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 three things: your current tax bracket, where you think your bracket will be, and how much flexibility you want in retirement.

The tax bracket you are in now versus the one you expect in retirement is the single biggest factor in deciding which account type saves you the most money over your lifetime.

Key Takeaways

  • Roth contributions are made with after-tax dollars, so you pay tax now but withdraw tax-free in retirement; traditional contributions reduce your taxable income this year, but withdrawals are taxed as ordinary income.
  • You can withdraw Roth contributions (not earnings) anytime without penalty, while traditional IRA withdrawals before age 59½ trigger a 10% penalty plus income tax.
  • Traditional IRAs require you to take required minimum distributions (RMDs) starting at age 73, but Roths do not, which matters if you do not need the money.
  • If your income exceeds the limits set by the IRS each year, you cannot contribute directly to a Roth, though a backdoor Roth conversion may be an option.
  • The contribution limit is $7,000 per year for 2024 (or $8,000 if you are age 50 or older), and this limit applies across all IRAs you own combined.

How taxes work in each account type

In a traditional IRA, you deduct your contribution from your taxable income in the year you make it. If you contribute $7,000, your taxable income drops by $7,000 (assuming you meet income and coverage limits). The money grows tax-free inside the account. When you withdraw in retirement, every dollar is taxed as ordinary income at whatever your tax rate is then.

In a Roth IRA, you contribute money you have already paid income tax on. The $7,000 comes from after-tax dollars. The money grows tax-free, and when you withdraw in retirement, you owe nothing—not on the original contribution, not on the growth. This is the core difference: traditional defers tax to retirement, Roth pays tax upfront.

The math favors a Roth if your tax bracket rises between now and retirement. It favors a traditional IRA if your bracket falls. If you are in the 24% bracket now and expect to be in the 22% bracket in retirement, a traditional IRA saves you 2 percentage points on every dollar you withdraw. If you are in the 22% bracket now and expect to be in the 24% bracket in retirement, a Roth saves you 2 percentage points on every dollar of growth.

Access to your money before retirement

A Roth IRA lets you withdraw your contributions (the money you put in) anytime, tax-free and penalty-free. If you contributed $50,000 over ten years and the account grew to $65,000, you can pull out the $50,000 whenever you need it. You cannot touch the $15,000 in earnings without paying tax and a 10% penalty if you are under 59½.

A traditional IRA penalizes any withdrawal before age 59½. You owe income tax on the full amount plus a 10% penalty. There are narrow exceptions—disability, medical expenses above 7.5% of your adjusted gross income, and a few others—but they are specific and require documentation. If you think you might need the money before retirement, a Roth's contribution access is a real advantage.

Required minimum distributions and flexibility in retirement

Starting at age 73, the IRS requires you to withdraw a minimum amount from a traditional IRA each year, whether you need the money or not. The amount is calculated by dividing your account balance by a life expectancy factor the IRS publishes. These required minimum distributions (RMDs) are taxed as ordinary income and can push you into a higher tax bracket, which can also trigger higher Medicare premiums and tax on Social Security benefits.

A Roth IRA has no RMDs during your lifetime. If you do not need the money, you can leave it untouched and let it grow. This matters if you have other income sources in retirement or if you want to pass the account to heirs. It also matters if you want to control when you take money out instead of being forced to by the IRS.

Income limits and who can contribute

Traditional IRAs have no income limit. Anyone with earned income can contribute, regardless of how much they make. However, if you or your spouse are covered by a workplace retirement plan (like a 401(k)), the deduction phases out at higher incomes. You can still contribute, but you cannot deduct it from your taxes.

Roth IRAs have strict income limits that change each year. For 2024, if you are single, the ability to contribute phases out between $146,000 and $161,000 of modified adjusted gross income. If you are married filing jointly, it phases out between $230,000 and $240,000. If your income exceeds these limits, you cannot contribute directly to a Roth. A backdoor Roth conversion is a workaround: you contribute to a traditional IRA (non-deductible) and then convert it to a Roth, but this strategy has complications if you already have traditional IRA balances.

Contribution limits and catch-up contributions

Both account types have the same annual contribution limit: $7,000 for 2024 (or $8,000 if you are age 50 or older). The limit is the same whether you choose Roth, traditional, or split between them. You cannot contribute more than your earned income for the year, and the limit applies across all IRAs you own—you cannot put $7,000 in a Roth and $7,000 in a traditional in the same year.

If you are 50 or older, you can contribute an additional $1,000 as a catch-up contribution. This applies to both account types. The limits are set by the IRS and adjust annually for inflation.

Which choice fits common situations

Choose a Roth IRA if you are early in your career (lower bracket now, likely higher later), expect significant investment growth, want flexibility to access contributions, or want to avoid RMDs in retirement. Also choose Roth if your income is below the phase-out limits and you want to leave money to heirs tax-free.

Choose a traditional IRA if you are in a high tax bracket now and expect to be in a lower one in retirement, want to reduce your taxable income this year (especially if you are self-employed and owe self-employment tax), or your income exceeds Roth limits. Also choose traditional if you have little other retirement savings and need the immediate tax deduction.

Some people split contributions between both types. You might put $4,000 in a traditional IRA to reduce this year's taxes and $3,000 in a Roth for tax-free growth. The split depends on your specific situation and tax bracket.

Frequently Asked Questions

Can I convert a traditional IRA to a Roth?

Yes. You can convert all or part of a traditional IRA to a Roth at any time. 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 your tax bracket to rise or if you want to lock in a lower bracket in a year when your income is unusually low.

What happens to a Roth IRA if I die?

Your heirs inherit the account. They must withdraw the balance within ten years under current rules, but the withdrawals are tax-free. This makes a Roth a powerful wealth-transfer tool compared to a traditional IRA, where heirs owe income tax on withdrawals.

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

Yes, but your total contributions across both accounts cannot exceed the annual limit. 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 for 2024). The limit is combined, not separate.

What if my income changes after I contribute to a Roth?

You can contribute to a Roth in any year your income is below the phase-out limit. If your income rises later, it does not affect money already in the account. The limit applies only to new contributions in that tax year.

Is a Roth better if I am young?

Usually, yes—you have decades for the money to grow tax-free, and you are likely in a lower bracket now than you will be at retirement. But it depends on your specific situation. If you are young but in a very high bracket (say, a doctor or lawyer), a traditional IRA might save you more in taxes this year.