The answer depends on your tax bracket now versus when you retire

Neither is objectively "better"—the right choice hinges on whether you want to pay taxes on the money going in or on the money coming out. A traditional IRA lets you deduct contributions from your income this year, lowering your tax bill now. A Roth IRA takes after-tax dollars, but withdrawals in retirement are tax-free. If you expect to be in a lower tax bracket when you retire, traditional makes sense. If you expect to be in the same bracket or higher, Roth usually wins.

The secondary factors—withdrawal rules, income limits, and what happens to your money before retirement—often matter more than the tax math, especially if you're young, changing jobs, or unsure about your future income.

Key Takeaways

  • Traditional IRA contributions reduce your taxable income this year; Roth contributions do not, but Roth withdrawals in retirement are completely tax-free.
  • You must have earned income to contribute to either account, and contribution limits are the same for both ($7,000 per year for 2024, or $8,000 if you're 50 or older).
  • Roth IRA has income limits that phase out your ability to contribute if you earn above a certain amount; traditional IRA has no income limit but contributions may not be deductible if you have a workplace retirement plan.
  • Roth lets you withdraw your contributions (not earnings) penalty-free at any age; traditional IRA penalizes withdrawals before 59½ with a 10% penalty plus income tax.
  • Traditional IRA requires you to start taking withdrawals at age 73; Roth has no required withdrawals during your lifetime.

When a traditional IRA makes more sense

Choose traditional if you want to lower your tax bill this year and expect your retirement income to be lower than it is now. A $7,000 contribution reduces your taxable income by $7,000, which can save you hundreds in federal tax depending on your bracket. This is especially useful if you had a high-income year and want to offset some of it.

Traditional also works well if you're self-employed or have inconsistent income. You can contribute to a traditional IRA even in years when you earn very little, as long as you had some earned income. The deduction carries forward if you can't use it all in the current year.

One catch: if you have access to a workplace retirement plan (a 401(k), 403(b), or similar), the deduction phases out once your income exceeds a threshold. For 2024, if you're single and covered by a workplace plan, the deduction begins to phase out at $77,000 of income and disappears entirely at $87,000. If you're married filing jointly, it phases out between $123,000 and $143,000. These numbers change yearly. If you're not covered by a workplace plan, there's no income limit on the deduction.

When a Roth IRA makes more sense

Choose Roth if you expect to be in a higher tax bracket in retirement, or if you simply want to avoid guessing. Roth contributions come from after-tax money, so you don't get a deduction now. But every dollar you withdraw in retirement—including all the growth—is tax-free. If you're young and have decades of compound growth ahead, Roth often wins because that growth escapes taxation entirely.

Roth is also the better choice if you want flexibility before retirement. You can withdraw your contributions (the money you put in) at any time, for any reason, without penalty or tax. You cannot touch the earnings without penalty until 59½, but the ability to access your contributions is a real safety net. Traditional IRA withdrawals before 59½ trigger a 10% penalty plus income tax on the entire amount.

Roth has income limits, though. For 2024, if you're single, you can contribute the full amount if your income is below $146,000. The contribution phases out between $146,000 and $161,000, and you cannot contribute at all above $161,000. If you're married filing jointly, the phase-out range is $230,000 to $240,000. These limits rise yearly. If you exceed the limit, you cannot use Roth—but you can still use traditional.

The tax-bracket question: how to think about it

The core trade-off is timing. With traditional, you pay tax at your current rate. With Roth, you pay tax at your current rate too, but you lock in that rate for the future—you never pay tax on the growth.

If you're in the 22% tax bracket now and expect to be in the 24% bracket in retirement, Roth wins: you pay 22% now instead of 24% later. If you're in the 24% bracket now and expect to drop to 12% in retirement, traditional wins: you save 12 percentage points by deducting now.

The problem is that nobody knows their future tax bracket with certainty. Tax law changes. Your income changes. Your spending in retirement might be higher or lower than you expect. If you're genuinely unsure, splitting contributions between both accounts—if you're may be able to access for both—hedges your bet. Some people contribute to traditional one year and Roth the next, depending on their income that year.

Required withdrawals and estate planning

Traditional IRA requires you to start taking withdrawals at age 73, whether you need the money or not. These withdrawals are taxed as ordinary income. If you don't take the required amount, the penalty is 25% of the shortfall (reduced to 10% if you correct it within two years). This matters if you're still working, don't need the money, or want to leave the account to heirs.

Roth has no required withdrawals during your lifetime. You can let it grow untouched for as long as you live. This makes Roth better for leaving money to heirs, since they inherit it tax-free (though they do have to withdraw it within ten years under current rules).

Contribution limits and catch-up contributions

Both accounts have the same annual contribution limit: $7,000 for 2024 (or $8,000 if you're 50 or older). You can contribute to both in the same year, but your combined contributions across all traditional and SEP and SIMPLE IRAs cannot exceed the limit. Roth contributions are separate if you have a workplace plan like a 401(k).

The catch-up contribution ($1,000 extra if you're 50+) applies to both. If you're behind on retirement savings, this is one of the few ways to save more without opening a separate account type.

Conversions and backdoor strategies

If your income is too high for Roth but you want Roth's tax-free growth, you can convert a traditional IRA to a Roth. You pay income tax on the amount converted, but the money then grows tax-free. This is called a Roth conversion.

A backdoor Roth is a specific strategy: you contribute to a traditional IRA (getting no deduction), then immediately convert it to Roth. You pay tax only on any earnings that accumulated in the traditional account between contribution and conversion—usually minimal if done quickly. This works even if your income is too high for direct Roth contributions. It's legal but requires careful record-keeping, so consult a tax professional before attempting it.

Frequently Asked Questions

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

Yes, you can own both. Your combined contributions to all traditional and Roth IRAs in a single year cannot exceed the annual limit ($7,000 for 2024), but you can split that between the two accounts however you want. Many people do this to hedge their tax-bracket bets.

What if I change my mind after I contribute?

You can recharacterize a contribution—move it from one account type to the other—as long as you do it before your tax return deadline (including extensions). This lets you undo a Roth contribution if your income turned out higher than expected, or undo a traditional contribution if you didn't get the deduction you wanted.

Do I have to contribute the maximum every year?

No. You can contribute any amount up to the limit, including zero. If you have a low-income year, you might contribute less. If you max out a 401(k) at work, you might contribute less to an IRA. There's no penalty for contributing less than the limit.

Which account should I fund first if I can only afford one?

If your employer offers a 401(k) match, fund that first—it's assistance programs. After that, if you expect higher taxes in retirement or want tax-free growth, Roth usually wins for younger people. If you want to lower your tax bill this year, traditional wins. If you're unsure, traditional is the safer choice because you get an immediate tax deduction.

What happens to my IRA if I die?

Your heirs inherit it, but they must withdraw it within ten years under current rules. Roth is better for heirs because they withdraw it tax-free. Traditional IRA withdrawals are taxed as ordinary income to the heir.