The answer depends on your income now and what you expect in retirement

Neither is objectively better. A Roth IRA makes sense if you expect to be in a higher tax bracket in retirement than you are now, or if you want to withdraw money tax-free and without required withdrawals. A traditional IRA makes sense if you want to reduce your taxable income this year, expect to be in a lower tax bracket in retirement, or earn too much to contribute to a Roth. The choice hinges on your current tax situation and your best guess about your future one.

The core trade-off is simple: traditional IRAs let you deduct contributions now (lowering this year's taxes), but you pay income tax on withdrawals in retirement. Roth IRAs take after-tax dollars now, but withdrawals in retirement are tax-free. Which one costs you less depends entirely on whether your tax rate will be higher or lower when you retire.

Key Takeaways

  • Traditional IRA contributions may lower your taxable income this year if you meet income limits, while Roth contributions are made with after-tax money but grow tax-free.
  • Roth IRAs have no required minimum distributions in your lifetime, so you can leave the money untouched longer; traditional IRAs require withdrawals starting at age 73.
  • You cannot contribute to a Roth IRA if your income exceeds certain thresholds, but there is no income limit for traditional IRA contributions (though the deduction phases out at higher incomes).
  • Roth withdrawals are tax-free in retirement; traditional IRA withdrawals are taxed as ordinary income at whatever your tax rate is then.
  • If you expect to earn significantly more in the future, a Roth now locks in today's lower tax rate; if you expect to earn less in retirement, a traditional IRA saves you taxes now.

How the tax deduction works for traditional IRAs

When you contribute to a traditional IRA, you may be able to deduct the full amount from your taxable income for that year. If you are single and your employer does not offer a 401(k) or similar plan, you can deduct the full contribution amount regardless of income. If your employer does offer a plan, the deduction phases out starting at $77,000 of modified adjusted gross income for 2024 (this threshold changes yearly).

If you are married filing jointly and neither spouse has access to an employer plan, you can both deduct your full contributions. If one spouse has access to a plan, that spouse's deduction phases out starting at $123,000 of modified adjusted gross income for 2024, while the other spouse can still deduct their contribution.

The deduction is valuable only if you itemize deductions or if it pushes you into a lower tax bracket. If your deduction does not reduce your taxable income (because you take the standard deduction instead), the tax benefit disappears.

Roth IRA income limits and the backdoor route

You cannot contribute directly to a Roth IRA if your income is too high. For 2024, the income limit for single filers is $146,000 (contributions phase out between $146,000 and $161,000). For married filing jointly, it is $230,000 (phasing out between $230,000 and $240,000). These limits change yearly.

If your income exceeds the limit, you have two options: contribute to a traditional IRA instead, or use a backdoor Roth strategy. A backdoor Roth means contributing to a traditional IRA (which has no income limit) and then converting it to a Roth. This works, but if you already have other traditional IRA balances, the conversion triggers taxes on a portion of the conversion amount. Consult a tax professional before attempting this, because the math depends on your specific situation.

Tax-free growth and withdrawals in a Roth

Money in a Roth IRA grows tax-free, and you never pay income tax on the earnings when you withdraw them in retirement—as long as the account has been open for at least five years and you are at least 59½ when you withdraw. This is the core advantage of a Roth: the longer your money sits, the more it grows without any tax bill attached.

You can also withdraw your contributions (not earnings) from a Roth at any time, tax-free and penalty-free. This makes a Roth more flexible than a traditional IRA if you need access to your money before retirement. Withdrawing earnings before 59½ normally triggers a 10% penalty plus income tax, but exceptions exist for first-time home purchases (up to $10,000 lifetime), disability, and a few other situations.

Required minimum distributions and flexibility

A traditional IRA requires you to begin taking withdrawals at age 73 (as of 2023; this age increases gradually). The IRS calculates the minimum amount based on your age and account balance, and you must withdraw at least that much each year or face a 25% penalty on the shortfall (reduced to 10% if you correct it within two years). These withdrawals are taxed as ordinary income.

A Roth IRA has no required minimum distributions during your lifetime. You can leave the money untouched as long as you want, letting it compound tax-free. Your heirs will inherit the account, though they will face different rules depending on when you die and whether they are spouses or non-spouses.

This flexibility matters if you do not need the money in retirement or want to pass a larger balance to heirs. It also matters if you want to control when you trigger a large tax bill—with a traditional IRA, the IRS forces you to take distributions whether you need them or not.

Comparing the tax brackets: now versus later

The decision between Roth and traditional often comes down to a simple question: Is your tax bracket now higher or lower than it will be in retirement?

If you are young, early in your career, and expect your income to rise significantly, a Roth locks in your current (lower) tax rate. You pay taxes on the contribution now at 22% or 24%, but in retirement you withdraw the money at 0%. If you are older, near the peak of your earning years, and expect to have less income in retirement, a traditional IRA saves you taxes now. You deduct the contribution at 32% or 35%, and in retirement you withdraw at 22% or 24%.

The complication: you cannot predict future tax rates. Congress could raise or lower income tax rates. Your retirement income could be higher or lower than you expect. If you are uncertain, splitting contributions between both account types hedges your bet.

Contribution limits and catch-up contributions

Both traditional and Roth IRAs have the same annual contribution limit: $7,000 for 2024 (or $8,000 if you are 50 or older). This limit applies to the combined total of all your traditional and Roth IRAs—you cannot contribute $7,000 to each. The limit changes yearly based on inflation.

If you are 50 or older, you can make an additional $1,000 catch-up contribution to either account type. This is useful if you did not max out contributions in earlier years and want to accelerate savings as you approach retirement.

Frequently Asked Questions

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

Yes, but your total contributions to both accounts combined cannot exceed the annual limit ($7,000 for 2024). You can split the contribution however you want—$5,000 to a Roth and $2,000 to a traditional, for example—but the combined total is the cap.

What happens to my Roth IRA if I die?

Your heirs inherit the account, but the rules depend on whether they are your spouse or not. Spouses can treat the Roth as their own or roll it into their own Roth. Non-spouse heirs must withdraw the entire balance within ten years (as of 2024 rules), though they do not owe income tax on the withdrawals because the money was already taxed when you contributed.

Can I convert a traditional IRA to a Roth?

Yes, but you will owe income tax on the amount converted in the year you convert it. If your traditional IRA holds $50,000 and you convert it all, you add $50,000 to your taxable income that year. This is why conversions make sense only if you expect to be in a lower tax bracket that year or if you have a long time horizon to let the Roth grow tax-free afterward.

Which account should I open if I am self-employed?

You have the same Roth and traditional IRA options as any other person, but you may also want to explore a Solo 401(k) or SEP IRA, which allow much higher contributions. Consult a tax professional to compare the options for your income level and business structure.

Do I pay taxes on Roth contributions?

You contribute after-tax dollars to a Roth, meaning the money has already been taxed as income. You do not get a deduction. The tax benefit comes later, when you withdraw the earnings tax-free in retirement.