The core difference: when you pay taxes

A Roth IRA lets you put in after-tax money now and withdraw it tax-free later. A traditional IRA lets you deduct contributions from your taxes now, but you pay income tax on withdrawals in retirement. That single difference shapes everything else about how each account works.

Neither is universally "better." The right choice depends on whether you think your tax rate will be higher now or in retirement, and on your income level right now. If you expect to earn more later, a Roth makes sense. If you expect to earn less, a traditional IRA often makes more sense.

Key Takeaways

  • Roth contributions are made with after-tax dollars, but may have access to withdrawals in retirement are completely tax-free; traditional contributions may be tax-deductible now, but all withdrawals are taxed as income later.
  • Roth IRAs have no required minimum distributions in your lifetime, while traditional IRAs force you to start withdrawing at age 73, whether you need the money or not.
  • Roth IRAs have income limits that phase out your contribution room if you earn above a certain threshold; traditional IRAs have no income limits, but the tax deduction phases out if you have a workplace retirement plan.
  • You can withdraw Roth contributions (not earnings) at any time without penalty; traditional IRA withdrawals before age 59½ usually trigger a 10 percent penalty plus income tax.
  • Both accounts have the same annual contribution limit, which changes each year and is the same whether you choose Roth or traditional.

Income limits and who can contribute

Roth IRAs have income phase-out ranges. If your modified adjusted gross income (MAGI) falls within that range, your contribution room shrinks. If you exceed the top of the range, you cannot contribute to a Roth at all that year. These ranges change annually and depend on your filing status (single, married filing jointly, etc.).

Traditional IRAs have no income limit on who can contribute. However, if you have access to a workplace retirement plan like a 401(k), the tax deduction for your traditional IRA contribution phases out at higher income levels. This means you can still put money in, but you may not get the tax break. The phase-out ranges also change each year and depend on filing status.

If your income is too high for a Roth but you want one anyway, some people use a "backdoor Roth" strategy: they contribute to a traditional IRA and then convert it to a Roth. This is legal but has tax consequences and requires careful record-keeping. A tax professional can walk you through whether this makes sense for your situation.

Tax deductions and withdrawals

With a traditional IRA, you may deduct your contribution on your tax return the year you make it. That deduction lowers your taxable income for that year. When you withdraw money in retirement, the full amount is taxed as ordinary income at whatever your tax rate is then.

With a Roth IRA, you get no deduction now. But if you follow the rules, your withdrawals in retirement are tax-free. Specifically, you must be at least 59½ years old and have held the account for at least five tax years. If you withdraw earnings before meeting both conditions, you owe income tax on the earnings plus a 10 percent penalty.

Roth contributions themselves can be withdrawn anytime without tax or penalty — you already paid tax on that money. Only the earnings are restricted. This makes a Roth more flexible if you need access to your money before retirement, though using retirement savings for non-retirement purposes defeats the purpose of saving.

Required withdrawals in retirement

Traditional IRAs require you to start taking withdrawals at age 73. The IRS calculates a minimum amount based on your age and account balance, and you must withdraw at least that much each year. These are called required minimum distributions (RMDs). If you do not take the full amount, you owe a penalty on the shortfall.

Roth IRAs have no required minimum distributions during your lifetime. You can leave the money untouched as long as you want, which means it keeps growing tax-free. This makes a Roth useful if you do not need the money in retirement or want to leave it to heirs. Your beneficiaries will eventually have to withdraw the money, but on a different schedule.

This difference matters most if you are still working past age 73 or do not need retirement income right away. A traditional IRA forces you to take taxable withdrawals whether you want them or not, which can push you into a higher tax bracket or affect other benefits.

Contribution limits and catch-up contributions

Both Roth and traditional IRAs share the same annual contribution limit. For 2024, that limit is $7,000 per year (or $8,000 if you are age 50 or older, using the catch-up provision). The limit changes most years and is announced by the IRS in October for the following year.

You can split your contribution between a Roth and a traditional IRA in the same year, but your total across both cannot exceed the annual limit. For example, you could contribute $4,000 to a Roth and $3,000 to a traditional IRA in one year, but not $7,000 to each.

If you have a workplace retirement plan like a 401(k), that has its own separate limit and does not count against your IRA limit. You can max out both in the same year if your income allows it.

Inherited IRAs and beneficiaries

When you leave a Roth IRA to a beneficiary, they inherit the account tax-free, but they must withdraw the money within a set timeframe (usually 10 years under current rules). The withdrawals themselves are tax-free if the account met the five-year holding requirement.

When you leave a traditional IRA to a beneficiary, they inherit it but must pay income tax on withdrawals. The withdrawal timeline is the same (usually 10 years), but the tax bill is larger. This makes a Roth a better wealth-transfer tool if you have the income to fund it now.

Which account to choose: a practical framework

Choose a Roth IRA if: you are early in your career and expect your income to rise significantly, you want tax-free withdrawals in retirement, you do not need the money before retirement, or you want to leave money to heirs without a tax bill. You also need to be below the Roth income limits.

Choose a traditional IRA if: you are in a high tax bracket now and expect to be in a lower one in retirement, you want to reduce your taxable income this year, your income is too high for a Roth, or you have access to a workplace plan and want to maximize tax deductions. You also benefit if you need the flexibility of required minimum distributions to manage your retirement income.

Many people benefit from having both. You could contribute to a traditional IRA in years when you have high income and a Roth in years when your income is lower. A tax professional can model your specific situation and show you the long-term difference between the two.

Frequently Asked Questions

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

Yes. Your annual contribution limit applies to the total across all IRAs you own, but you can split it however you want. Many people maintain both accounts and contribute to each strategically depending on their income and tax situation that year.

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

You can withdraw your contributions anytime without penalty. Withdrawals of earnings before age 59½ trigger income tax on the earnings plus a 10 percent penalty, unless you meet a narrow exception (like a disability or first-time home purchase up to $10,000). Roth contributions are always penalty-free because you already paid tax on them.

If my income is too high for a Roth, can I still get one somehow?

A backdoor Roth conversion is one strategy: you contribute to a traditional IRA and then convert it to a Roth. This works legally, but if you have other traditional IRA balances, the conversion triggers taxes on a portion of the conversion amount. Consult a tax professional before attempting this, as the math is complex and mistakes are costly.

Do I have to withdraw from my IRA in retirement?

With a Roth, no — not during your lifetime. With a traditional IRA, yes — you must start taking required minimum distributions at age 73. If you do not need the money, this forces you to take taxable withdrawals, which can affect your tax bracket and other benefits.

Which account grows faster?

Both grow at the same rate if you invest in the same funds. The difference is tax treatment, not growth. A Roth's advantage is that the growth itself is never taxed; a traditional IRA's advantage is the immediate tax deduction. Over decades, the tax-free growth in a Roth often wins if you are in a higher tax bracket in retirement than you are now.