The choice depends on whether you want a tax break now or in retirement

A Roth IRA makes sense if you expect to be in a higher tax bracket when you retire, or if you want to withdraw money tax-free later. A traditional IRA makes sense if you want to reduce your taxable income this year and expect to be in a lower tax bracket in retirement. The real answer is: it depends on your current income, how much longer you'll work, and what you think tax rates will do.

Most people can open either type. The main difference is when you get the tax benefit. With a traditional IRA, you deduct contributions from your taxes now. With a Roth IRA, you pay taxes on the money going in, but the money grows and comes out tax-free. Both accounts have the same contribution limits and the same rules about when you can withdraw without penalty.

Key Takeaways

  • Traditional IRA contributions reduce your taxable income this year, but you pay taxes on withdrawals in retirement.
  • Roth IRA contributions are made with after-tax money, but withdrawals in retirement are completely tax-free.
  • If you earn above a certain income threshold, you cannot contribute to a Roth IRA, though you can always contribute to a traditional IRA.
  • A traditional IRA requires you to start taking withdrawals at age 73, while a Roth IRA has no withdrawal requirement during your lifetime.
  • You can contribute to both types in the same year, but your total across both cannot exceed the annual limit.

When a traditional IRA makes the most sense

Choose a traditional IRA if you want to lower your tax bill this year. Every dollar you contribute reduces your taxable income for that tax year. If you earn $60,000 and contribute $7,000 to a traditional IRA, you only report $53,000 in income to the IRS. That means a smaller tax bill right now.

This strategy works best if you are in a high tax bracket now and expect to be in a lower one in retirement. If you earn $150,000 this year but plan to live on $50,000 a year once you stop working, a traditional IRA lets you shift income from a year when you're taxed at 24% to years when you'll be taxed at 12%. You pocket the difference.

A traditional IRA is also the only option if your income is too high for a Roth. If you earn more than the Roth income limits (which change yearly and depend on your filing status), you cannot contribute to a Roth, but you can always contribute to a traditional IRA, regardless of how much you earn.

When a Roth IRA makes the most sense

Choose a Roth IRA if you expect to be in a higher tax bracket in retirement, or if you simply want the certainty of tax-free withdrawals. You pay taxes on the money now, at your current rate. Then the money grows for decades, and you never pay taxes on the growth or the withdrawals.

This is especially valuable if you are young and have decades of compound growth ahead. A dollar you put in a Roth at age 25 might become $10 by age 65, and you owe zero taxes on that $9 of growth. In a traditional IRA, you would owe taxes on the entire $10.

A Roth also gives you flexibility you do not get with a traditional IRA. You can withdraw your contributions (not the earnings) at any time without penalty or taxes. You can also leave the money untouched as long as you want—there is no age when you must start taking withdrawals. A traditional IRA requires you to start withdrawals at age 73, whether you need the money or not.

Income limits and who can contribute

Anyone with earned income can open and contribute to a traditional IRA. There are no income limits. You can earn $30,000 or $300,000 and still contribute, though if you have a workplace retirement plan (like a 401(k)), the tax deduction phases out at higher incomes.

Roth IRAs have income limits that change each year. For 2024, single filers can contribute the full amount if they earn less than $146,000. The ability to contribute phases out between $146,000 and $161,000. Married couples filing jointly can contribute fully if they earn less than $230,000, with the phase-out range ending at $240,000. If you earn above these thresholds, you cannot contribute to a Roth that year, though you can still use a traditional IRA.

These limits apply to your modified adjusted gross income, which is usually your regular income with a few adjustments. Your bank or brokerage will ask for your income when you open the account and can tell you whether you are within the limits.

Contribution limits and annual caps

Both Roth and traditional IRAs share the same annual contribution limit. For 2024, you can contribute up to $7,000 per year if you are under age 50. If you are 50 or older, you can contribute an additional $1,000 as a catch-up contribution, for a total of $8,000.

This limit is a combined total across all your IRAs. If you contribute $4,000 to a Roth and $3,000 to a traditional IRA in the same year, you have used $7,000 of your limit. You cannot contribute another $7,000 to a traditional IRA—you have already hit the cap.

The limit changes most years. The IRS adjusts it for inflation, usually in $500 increments. Check the IRS website or ask your bank what the current year's limit is when you open your account.

Tax treatment of withdrawals and required minimums

In a traditional IRA, every withdrawal is taxed as ordinary income. If you withdraw $10,000, you owe income tax on the full $10,000 at your current tax rate. This applies whether the money came from your contributions or from investment growth.

In a Roth IRA, withdrawals are tax-free as long as the account has been open for at least five years and you are at least 59½ years old (with some exceptions for disability or first-time home purchase). You can withdraw contributions at any time without taxes or penalty. Earnings come out tax-free only if you meet the age and five-year rules.

A traditional IRA requires you to start taking withdrawals at age 73. 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 do not, you pay a 25% penalty on the amount you should have withdrawn (reduced to 10% if you correct it within two years). A Roth IRA has no such requirement—you can leave the money untouched for your entire life.

How to decide between the two

Start by asking: Do I want a tax break this year, or do I want tax-free withdrawals later? If you are in a high tax bracket now and expect a lower one in retirement, a traditional IRA wins. If you are in a low bracket now and expect a higher one later, or if you simply want certainty and flexibility, a Roth wins.

Next, check whether you are may be able to access for a Roth. If your income is above the limit, the decision is made for you—use a traditional IRA. If you are below the limit, you have a real choice.

Consider your timeline. If you are young with 30+ years until retirement, a Roth's tax-free growth is powerful. If you are close to retirement and want to reduce this year's taxes, a traditional IRA is more useful. If you are unsure, you can split the difference: contribute to both in the same year, as long as your total does not exceed the annual limit.

You can also change your mind. You can convert a traditional IRA to a Roth later (though you will owe taxes on the conversion). You cannot convert a Roth back to a traditional IRA, but you can stop contributing to a Roth and start a traditional IRA instead.

Frequently Asked Questions

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

Yes. You can open both accounts and contribute to both in the same year. However, your total contributions across both accounts cannot exceed the annual limit. If you contribute $4,000 to a Roth, you can only contribute $3,000 to a traditional IRA that year (assuming the $7,000 limit for 2024).

What happens if I withdraw money from a Roth IRA before age 59½?

You can withdraw your contributions at any time without taxes or penalty. If you withdraw earnings before age 59½, you owe income tax on the earnings plus a 10% penalty, unless you may have access to for an exception like disability, first-time home purchase (up to $10,000 lifetime), or a Roth conversion.

Can I deduct traditional IRA contributions if I have a 401(k) at work?

It depends on your income. If you have a workplace retirement plan, the deduction for traditional IRA contributions phases out at higher incomes. For 2024, single filers begin losing the deduction at $77,000 and lose it completely at $87,000. Married couples filing jointly begin at $123,000 and lose it at $143,000. Check the IRS website for the current year's limits.

What is a Roth conversion, and should I do one?

A Roth conversion means moving money from a traditional IRA to a Roth IRA. You pay income tax on the amount converted, but then it grows tax-free. Conversions make sense if you expect tax rates to rise, or if you have a low-income year. They are complex, so talk to a tax professional before converting.

Which IRA grows money faster?

Both grow at the same rate—the difference is taxes, not growth. A Roth and a traditional IRA invested in the same funds will grow identically. The advantage of a Roth is that you keep all the growth tax-free. The advantage of a traditional IRA is the immediate tax deduction.