The core difference: when you pay taxes

A traditional IRA lets you deduct contributions from your income 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 after-tax dollars (no deduction today), but withdrawals in retirement are tax-free.

This single difference ripples through every other rule. Which one makes sense for you depends on whether you expect to be in a higher tax bracket now or in retirement, and how long you plan to leave the money untouched.

Key Takeaways

  • Traditional IRA contributions may lower your taxable income this year, but you owe income tax on all withdrawals later; Roth contributions use after-tax money, but may have access to withdrawals are completely tax-free.
  • Traditional IRAs require you to start taking withdrawals at age 73 (as of 2023); Roth IRAs have no required withdrawals during your lifetime, letting money grow longer.
  • You can withdraw Roth contributions (not earnings) at any time without penalty; traditional IRA early withdrawals before age 59½ usually trigger a 10% penalty plus income tax.
  • Income limits restrict who can contribute to a Roth IRA; traditional IRAs have no income limit, though the tax deduction phases out for high earners with a workplace retirement plan.
  • Both accounts grow tax-free year to year, and both have the same annual contribution limit (currently $7,000 for those under 50, $8,000 for those 50 and older).

How taxes work during contribution and withdrawal

With a traditional IRA, you contribute pre-tax money. If you earn $60,000 and contribute $7,000, your taxable income for that year drops to $53,000 (assuming you meet the deduction requirements). You file the contribution on your tax return, and the IRS reduces what you owe that year.

When you withdraw that $7,000 in retirement—along with all the growth it earned—you pay ordinary income tax on the full amount. If you withdraw $50,000 from a traditional IRA in a year when you have other income, that $50,000 gets added to your taxable income for that year.

A Roth IRA works backward. You contribute $7,000 of money you've already paid income tax on. You get no deduction. But when you withdraw that $7,000 plus all its growth in retirement, you owe zero income tax on any of it—as long as the account has been open at least five years and you are age 59½ or older.

Required withdrawals and how long money can stay invested

Traditional IRAs force you to start withdrawing money at age 73 (this age changed from 72 in 2023 under the SECURE 2.0 Act). The IRS calculates a minimum amount you must withdraw each year based on your age and account balance. If you do not withdraw enough, you pay a 25% penalty on the shortfall (reduced to 10% if you correct it within two years).

Roth IRAs have no required withdrawals while you are alive. You can leave the money untouched for decades if you do not need it, letting compound growth work longer. This makes a Roth especially valuable if you want to pass money to heirs or do not plan to spend all your retirement savings.

Early withdrawal rules and penalties

If you need money before retirement, the rules differ sharply. With a traditional IRA, any withdrawal before age 59½ is subject to a 10% early withdrawal penalty plus income tax on the full amount. A $10,000 withdrawal might net you only $7,000 after taxes and penalty. Some exceptions exist—disability, medical expenses, first-time home purchase up to $10,000—but they are narrow.

A Roth IRA is more flexible. You can withdraw your contributions (the money you put in) at any time, tax-free and penalty-free. You cannot touch the earnings (growth) before 59½ without penalty, but the ability to access contributions makes a Roth useful as an emergency backup. This flexibility appeals to younger savers who are uncertain whether they will need the money.

Income limits and who can contribute

Traditional IRAs have no income limit. Anyone with earned income can open one. However, if you or your spouse have a workplace retirement plan (like a 401(k)), the tax deduction phases out at higher incomes. In 2024, the deduction begins to phase out at $77,000 for single filers with a workplace plan, and $123,000 for married couples filing jointly where the earning spouse has a plan. You can still contribute, but you will not get the tax break.

Roth IRAs have strict income limits. In 2024, the ability to contribute phases out between $146,000 and $161,000 for single filers, and $230,000 and $240,000 for married couples filing jointly. If your income exceeds the limit, you cannot contribute directly to a Roth—though a "backdoor Roth" strategy exists for high earners (converting a traditional IRA to a Roth), which requires careful planning.

Investment growth and fees

Both account types grow tax-free year to year. Whether you own stocks, bonds, mutual funds, or ETFs inside the account, you pay no annual tax on dividends or capital gains. This tax-deferred growth is one of the biggest advantages of either IRA over a regular taxable brokerage account.

Fees depend on your provider and what you invest in, not on the account type. A traditional IRA and a Roth IRA at the same brokerage will have the same investment options and the same costs. The difference is purely in the tax treatment of contributions and withdrawals.

Which one 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 have income too high for a Roth. It is also simpler if you have a workplace retirement plan and want the immediate tax deduction.

Choose a Roth IRA if you are young and expect your income to rise, want tax-free withdrawals in retirement, prefer flexibility to access contributions early, or want to leave tax-assistance programs to heirs. A Roth also makes sense if you expect tax rates to be higher in the future or want to reduce required withdrawals in retirement.

Many people benefit from splitting contributions between both types—a strategy called "tax diversification." This gives you both pre-tax and after-tax money in retirement, letting you manage your tax bill year to year.

Frequently Asked Questions

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

Yes. Your total contributions across all IRAs cannot exceed the annual limit ($7,000 in 2024 for those under 50), but you can split that between accounts. Many people maintain both to hedge against tax uncertainty and gain flexibility in retirement.

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

You can withdraw your contributions anytime penalty-free. Withdrawals of earnings before 59½ trigger a 10% penalty and income tax, unless you may have access to for an exception like disability or a first-time home purchase (up to $10,000 lifetime). The five-year rule still applies—the account must have been open at least five years.

Can I convert a traditional IRA to a Roth?

Yes, and there is no income limit on conversions. You pay income tax on the amount converted that year, but future growth is tax-free. This is how high earners fund a Roth when direct contributions are blocked by income limits. Plan conversions carefully with a tax professional, as they can push you into a higher bracket.

Do I pay taxes on traditional IRA growth before I withdraw?

No. Growth inside a traditional IRA is tax-deferred—you pay no annual tax on dividends, interest, or capital gains. You only pay income tax when you withdraw the money. This is true for Roth accounts too, except Roth withdrawals are tax-free.

What if I need my Roth money for an emergency?

You can withdraw your contributions without penalty or tax at any time. If you need more than you contributed, you will owe a 10% penalty and income tax on the earnings portion unless you meet an exception. This makes a Roth a reasonable backup emergency fund, unlike a traditional IRA.