Option A
Roth IRA
The tax-free growth account for future-focused savers.
Best for: Best for those who expect to be in a higher tax bracket in retirement or who want tax-free withdrawals later in life.
Option B
Traditional IRA
The upfront tax-deduction account for today's savings.
Best for: Best for those who want to reduce their taxable income now and expect a lower tax rate when they retire.
How Each Account Works
Both the Roth IRA and the Traditional IRA are individual retirement accounts created under U.S. tax law to encourage long-term retirement saving. Despite sharing a contribution limit and many structural similarities, their tax treatment is fundamentally different — and that difference shapes which account makes more sense depending on your circumstances.
A Traditional IRA allows you to contribute pre-tax or after-tax dollars (depending on whether your contribution is deductible), and your investments grow tax-deferred. You don't pay taxes on gains while the money is in the account, but withdrawals in retirement are taxed as ordinary income. Deductibility phases out at higher income levels if you or your spouse also have access to a workplace retirement plan.
A Roth IRA works in the opposite direction: contributions are always made with after-tax dollars, so there's no upfront deduction. In exchange, qualified withdrawals — including all investment growth — are completely tax-free in retirement, provided you meet the age and holding-period requirements set by the IRS. For a broader look at how these accounts fit into the overall retirement and investment landscape, see Investment Account Types Every American Should Know.
| Criterion | Roth IRA | Traditional IRA |
|---|---|---|
| Tax treatment of contributions | After-tax dollars (no deduction) | May be tax-deductible |
| Tax treatment of withdrawals | Qualified withdrawals tax-free | Taxed as ordinary income |
| 2024 contribution limit | $7,000 ($8,000 if 50+) | $7,000 ($8,000 if 50+) |
| Income eligibility limits | Phase-out applies at higher incomes | No income limit to contribute |
| Required minimum distributions | None during owner's lifetime | Required starting at age 73 |
| Early withdrawal of contributions | Contributions withdrawable anytime penalty-free | Subject to taxes and 10% penalty |
| Best tax scenario | Tax rate higher in retirement | Tax rate lower in retirement |
Key Rules: Contributions, Limits, and Income Thresholds
The IRS sets a single annual contribution limit that applies across all your IRAs combined — not per account. For 2024, that limit is $7,000 per year, or $8,000 if you're age 50 or older (a provision called the catch-up contribution). You cannot contribute more than your earned income for the year, whichever is lower.
Where the two accounts diverge is on income eligibility. Roth IRA eligibility phases out at higher modified adjusted gross incomes (MAGI). For 2024, the phase-out range begins at $146,000 for single filers and $230,000 for married couples filing jointly. Once your income exceeds the upper threshold, you cannot contribute directly to a Roth IRA.
Traditional IRA contributions, by contrast, are open to anyone with earned income regardless of how much they earn. However, the tax deductibility of those contributions phases out at certain income levels if you or your spouse participates in an employer-sponsored retirement plan such as a 401(k).
$7,000
2024 IRA annual contribution limit
The IRS sets a combined contribution limit across all IRAs; those 50 and older may contribute up to $8,000 via catch-up contributions.
Age 73
Age Traditional IRA RMDs begin
Under the SECURE 2.0 Act, Traditional IRA holders must begin required minimum distributions at age 73, up from the previous age of 72.
$146,000
2024 Roth IRA phase-out start (single filers)
Single filers with modified adjusted gross income above this threshold begin to lose Roth IRA eligibility, per IRS guidelines for 2024.
If you're just beginning to navigate retirement accounts, Investing for the First Time: A Practical Starting Point offers accessible context on the first steps.
Withdrawals, RMDs, and Long-Term Flexibility
One of the most consequential differences between these two account types involves how — and when — you must take money out.
Traditional IRAs require you to begin taking RMDs — required minimum distributions — starting at age 73 (under current law). The IRS calculates a minimum amount you must withdraw each year based on your account balance and life expectancy. Failing to take an RMD results in a significant tax penalty. These mandatory withdrawals can push retirees into higher tax brackets unexpectedly.
Roth IRAs have no RMDs during the account owner's lifetime. This gives Roth holders far greater flexibility: you can leave the account untouched for decades, allowing it to continue growing tax-free. This makes Roth IRAs an appealing tool for those who may not need to tap retirement savings immediately and for those thinking about passing assets to heirs.
Early withdrawals — before age 59½ — from either account type may trigger a 10% penalty plus applicable taxes, though both accounts offer exceptions for specific hardship scenarios defined by the IRS. Roth IRA contributions (not earnings) can be withdrawn at any time without penalty, since those dollars were already taxed.
The Backdoor Roth: A Common Workaround
High earners who exceed the Roth IRA income limits sometimes use a strategy called a 'backdoor Roth IRA,' which involves making a non-deductible Traditional IRA contribution and then converting it to a Roth. While this approach is widely used and recognized by the IRS, it involves specific tax rules — including the 'pro-rata rule' — that can complicate the conversion. Anyone considering this strategy should work with a qualified tax professional before proceeding.
For context on how similar trade-off decisions work in other financial products, the comparison in Savings Account Types Side by Side is a useful parallel read.
Choosing Between Them: A Tax-Timing Decision
At its core, choosing between a Roth IRA and a Traditional IRA is a question of when you'd rather pay taxes: now or later. Neither account is universally superior — the right choice depends on your current tax bracket, your projected retirement income, and how long your money has to grow.
If you expect your tax rate to be higher in retirement than it is today, paying taxes now (Roth) may save you money in the long run. If you expect your tax rate to be lower in retirement, deferring taxes (Traditional) generally makes more sense. When the tax outlook is genuinely uncertain — which it often is — some financial planners suggest contributing to both over time to diversify your tax exposure.
It's also worth considering that the same investment options — stocks, bonds, index funds, and more — are available inside both account types. The account structure affects tax treatment, not investment choice. For a deeper look at what to invest in once your account is open, Index Funds vs. Actively Managed Funds walks through a foundational portfolio decision.
This article provides general financial education and is not personalized investment, tax, or legal advice. Tax laws and IRS limits are subject to change. Consult a qualified financial adviser or tax professional for guidance specific to your situation.
The content on this site is for informational purposes only and is not a substitute for professional advice. Always consult a qualified professional for guidance specific to your situation.