The choice depends on your tax bracket now versus what you expect in retirement

Choose a Roth IRA if you are in a lower tax bracket now than you expect to be in retirement, or if you want to withdraw money tax-free later. Choose a traditional IRA if you are in a higher tax bracket now and expect to be in a lower one when you retire, because you can deduct contributions from your taxable income this year.

The core trade-off is simple: traditional IRAs let you reduce your taxes today, while Roth IRAs let you avoid taxes on growth and withdrawals later. Which one saves you more money depends on whether your tax rate will go up or down between now and retirement. If you are unsure, a Roth is often the safer choice for younger workers, because tax rates are historically low and you have decades for tax-free growth to compound.

Key Takeaways

  • Traditional IRA contributions reduce your taxable income this year if you meet income limits, but you pay income tax on withdrawals in retirement.
  • Roth IRA contributions are made with after-tax money, but withdrawals in retirement are tax-free, and you can withdraw contributions (not earnings) anytime without penalty.
  • Income limits apply to Roth IRAs; if you earn above the threshold, you cannot contribute directly, though a backdoor Roth conversion may be an option.
  • Traditional IRAs require you to start taking withdrawals at age 73, while Roth IRAs have no required withdrawals during your lifetime.
  • If you have access to a workplace 401(k), your ability to deduct traditional IRA contributions phases out at higher incomes.

When a traditional IRA makes sense

A traditional IRA is the right choice if you want to lower your taxable income this year and you expect to be in a lower tax bracket in retirement. This is common for high earners in their peak earning years, or for people who plan to retire early and live on less money.

The tax deduction is immediate and real. If you contribute $7,000 to a traditional IRA and you are in the 24% federal tax bracket, you save $1,680 in federal taxes this year. That money stays in your account and compounds. When you withdraw it in retirement, you pay income tax on the full amount at whatever your tax rate is then — but if you are retired and earning less, that rate may be lower.

However, if you have a workplace 401(k) or 403(b), the deduction phases out at higher incomes. For 2024, if you are single and covered by a workplace plan, you cannot deduct traditional IRA contributions if your income exceeds $77,000. If you are married filing jointly, the limit is $123,000. These thresholds change yearly. If your income is above the limit, a traditional IRA gives you no tax benefit, and a Roth becomes more attractive.

When a Roth IRA makes sense

A Roth IRA is the right choice if you are in a lower tax bracket now than you expect to be in retirement, or if you simply want the flexibility of tax-free withdrawals later. This is especially true for younger workers, because you have 40+ years for earnings to grow tax-free, and tax rates may rise in the future.

The Roth also offers flexibility that a traditional IRA does not. You can withdraw your contributions (the money you put in) anytime, tax-free and penalty-free. You cannot touch the earnings without paying tax and a 10% penalty before age 59½, but the ability to access your contributions in an emergency is valuable. A traditional IRA penalizes any withdrawal before 59½ unless you meet a narrow exception.

Roth IRAs also have no required minimum distributions. Once you turn 73, you must start withdrawing from a traditional IRA whether you need the money or not. With a Roth, you can leave the money untouched and let it grow, or withdraw only what you need. This makes a Roth useful for people who do not need the retirement income and want to pass money to heirs tax-free.

Income limits and the backdoor Roth option

Roth IRA contributions are limited by income. For 2024, if you are single, you cannot contribute to a Roth if your income exceeds $146,000. If you are married filing jointly, the limit is $230,000. These limits phase in gradually — you can contribute a reduced amount between $131,000 and $146,000 (single) or $206,000 and $230,000 (married). The limits change each year.

If your income is above the limit, you cannot contribute directly to a Roth. However, a backdoor Roth conversion is a legal workaround: you contribute to a traditional IRA (which has no income limit), then immediately convert it to a Roth and pay tax on the conversion. This is not a loophole — the IRS allows it — but it requires careful execution. If you have other traditional IRA balances, the conversion can trigger unexpected tax consequences. Consult a tax professional before attempting a backdoor Roth.

Tax rates and your retirement timeline

The decision between Roth and traditional often hinges on whether you think tax rates will rise or fall. If you believe tax rates will be higher in retirement, a Roth locks in today's lower rate. If you believe they will be lower, a traditional IRA lets you defer tax to a lower-rate year.

Historically, tax rates have been higher than they are now. The current federal income tax brackets are set to expire at the end of 2025 unless Congress extends them. If rates rise, anyone who chose a traditional IRA will pay more tax on withdrawals than they saved by deducting contributions. This is one reason younger workers often benefit from a Roth: they have time to benefit from decades of tax-free growth, and they lock in today's rates before they potentially rise.

If you are close to retirement and expect to drop into a much lower tax bracket, a traditional IRA is more attractive. If you are young and unsure, a Roth is usually the safer bet.

Contribution limits and catch-up contributions

Both Roth and traditional IRAs have the same annual contribution limit: $7,000 for 2024 if you are under 50, or $8,000 if you are 50 or older. The catch-up contribution of $1,000 extra applies to both account types. These limits are set by law and change periodically.

You can contribute to both a Roth and a traditional IRA in the same year, but your combined contributions cannot exceed the annual limit. If you contribute $4,000 to a Roth, you can contribute only $3,000 to a traditional IRA that year.

Required minimum distributions and estate planning

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 pay income tax on the full withdrawal. If you do not take the RMD, you face a 25% penalty on the amount you should have withdrawn (or 10% if you correct it within two years).

A Roth IRA has no RMD requirement during your lifetime. This makes it valuable for estate planning: you can leave a Roth to heirs, and they inherit it tax-free (though they must withdraw it within 10 years under current rules). A traditional IRA passes to heirs with a tax bill attached — they must pay income tax on withdrawals.

Frequently Asked Questions

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

Yes, you can hold both accounts simultaneously. Your combined contributions across all IRAs cannot exceed the annual limit ($7,000 for 2024 if you are under 50). Many people use both: a traditional IRA for the immediate tax deduction and a Roth for tax-free growth, splitting their contribution between the two.

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

You can withdraw your contributions anytime, tax-free and penalty-free. If you withdraw earnings before 59½, you pay income tax on the earnings plus a 10% penalty, unless you meet a narrow exception (first-time home purchase up to $10,000 lifetime, disability, or a few others). With a traditional IRA, any withdrawal before 59½ triggers the 10% penalty on the full amount, unless you meet an exception.

If I have a 401(k) at work, should I still open an IRA?

Yes. A 401(k) and an IRA are separate accounts with separate limits. You can contribute to both in the same year. Many people max out their 401(k) first (especially if the employer matches), then open an IRA to save additional money. However, if you have a workplace plan, your ability to deduct traditional IRA contributions phases out at higher incomes, so a Roth may be more useful.

Can I convert a traditional IRA to a Roth later?

Yes. You can convert a traditional IRA to a Roth at any age, but you must pay income tax on the full amount converted in the year you do it. This is useful if you expect tax rates to rise, or if you retire early and have a low-income year. Plan the conversion carefully with a tax professional, because a large conversion can push you into a higher bracket and trigger other tax consequences.

Which account grows faster, Roth or traditional?

Both grow at the same rate inside the account — the difference is taxes. A Roth grows tax-free, so you keep all the growth. A traditional IRA grows tax-deferred, meaning you do not pay tax until withdrawal. Over decades, the tax-free growth of a Roth usually wins if tax rates are the same, because you never pay tax on the earnings. But if your tax rate drops significantly in retirement, a traditional IRA may leave you with more after-tax money.