The core difference: when you pay taxes

A Traditional IRA lets you put money in before you pay income tax on it. You get a tax deduction in the year you contribute, which lowers your taxable income. Then when you withdraw the money in retirement, you pay income tax on what you take out.

A Roth IRA works the opposite way. You contribute money that you have already paid income tax on. The money grows tax-free, and when you withdraw it in retirement, you owe no income tax on any of it—not on what you put in, and not on the growth.

This one difference shapes almost everything else about how these accounts work. Which one makes more sense depends on whether you think your tax rate will be higher now or in retirement.

Key Takeaways

  • Traditional IRAs let you deduct contributions from your taxes now, but you pay income tax on withdrawals in retirement.
  • Roth IRAs take after-tax money now, but all withdrawals in retirement are tax-free.
  • Traditional IRAs require you to start taking withdrawals at age 73, while Roth IRAs have no withdrawal requirement during your lifetime.
  • Roth IRAs let you withdraw your contributions (not earnings) at any time without penalty, while Traditional IRAs charge a 10% penalty if you withdraw before age 59½.
  • Income limits restrict who can contribute to a Roth IRA, but there are no income limits for Traditional IRAs.

Contribution limits and income restrictions

Both account types have the same annual contribution limit. For 2024, you can put up to $7,000 into either a Traditional or Roth IRA (or $8,000 if you are 50 or older). You cannot contribute more than your earned income for the year, and you cannot split one limit between the two—if you put $4,000 in a Traditional IRA, you can only put $3,000 in a Roth that same year.

A Roth IRA has income limits that phase out your ability to contribute. If your income is above a certain threshold, you cannot contribute the full amount or cannot contribute at all. These thresholds change each year and depend on your filing status. A Traditional IRA has no income limit—anyone with earned income can contribute—but if you or your spouse have access to a workplace retirement plan, the tax deduction phases out at higher incomes.

Withdrawals before retirement and the 10% penalty

If you need money before age 59½, the two accounts treat you very differently. A Traditional IRA charges a 10% early withdrawal penalty on top of income tax. So if you withdraw $10,000 at age 45, you pay income tax on the full $10,000 plus a $1,000 penalty.

A Roth IRA lets you withdraw your contributions (the money you put in) at any time without penalty or tax. If you contributed $50,000 over several years and the account grew to $65,000, you can withdraw the $50,000 whenever you want. You cannot withdraw the $15,000 in earnings without penalty until age 59½, but the contributions are always yours to access.

Both accounts have narrow exceptions to the early withdrawal penalty—for a first home purchase, medical expenses, or disability—but these exceptions are limited and have specific rules. The Roth's ability to access contributions penalty-free is the main practical difference.

Required withdrawals in retirement

Once you reach age 73, a Traditional IRA requires you to take a minimum withdrawal each year, whether you need the money or not. This is called a Required Minimum Distribution, or RMD. The IRS calculates the amount based on your age and account balance. If you do not take the full RMD, you pay a 25% penalty on the amount you should have withdrawn (or 10% if you correct it within two years).

A Roth IRA has no required withdrawal requirement during your lifetime. You can leave the money untouched for as long as you live, and it continues to grow tax-free. This makes a Roth useful if you do not need the retirement income or want to leave the account to heirs.

Tax treatment of withdrawals and inherited accounts

When you withdraw from a Traditional IRA in retirement, the entire withdrawal is taxed as ordinary income at your current tax rate. If you withdraw $50,000 in a year when you are in the 22% tax bracket, you owe $11,000 in federal income tax on that withdrawal.

Roth withdrawals are never taxed. If you withdraw $50,000 from a Roth, you owe zero federal income tax. This can matter significantly if you are trying to stay in a lower tax bracket or if you have other income sources in retirement.

If you leave either account to an heir, the rules changed in 2024. Most non-spouse heirs must now withdraw the entire inherited account within 10 years. With a Traditional IRA, they pay income tax on every withdrawal. With a Roth IRA, the withdrawals are tax-free to the heir.

Which account makes sense for your situation

Choose a Traditional IRA if you want to lower your taxable income this year, expect to be in a lower tax bracket in retirement, or have income too high to contribute to a Roth. The immediate tax deduction is valuable if you are working and paying taxes now.

Choose a Roth IRA if you expect to be in a higher tax bracket in retirement, want tax-free withdrawals, value the flexibility to access contributions early, or want to leave tax-assistance programs to heirs. A Roth is also useful if you have little or no income this year but expect higher income later—you can contribute at a low tax cost now.

Some people open both accounts and split their contributions. There is no rule against it, as long as your total contribution across both accounts does not exceed the annual limit.

Conversions and rollovers between accounts

You can move money from a Traditional IRA to a Roth IRA in a process called a conversion. When you do, you pay income tax on the amount you convert in that tax year. This is useful if you have a Traditional IRA and expect lower income in a particular year—you can convert some or all of it to a Roth and pay tax at a lower rate.

You can also roll over money from a workplace retirement plan (like a 401(k)) into either a Traditional or Roth IRA. A rollover to a Traditional IRA is usually tax-free. A rollover to a Roth is treated like a conversion and triggers income tax.

Frequently Asked Questions

Can I have both a Traditional and Roth IRA at the same time?

Yes. You can open and contribute to both accounts in the same year, as long as your total contributions to both do not exceed the annual limit. Many people use both to split their retirement savings strategy.

What happens if I contribute too much to an IRA?

If you contribute more than the annual limit, the IRS charges a 6% penalty tax on the excess amount each year it stays in the account. You can fix this by withdrawing the excess and any earnings on it before your tax filing deadline.

Can I deduct a Traditional IRA contribution if I have a 401(k) at work?

It depends on your income. If you or your spouse have access to a workplace retirement plan, the deduction phases out at higher income levels. You can still contribute to the Traditional IRA, but you may not be able to deduct it. A tax professional can tell you the exact threshold for your situation.

Is a Roth IRA better than a Traditional IRA?

Neither is universally better—it depends on your current tax rate, expected retirement tax rate, and how soon you might need the money. A Roth is better if you expect higher taxes later or want tax-free withdrawals. A Traditional IRA is better if you want to reduce your taxes now.

What if my income is too high for a Roth IRA?

If your income exceeds the Roth contribution limit, you can still convert money from a Traditional IRA to a Roth (though you pay tax on the conversion). Some people use this strategy, called a "backdoor Roth," to get around the income limit.