About the Author
The Motley Fool has a disclosure policy.
Invest better with The Motley Fool. Get stock recommendations, portfolio guidance, and more from The Motley Fool's premium services.

The Roth IRA is an individual retirement account that can provide tax-free growth and withdrawals. While it can help anyone save more money for retirement, a Roth IRA is usually best for people who expect to be in the same or a higher tax bracket in retirement than they are now.
The basic idea of a Roth IRA is this: You put money in now so it can grow, and then you withdraw it later in retirement. But there's a lot more to unpack, so let's take a closer look.
Think of a Roth IRA as a special home for your retirement savings that helps you minimize your taxes after you retire. It doesn't actually make money for you. Your retirement savings grow through a combination of your contributions (deposits) and your investment earnings.
The more you contribute to your Roth IRA, the more it will eventually be worth. You place your Roth IRA contributions in various investments that will hopefully increase in value over time, and you can withdraw from the account tax-free later.
How much your Roth IRA will grow each year depends on how much you contribute and what you invest in. It's impossible to predict, as the stock market can be volatile and past performance doesn't guarantee future returns.
What you can invest in depends on which type of Roth IRA you open and which custodian you use. Most Roth IRAs enable you to invest in the following:
Most IRAs prohibit you from investing in the following things:
There is a loophole for these things known as a self-directed Roth IRA, though. This is a special type of IRA that enables you to invest in assets you can't normally hold in a retirement account. These accounts are usually best for experienced investors and can be a little more difficult to open, as fewer custodians offer them.
You are responsible for deciding how much you contribute to your Roth IRA and what you want to invest your money in, unless you use a robo-advisor or hire a financial planner.
All IRAs are required to have a custodian by law. The custodian could be a bank, an insurance company, or a mutual fund company, but brokerage firms are the most popular because they offer a wider range of investments. Your custodian is responsible for holding your assets, ensuring all of your investments comply with IRS guidelines, and completing necessary reporting requirements.
It's important to stay mindful of the annual contribution limits: $7,500 for those under 50 and $8,600 for those 50 and older in 2026. These are adjusted annually for inflation but are widely expected to remain unchanged in 2027. However, keep in mind that Roth IRAs have income limits, which means certain high-income earners may have lower contribution limits or be unable to contribute to a Roth IRA at all.
What you invest in is largely up to you, but you need to consider your investing experience and your risk tolerance. Some types of investments are well-suited to beginners, while others are difficult to turn a profit unless you have specialized knowledge of the industry.
Some investments are also riskier than others. Generally, younger people can afford to invest heavily in more volatile assets like stocks because their portfolios will have decades to recover from losses before they need to draw on them. But as you age, your risk tolerance declines, so you'll want to move more of your money into less volatile assets, such as bonds.
You also have to make sure you're diversified between many investments and sectors. This reduces the risk of significant loss if one of your investments underperforms. Mutual funds, including low-cost index funds, provide a simple way to diversify your investments quickly.
Once you have a clear idea of what you want to invest in, you need to find a Roth IRA custodian that offers those options. If you think you may want to open other types of investment accounts in the future, like a traditional IRA, a taxable brokerage account, or a 529 college savings account, look for a custodian that offers these as well.
You technically have up until the tax deadline for the year -- usually April 15 of the next year -- to contribute to your IRA, but waiting this long deprives you of months of potential investment growth. You're better off making a lump-sum contribution at the beginning of the year or contributing a regular amount each month.
Because Roth IRA contributions don't reduce your taxable income for the year, you could end up in a higher tax bracket than you're used to if you've contributed to a tax-deferred account in years past. In that case, you may want to put a little money in a tax-deferred account to keep yourself in a lower tax bracket so you can pay a smaller percentage in taxes on your Roth savings.
If you're earning less this year than normal, consider converting some of your tax-deferred retirement savings to Roth savings. You will pay taxes in the year you do the conversion, but this may not affect your tax bracket if you're careful about how much you convert at a time.
Roth IRAs give you a lot of freedom to invest in a way that aligns with your preferences. But if you want to get the most out of yours, it helps to understand how they work and what steps you can take to maximize your savings. Review your Roth IRA contributions and asset allocation at least once a year and make any changes you feel are necessary to keep yourself on track for the retirement you want.