The difference comes down to when you pay taxes

A traditional IRA lets you deduct contributions from your taxes now, but you pay income tax on the money when you withdraw it in retirement. A Roth IRA takes the opposite approach: you contribute money that has already been taxed, and then withdrawals in retirement are tax-free. Neither is universally "better"—which one makes sense depends on your current tax bracket, whether you expect to earn more or less in retirement, and how long you plan to keep the money invested.

The core trade-off is simple: pay taxes on the way in (Roth) or on the way out (traditional). If you think you'll be in a lower tax bracket when you retire, a traditional IRA saves you money now. If you think you'll be in the same bracket or a higher one, a Roth IRA usually wins because you lock in today's tax rate and never pay tax on the growth.

Key Takeaways

  • Traditional IRA contributions may reduce your taxable income this year, but withdrawals in retirement are taxed as ordinary income.
  • Roth IRA contributions are made with after-tax money, but may have access to withdrawals in retirement—including all growth—are completely tax-free.
  • You can only contribute to a Roth IRA if your income is below a certain threshold; traditional IRAs have no income limit but may have deduction limits if you have a workplace retirement plan.
  • Traditional IRAs require you to start taking withdrawals at age 73; Roth IRAs have no required withdrawals during your lifetime, giving you more control over when to take money out.
  • If you expect to be in a lower tax bracket in retirement, traditional usually saves more money; if you expect to be in the same or higher bracket, Roth usually wins.

How taxes work with each account type

With a traditional IRA, you contribute pre-tax dollars. If you earn $60,000 and contribute $7,000 to a traditional IRA, your taxable income drops to $53,000 for that year (assuming you meet the deduction rules). You pay no tax on that $7,000 now. But when you withdraw money at 67 or 72, every dollar comes out as taxable income at whatever your tax rate is that year.

With a Roth IRA, you contribute money you've already paid taxes on. That $7,000 comes from your after-tax paycheck. You get no tax deduction this year. But when you withdraw that $7,000 plus all the growth it earned—say it grew to $25,000—you owe zero federal income tax on any of it, as long as you follow the withdrawal rules.

The math works in your favor with a Roth if tax rates are higher when you retire than they are now, or if you simply want certainty. You know exactly what you'll owe (nothing) instead of guessing what tax rates will be in 20 or 30 years.

Income limits and who can contribute

Anyone with earned income can open and contribute to a traditional IRA. There is no income limit. 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 income levels. The phase-out ranges change each year and depend on your filing status.

Roth IRAs have strict income limits. If you earn above a certain threshold, you cannot contribute directly to a Roth IRA at all. For 2024, single filers begin to phase out at $146,000 and are completely blocked at $161,000; married couples filing jointly phase out starting at $230,000 and are blocked at $240,000. These numbers adjust annually. If your income exceeds the limit, you can still fund a Roth through a "backdoor Roth" strategy, but that involves more steps and tax considerations.

A traditional IRA has no income limit, which makes it the only option for high earners who want to save in an IRA. But the tax deduction may be limited or unavailable if you have a workplace plan.

Required withdrawals and flexibility

Traditional IRAs force you to start withdrawing money at age 73. The IRS calls this a required minimum distribution, or RMD. You must withdraw a calculated amount each year, and if you don't, you face a penalty of 25 percent of the amount you should have withdrawn (reduced to 10 percent if you correct it within two years). This matters because it can push you into a higher tax bracket or affect other benefits like Medicare premiums.

Roth IRAs have no required withdrawals during your lifetime. You can leave the money untouched for as long as you want, letting it grow tax-free. This gives you control: you can withdraw when it makes sense for your taxes, or leave it to heirs. Your heirs will eventually have to withdraw it, but you don't have to during your life.

If you want maximum flexibility and don't need the money immediately, a Roth's lack of required withdrawals is a significant advantage. If you're already in a high tax bracket and want to minimize taxable income, a traditional IRA's required withdrawals can be a drawback.

Early withdrawal rules and penalties

Both account types penalize you for withdrawing before age 59½. With a traditional IRA, any withdrawal before 59½ is taxed as ordinary income plus a 10 percent penalty—unless an exception applies (disability, medical expenses, first-time home purchase up to $10,000, and a few others).

Roth IRAs are more flexible. You can withdraw your contributions (the money you put in) at any time, tax-free and penalty-free. You can only withdraw the earnings (growth) before 59½ if an exception applies. This distinction matters: if you contribute $7,000 and it grows to $10,000, you can pull out the $7,000 anytime without penalty, but the $3,000 in earnings is locked until 59½ unless you may have access to for an exception.

This flexibility makes Roth IRAs useful as an emergency fund if you need access to your contributions. A traditional IRA offers no such option—any early withdrawal triggers both tax and penalty.

Which account makes sense for your situation

Choose a traditional IRA 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. It's also the right choice if you have no workplace retirement plan and want the immediate tax break.

Choose a Roth IRA if you expect to be in the same or higher tax bracket in retirement, want tax-free growth and withdrawals, prefer flexibility (no required withdrawals), or want to leave tax-assistance programs to heirs. It's also the better choice if you're young and have decades for the account to grow, because you lock in today's tax rate on a much smaller contribution and let decades of growth happen tax-free.

If you're unsure, consider your age and income trajectory. Early in your career, when your income is lower, a Roth often wins because you're paying a lower tax rate now and locking it in. Late in your career, when you're in a high tax bracket and expect to drop in retirement, a traditional IRA often saves more money.

You can have both

You don't have to choose one or the other permanently. You can open both a traditional IRA and a Roth IRA in the same year. However, your total contributions across both accounts cannot exceed the annual limit—$7,000 for 2024 if you're under 50, or $8,000 if you're 50 or older. If you contribute $4,000 to a traditional IRA, you can only contribute $3,000 to a Roth that year.

Some people split contributions between both accounts to hedge their bets on future tax rates. Others max out a Roth while they're young and in a low bracket, then switch to a traditional IRA later when their income rises. The flexibility to use both gives you options as your situation changes.

Frequently Asked Questions

Can I convert a traditional IRA to a Roth IRA?

Yes. You can convert all or part of a traditional IRA to a Roth IRA at any time. You'll owe income tax on the amount you convert in that year, but the money then grows tax-free in the Roth. This strategy, called a "Roth conversion," makes sense if you expect tax rates to rise or want to lock in a lower tax bracket before retirement.

What happens to my IRA if I die?

Your heirs inherit the account. With a traditional IRA, they owe income tax on withdrawals. With a Roth IRA, they can withdraw tax-free. Most heirs must empty inherited IRAs within 10 years, though the rules vary by relationship and account type. A Roth is often better for leaving money to the next generation because they avoid the tax bill.

Can I have an IRA if I'm self-employed?

Yes, but you may benefit more from a SEP IRA or Solo 401(k), which allow much larger contributions. You can still open a traditional or Roth IRA alongside these plans, but the higher-contribution accounts are usually the better choice for self-employed people with significant income.

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

If your income rises above the Roth limit after you've already contributed, your contribution stands—you don't have to withdraw it. However, you cannot make new contributions the following year if you're over the limit. You can still do a backdoor Roth conversion if you want to keep saving.

Do I pay taxes on IRA growth every year?

No. With both traditional and Roth IRAs, you pay no annual tax on growth inside the account. With a traditional IRA, you pay tax only when you withdraw. With a Roth, you never pay tax on the growth. This is one of the main reasons IRAs are valuable—the tax-sheltered growth compounds over decades.