An Individual Retirement Account (IRA) is one of the most powerful tools for building retirement savings in the United States. But when you open one, you face an important choice: a Roth IRA or a Traditional IRA?
The main difference comes down to one question: do you want to pay taxes now or later? This guide explains how each account works, the key rules, and how to decide which is better for you.
The Core Difference: When You Pay Tax
- Traditional IRA: Contributions may be tax-deductible now. Your money grows tax-deferred, and you pay income tax when you withdraw it in retirement.
- Roth IRA: Contributions are made with money you’ve already paid tax on. Your money grows tax-free, and qualified withdrawals in retirement are also tax-free.
In simple terms: a Traditional IRA gives you a tax break today, while a Roth IRA gives you a tax break in retirement.
How a Traditional IRA Works
Tax deduction
Your contributions may reduce your taxable income for the year. Whether you can deduct the full amount depends on your income and whether you (or your spouse) are covered by a workplace retirement plan like a 401(k). If you’re not covered by a workplace plan, your contributions are generally fully deductible.
Tax-deferred growth
Your investments grow without being taxed each year.
Withdrawals
Withdrawals in retirement are taxed as ordinary income. Withdrawals before age 59½ are generally subject to income tax plus a 10% early withdrawal penalty, unless an exception applies.
Required minimum distributions (RMDs)
You must begin taking required minimum distributions starting at a set age (currently 73 for most people, under the SECURE 2.0 Act, rising to 75 for people born in 1960 or later). This forces you to withdraw — and pay tax on — part of your balance each year.
How a Roth IRA Works
No upfront deduction
You contribute money you’ve already paid tax on, so there’s no deduction today.
Tax-free growth and withdrawals
Qualified withdrawals — generally after age 59½ and once the account has been open for at least five years — are completely tax-free, including all investment growth.
Flexible access to contributions
You can withdraw the money you contributed (not the earnings) at any time, for any reason, without tax or penalty. This makes a Roth IRA more flexible than a Traditional IRA, although it’s best to leave the money invested for retirement.
No RMDs for the original owner
Roth IRAs don’t require withdrawals during the original owner’s lifetime, which gives you more control over your retirement income and can help with estate planning.
Income limits
You can contribute directly to a Roth IRA only if your income is below certain limits, which depend on your tax filing status. High earners may be phased out or unable to contribute directly.
Roth IRA vs Traditional IRA: Side-by-Side
| Feature | Traditional IRA | Roth IRA |
|---|---|---|
| Tax break | Now (possible deduction) | Later (tax-free withdrawals) |
| Growth | Tax-deferred | Tax-free |
| Retirement withdrawals | Taxed as income | Tax-free if qualified |
| Income limits to contribute | None (but deduction limits apply) | Yes |
| Early access to contributions | Penalties usually apply | Contributions available anytime |
| Required minimum distributions | Yes | No (for the original owner) |
Contribution Limits
The IRS sets an annual contribution limit that applies to the combined total of your Traditional and Roth IRA contributions — you can split money between them, but you can’t exceed the total. People aged 50 and over can make additional catch-up contributions. Limits are adjusted periodically, so check the current year’s figures on the IRS website.
You also need earned income to contribute. A spouse without earned income may be able to contribute through a spousal IRA if you file jointly.
Which One Is Better for You?
A Roth IRA may be better if:
- You’re early in your career and expect your income — and tax rate — to be higher later.
- You’re in a low tax bracket now. Paying tax at a low rate today can be a great deal.
- You want flexibility to access your contributions if needed.
- You want to avoid RMDs or leave tax-free money to heirs.
- You expect tax rates to rise in the future.
A Traditional IRA may be better if:
- You’re in a high tax bracket now and expect a lower rate in retirement.
- You need the deduction to lower your current tax bill.
- Your income is too high to contribute directly to a Roth IRA.
- You’re close to retirement and expect your income to drop.
Can’t decide? Consider both
Many people split contributions between Roth and Traditional accounts to create tax diversification. Having both taxable and tax-free money in retirement gives you more control over your tax bill each year.
What If Your Income Is Too High for a Roth?
High earners sometimes use a strategy called a backdoor Roth IRA: they make a nondeductible contribution to a Traditional IRA and then convert it to a Roth IRA. This can have tax consequences if you hold other pre-tax IRA money, so it’s worth getting professional tax advice before trying it.
Roth Conversions
You can convert money from a Traditional IRA to a Roth IRA at any time. You’ll pay income tax on the converted amount in the year you convert. Some people convert during low-income years — for example, early retirement or a career break — to pay tax at a lower rate.
How IRAs Fit With Your 401(k)
If your employer offers a 401(k) with a matching contribution, a common order of priorities is:
- Contribute enough to your 401(k) to get the full employer match.
- Contribute to an IRA (Roth or Traditional).
- Increase 401(k) contributions if you have more to save.
Our guide to strategies for growing your wealth explains more about building long-term savings.
What to Invest in Inside an IRA
An IRA is just the account — you still need to choose investments. Many people use low-cost, diversified options such as index funds, ETFs, or target-date funds. See our comparison of index funds vs ETFs to learn more.
Frequently Asked Questions
Can I have both a Roth and a Traditional IRA?
Yes. You can have both, but your total contributions across all IRAs can’t exceed the annual limit.
What is the five-year rule for Roth IRAs?
To withdraw earnings tax-free, your first Roth IRA contribution must have been made at least five tax years earlier, and you generally must be 59½ or older (or meet another exception).
Can I contribute to an IRA if I have a 401(k)?
Yes. Having a 401(k) doesn’t stop you from contributing to an IRA, although it may affect whether your Traditional IRA contributions are tax-deductible.
What’s the deadline to contribute?
You can usually make IRA contributions for a given tax year up until the tax filing deadline of the following year, typically in mid-April.
Final Thoughts
Both Roth and Traditional IRAs are excellent ways to save for retirement. The right choice depends mainly on whether you think your tax rate will be higher now or in retirement. Younger savers and those in lower tax brackets often benefit most from a Roth IRA, while higher earners seeking a deduction today may prefer a Traditional IRA. The most important step is simply to start contributing and investing consistently.
This article is for general educational purposes and is not tax or investment advice. IRA rules and limits change, so check IRS guidance or consult a tax professional.