A Roth IRA lets you save money for retirement in a tax-free account

A Roth IRA is a retirement savings account where you put in after-tax dollars—money you've already paid income tax on—and then the account grows without you owing taxes on the growth. When you withdraw money in retirement, you pay no federal income tax on it, including all the gains your investments made over the years. That's the core trade: you pay taxes now on what you put in, but you never pay taxes on what that money earns.

The account itself doesn't invest your money automatically. You deposit cash into the Roth IRA, then you choose what to invest it in—usually stocks, bonds, mutual funds, or target-date funds offered by your bank or brokerage. The money sits there and grows (or sometimes shrinks) based on how those investments perform. The Roth IRA is just the container that holds those investments tax-free.

Key Takeaways

  • You contribute after-tax dollars to a Roth IRA, meaning you pay income tax on the money before it goes in, but withdrawals in retirement are completely tax-free.
  • The money you deposit can be withdrawn at any time without penalty, but investment earnings must stay in the account until age 59½ to avoid taxes and penalties.
  • A Roth IRA has annual contribution limits (currently $7,000 for most people under 50, though this changes by year), and your ability to contribute phases out at higher incomes.
  • Unlike a traditional IRA or 401(k), a Roth IRA does not reduce your taxable income in the year you contribute, so it does not lower your taxes now.
  • Your Roth IRA can be passed to heirs, and they can withdraw the money tax-free under current rules, making it useful for leaving money behind.

How the tax-free growth actually works

When you invest $7,000 in a Roth IRA and that money grows to $25,000 over 20 years, you owe no tax on that $18,000 gain. In a regular taxable brokerage account, you would owe capital gains tax on the $18,000 when you sold the investments. In a traditional IRA or 401(k), you would owe income tax on the full $25,000 when you withdrew it. The Roth avoids both of those taxes.

This matters most if you expect your investments to grow significantly. A small account with modest returns saves you less in taxes than a large account with strong returns. Someone who invests $7,000 a year for 40 years and earns an average 7% annual return will have roughly $1.5 million in the account by retirement—and owe zero federal income tax on any of it.

The difference between contributions and earnings

Your Roth IRA has two parts: the money you put in (contributions) and the money your investments earned (earnings). You can withdraw your contributions at any time, for any reason, with no tax or penalty. If you put in $35,000 over five years and the account grows to $40,000, you can pull out $35,000 whenever you want.

The $5,000 in earnings is different. If you withdraw earnings before age 59½, you owe income tax on them plus a 10% penalty—unless you meet a narrow exception like a first-time home purchase (up to $10,000 lifetime) or a Roth conversion. This rule is why a Roth IRA can serve as both a retirement account and an emergency fund: your contributions are always accessible, but the earnings stay locked away until you're older.

Income limits and contribution caps

You can only contribute to a Roth IRA if your income is below a certain threshold. For 2024, the limit phases out between $146,000 and $161,000 for single filers and between $230,000 and $240,000 for married couples filing jointly. These numbers change each year. If your income is above the phase-out range, you cannot contribute directly to a Roth IRA, though you may be able to use a "backdoor Roth" strategy (converting a traditional IRA to a Roth).

The annual contribution limit is $7,000 for people under 50 (as of 2024). If you're 50 or older, you can contribute an extra $1,000 as a "catch-up" contribution. You cannot contribute more than you earned in income that year. If you earned $4,000 in 2024, you can only put $4,000 into a Roth IRA for that year, not the full $7,000.

Why someone might choose a Roth over a traditional IRA

A traditional IRA or 401(k) reduces your taxable income in the year you contribute, which lowers your taxes now. A Roth does not. So if you're in a low tax bracket now—maybe you're young, part-time, or between jobs—a Roth makes sense: you pay a low tax rate on the money going in, then pay zero tax on all the growth later. If you're in a high tax bracket now and expect to be in a lower one in retirement, a traditional account might save you more money overall.

A Roth also has no required minimum distributions. With a traditional IRA or 401(k), you must start withdrawing money at age 73 (as of 2023), whether you need it or not. With a Roth, you can leave the money alone and let it grow for as long as you live. This makes a Roth useful if you want to leave money to heirs or if you simply don't need the income in early retirement.

What happens to a Roth IRA after you die

When you pass away, your Roth IRA goes to whoever you named as a beneficiary on the account. They can withdraw the money tax-free under current rules, though the rules around inherited Roth IRAs changed in 2024 and vary depending on whether the beneficiary is a spouse, a child, or someone else. A spouse can treat the inherited Roth as their own. Non-spouse beneficiaries must withdraw the entire balance within 10 years, but those withdrawals are still tax-free.

This makes a Roth a powerful tool for leaving money behind. If you fund a Roth IRA for 30 years and it grows to $500,000, your heirs inherit $500,000 with no income tax bill attached. With a traditional IRA, they would owe income tax on the full amount.

Common reasons people use a Roth IRA

Young workers often use a Roth because they're in a low tax bracket and expect to earn more (and pay higher taxes) later. Self-employed people use a Roth as part of a larger retirement plan because the contribution limits are higher than a traditional IRA. People who expect a windfall or inheritance sometimes fund a Roth in years when their income is low. Parents sometimes open a Roth for a child with earned income, letting the money grow tax-free for 50+ years.

High earners who are phased out of direct Roth contributions sometimes use the backdoor Roth strategy: they contribute to a traditional IRA, then immediately convert it to a Roth and pay tax on the conversion. This is legal but requires careful record-keeping, especially if you have other traditional IRAs.

Frequently Asked Questions

Can I withdraw my money from a Roth IRA whenever I want?

You can withdraw the money you contributed at any time without penalty. Withdrawing the earnings before age 59½ triggers income tax and a 10% penalty, unless you meet an exception like a first-time home purchase. Many people use this feature as a backup emergency fund because their contributions are always accessible.

Does opening a Roth IRA lower my taxes this year?

No. A Roth contribution does not reduce your taxable income. A traditional IRA or 401(k) does. If you want to lower your taxes now, a traditional account is the better choice. If you want to avoid taxes in retirement, a Roth is better.

What if my income is too high to contribute to a Roth?

You may be able to use a backdoor Roth: contribute to a traditional IRA, then convert it to a Roth and pay income tax on the conversion. This strategy works even at high incomes, but it requires careful record-keeping and may trigger unexpected taxes if you have other traditional IRAs. Consult a tax professional before attempting this.

Can I have both a Roth IRA and a traditional IRA?

Yes, but your total contributions to both accounts combined cannot exceed the annual limit ($7,000 in 2024 for people under 50). If you contribute $4,000 to a Roth, you can only contribute $3,000 to a traditional IRA that year. You can have multiple Roth IRAs, but the limit applies across all of them.

What happens if I need the money before retirement?

You can withdraw your contributions anytime. Withdrawing earnings before 59½ costs you income tax plus a 10% penalty, unless you meet an exception. Some exceptions include first-time home purchase (up to $10,000 lifetime), disability, medical expenses over 7.5% of income, or substantially equal periodic payments. Check the rules for your specific situation.