices and is better suited for stock investing.

Should I put my Roth IRA in stocks or a savings account?

That depends on your age, timeline, and comfort with risk. Stocks historically return more over 10+ years but fluctuate in value. Savings accounts are stable but earn less. Many people use stocks in a Roth IRA when they're younger and shift toward interest-bearing investments as they approach retirement.

Can I move money from a Roth IRA savings account to stocks?

Yes. You can sell the savings account or money market fund and buy stocks without any tax penalty or consequences. The money stays in the Roth IRA the whole time, so all growth remains tax-free. You're just changing what the money is invested in.