The core difference: when you pay taxes

A traditional IRA lets you deduct contributions from your taxes right now, but you pay income tax on the money when you withdraw it in retirement. A Roth IRA takes the opposite path: you contribute after-tax dollars (no deduction today), but withdrawals in retirement are tax-free.

That's the entire distinction. Everything else—contribution limits, withdrawal rules, required distributions—flows from this one choice about timing. The question is not which account is objectively better, but which tax outcome makes sense for your current income and what you expect in retirement.

Key Takeaways

  • Traditional IRA contributions may reduce your taxable income this year if you meet income limits, but you'll owe income tax on withdrawals later.
  • Roth IRA contributions use after-tax money with no deduction today, but may have access to withdrawals in retirement are completely tax-free.
  • Your income determines whether you can contribute to a Roth; traditional IRAs have no income limit, but deductions phase out at higher earnings.
  • Traditional IRAs require you to start taking distributions at age 73; Roth IRAs have no required distributions during your lifetime.
  • If you expect to be in a higher tax bracket in retirement, a Roth usually makes more sense; if you expect lower taxes later, traditional often wins.

How contribution limits and income rules work

Both account types allow you to contribute up to $7,000 per year (or $8,000 if you're 50 or older) for the 2024 tax year. The IRS adjusts these limits annually for inflation.

For a traditional IRA, there is no income limit on who can contribute. However, if you or your spouse have access to a workplace retirement plan (like a 401(k)), the deduction phases out at higher incomes. For 2024, if you're covered by a workplace plan and file as single, the deduction begins to phase out at $77,000 and disappears entirely at $87,000. These thresholds are higher for married filers and different if only your spouse has a workplace plan.

For a Roth IRA, you can only contribute if your income falls below certain limits. For 2024, single filers can contribute the full amount if their modified adjusted gross income (MAGI) is under $146,000; the ability to contribute phases out between $146,000 and $161,000. For married couples filing jointly, the range is $230,000 to $240,000. If your income exceeds these limits, you cannot contribute to a Roth directly, though a "backdoor Roth" strategy exists (converting a traditional IRA to a Roth) if you want to explore that option.

Tax deductions and withdrawals

With a traditional IRA, you get a tax deduction for your contribution in the year you make it—but only if you don't have a workplace retirement plan, or if your income is below the phase-out range. If you contribute $7,000 and you're may be able to access for the full deduction, your taxable income drops by $7,000 that year. When you withdraw money in retirement, every dollar comes out as ordinary income and is taxed at your current rate.

With a Roth IRA, you receive no deduction. You contribute money you've already paid income tax on. In return, when you withdraw money in retirement—both your contributions and all the earnings they've generated—you owe no federal income tax on any of it, provided the account has been open for at least five years and you're at least 59½.

This difference matters most when your tax bracket changes. If you're in a 24% bracket now and expect to be in a 12% bracket in retirement, a traditional IRA saves you more in taxes today than you'll owe later. If you're in a 24% bracket now and expect to be in a 32% bracket in retirement, a Roth avoids the higher tax bill down the road.

Required distributions and account flexibility

A traditional IRA requires you to begin taking distributions at age 73 (as of 2023; this age was raised from 72 under the SECURE 2.0 Act). The IRS calculates a minimum amount based on your age and account balance, and you must withdraw at least that much each year. If you don't, you face a 25% penalty on the shortfall (reduced to 10% if you correct it within two years). These required minimum distributions (RMDs) are taxed as ordinary income.

A Roth IRA has no required distributions during your lifetime. You can leave the money untouched for as long as you want, and it continues to grow tax-free. This makes a Roth useful if you don't need the money in retirement or want to leave it to heirs. Your beneficiaries will eventually have to withdraw the funds, but the tax-free growth remains theirs.

Both accounts allow you to withdraw your contributions (not earnings) at any time without penalty, though a Roth gives you more flexibility because contributions and earnings are easier to separate. With a traditional IRA, any withdrawal is treated as a proportional mix of contributions and earnings, which complicates early access.

Early withdrawal rules and exceptions

If you need money before retirement, the rules differ. With a traditional IRA, withdrawals before age 59½ are generally subject to a 10% early withdrawal penalty plus income tax on the amount withdrawn. Some exceptions exist: you can withdraw penalty-free for a first-time home purchase (up to $10,000 lifetime), medical expenses exceeding 7.5% of adjusted gross income, health insurance premiums while unemployed, or substantially equal periodic payments under a specific IRS formula.

With a Roth IRA, you can withdraw your contributions at any time, tax-free and penalty-free, because you already paid tax on that money. Withdrawing earnings before 59½ typically triggers the 10% penalty and income tax, but the same exceptions apply. This makes a Roth more accessible if you're uncertain whether you'll need the money before traditional retirement age.

Which account makes sense for your situation

Choose a traditional IRA if you want to reduce your taxable income this year, expect to be in a lower tax bracket in retirement, or your income is too high to contribute to a Roth. It's also useful if you have a large amount to invest and want immediate tax relief.

Choose a Roth IRA if you expect to be in a higher tax bracket in retirement, want tax-free growth and withdrawals, prefer flexibility in accessing your contributions, or want to leave tax-assistance programs to heirs. A Roth is also valuable if you're early in your career and in a relatively low tax bracket now.

Many people benefit from having both: a traditional IRA or 401(k) for immediate tax deductions, and a Roth for tax-free growth. The split depends on your income, your timeline, and your best guess about future tax rates. If you're unsure, starting with whichever account you're currently may be able to access for is a reasonable first step—the most important decision is to save consistently, regardless of which account type you choose.

Frequently Asked Questions

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

Yes. Your combined contributions to all IRAs cannot exceed the annual limit ($7,000 for 2024), but you can split that between a traditional and Roth if you want. Many people do this to get some immediate tax relief and some tax-free growth.

What happens to my Roth IRA if I die?

Your beneficiaries inherit the account and can withdraw the money tax-free (though they must follow distribution rules depending on their relationship to you). This is one reason a Roth is valuable for leaving money to heirs—they receive it without a tax bill.

Can I convert a traditional IRA to a Roth?

Yes, but you'll owe income tax on the amount converted in that year. This is called a Roth conversion and can make sense if you expect tax rates to rise or if you have a low-income year. There's no income limit on conversions, even if you can't contribute to a Roth directly.

What if my income is too high for a Roth?

You can still fund a Roth through a backdoor conversion: contribute to a traditional IRA (which has no income limit) and immediately convert it to a Roth. You'll owe tax on any earnings in the traditional account, but this strategy works if you have no other traditional IRA balances.

Do I have to choose one account type forever?

No. You can contribute to a traditional IRA one year and a Roth the next, depending on your income and circumstances. You can also convert between them. Your choice is not permanent, though conversions have tax consequences you should understand first.