The core difference: when you pay taxes

A traditional IRA lets you deduct contributions from your taxable income in the year you make them, lowering what you owe the IRS that year. A Roth IRA does not give you a deduction now — you contribute after-tax dollars — but the money grows tax-free and you withdraw it tax-free in retirement. The choice between them hinges on whether you expect to be in a higher or lower tax bracket when you retire.

If you think your tax rate will be lower in retirement than it is now, a traditional IRA makes sense: you save taxes today at a high rate and pay taxes later at a low rate. If you think your tax rate will be the same or higher in retirement, a Roth IRA is usually better: you pay taxes now at today's rate and owe nothing later.

Key Takeaways

  • Traditional IRA contributions may reduce your taxable income this year, while Roth IRA contributions do not, but Roth withdrawals in retirement are tax-free.
  • You must begin taking required minimum distributions from a traditional IRA at age 73, but Roth IRAs have no withdrawal requirement during your lifetime.
  • Roth IRAs have income limits that may prevent high earners from contributing directly, while traditional IRAs have no income cap.
  • Both accounts have the same annual contribution limit, currently $7,000 for those under 50 and $8,000 for those 50 and older.
  • Roth IRAs allow you to withdraw your contributions (not earnings) at any time without penalty, while traditional IRAs penalize early withdrawals before age 59½.

Income limits and who can contribute

A traditional IRA has no income limit — anyone with earned income can open one and contribute. However, if you or your spouse have access to a workplace retirement plan like a 401(k), your ability to deduct traditional IRA contributions phases out at higher incomes. For 2024, if you are covered by a workplace plan, the deduction begins to phase out at $77,000 of income (single filer) or $123,000 (married filing jointly). You can still contribute to a traditional IRA above those thresholds, but the contribution will not be tax-deductible.

Roth IRAs have direct income limits. For 2024, you can contribute the full amount if your income is below $146,000 (single) or $230,000 (married filing jointly). Above those thresholds, your contribution limit shrinks, and at $161,000 (single) or $240,000 (married), you cannot contribute directly to a Roth at all. High earners can work around this using a "backdoor Roth" strategy, which involves contributing to a traditional IRA and then converting it to a Roth, though this has tax complications if you already hold traditional IRA balances.

Tax treatment of withdrawals and required distributions

When you withdraw from a traditional IRA in retirement, the entire withdrawal is taxed as ordinary income. You deferred the tax when you contributed, so you pay it when you take the money out. This applies to all withdrawals, whether they come from your original contributions or from investment gains.

Roth IRA withdrawals are tax-free if the account has been open for at least five years and you are age 59½ or older. You can withdraw your contributions anytime without tax or penalty, since you already paid tax on that money. Withdrawals of earnings before age 59½ are subject to income tax and a 10% penalty, with some exceptions for hardship.

At age 73, you must begin taking required minimum distributions (RMDs) from a traditional IRA. The IRS calculates the amount based on your age and account balance, and you owe income tax on whatever you withdraw. Roth IRAs have no RMD requirement during your lifetime, which makes them useful if you do not need the money and want to leave a tax-free inheritance.

Contribution limits and catch-up contributions

Both traditional and Roth IRAs share the same annual contribution limit: $7,000 per year for those under age 50, and $8,000 for those 50 and older (the extra $1,000 is called a catch-up contribution). These limits apply to your combined contributions across all IRAs you own — you cannot contribute $7,000 to a traditional IRA and another $7,000 to a Roth in the same year.

The contribution limit is set by the IRS and changes periodically to account for inflation. For the most current limit, check the IRS website or your financial institution.

Early withdrawal rules and flexibility

Traditional IRAs penalize withdrawals before age 59½ with a 10% penalty plus income tax on the amount withdrawn. There are exceptions — you can withdraw penalty-free for a first-time home purchase (up to $10,000 lifetime), medical expenses above 7.5% of your income, disability, or a few other narrow circumstances — but the money is still taxed as income.

Roth IRAs are more flexible. You can withdraw your contributions at any time, tax-free and penalty-free, because you already paid tax on that money. Withdrawals of earnings before age 59½ trigger the 10% penalty and income tax, but the ability to access your contributions without penalty makes a Roth useful as an emergency fund if needed. This flexibility is one reason younger savers often prefer Roths.

Spousal IRAs and married couples

If one spouse has earned income and the other does not, the earning spouse can open a spousal IRA in the non-earning spouse's name and contribute on their behalf. This works for both traditional and Roth IRAs. The contribution limit is still $7,000 (or $8,000 if age 50+) per person, so a married couple can each have their own IRA and contribute up to $14,000 combined (or $16,000 if both are 50+).

Spousal IRAs are useful for couples where one partner stays home or has very low income. The earning spouse's income determines whether contributions are deductible (for traditional) or allowed (for Roth), not the non-earning spouse's income.

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 earn too much to contribute directly to a Roth. It also makes sense if you are self-employed and want to pair it with a SEP-IRA or Solo 401(k) for higher contribution limits.

Choose a Roth IRA if you are early in your career (likely to be in a higher tax bracket later), want tax-free growth and withdrawals, prefer flexibility to access your contributions, or want to avoid required minimum distributions. Roths are also better if you expect to leave money to heirs, since they inherit the account tax-free.

You do not have to choose one forever. You can own both a traditional and a Roth IRA at the same time, though your annual contribution limit applies across both accounts combined. Some people split contributions between the two to hedge against uncertainty about future tax rates.

Frequently Asked Questions

Can I convert a traditional IRA to a Roth IRA?

Yes. You can convert all or part of a traditional IRA balance to a Roth in a process called a Roth conversion. You will owe income tax on the amount converted in that tax year, but the money then grows tax-free in the Roth. This is useful if you expect tax rates to rise or want to lock in a lower tax rate now.

What happens to my IRA if I die?

Your beneficiary inherits the IRA and can take distributions over their lifetime (or in a lump sum, depending on the rules). With a traditional IRA, they owe income tax on distributions. With a Roth IRA, distributions are tax-free. Roth IRAs are often better for leaving to heirs because of this tax advantage.

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

Yes, but your annual contribution limit applies to both combined. If you contribute $4,000 to a traditional IRA, you can only contribute $3,000 to a Roth that year (assuming the $7,000 limit). You cannot exceed the total limit by splitting between accounts.

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

You can use a backdoor Roth: contribute to a traditional IRA (which has no income limit) and then convert it to a Roth. You will owe tax on any gains during the conversion, and this strategy is complicated if you already hold traditional IRA balances. A tax professional can help you determine if it makes sense for your situation.

Do I have to use the same bank or brokerage for both accounts?

No. You can open a traditional IRA at one institution and a Roth IRA at another. Some people do this to keep accounts organized or to take advantage of different investment options at different firms.