Key Takeaways
- Roth IRA contributions are made with after-tax money; qualified withdrawals in retirement are tax-free.
- Traditional IRA contributions may be tax-deductible now; withdrawals in retirement are taxed as ordinary income.
- Your current versus expected future tax rate is the central factor in choosing between the two.
- Both account types share the same annual contribution limit, set by the IRS each year.
- Roth IRAs have no required minimum distributions; Traditional IRAs require withdrawals starting at age 73.
- Income limits apply to Roth IRA eligibility and to deductibility of Traditional IRA contributions.
Option A
Roth IRA
The tax-free growth account funded with after-tax dollars.
Best for: Savers who expect to be in a higher tax bracket in retirement than they are today.
Option B
Traditional IRA
The upfront tax-deduction account that defers taxes until withdrawal.
Best for: Savers who want to reduce their taxable income now and expect a lower tax rate in retirement.
If you are early in your career with a relatively low income
Roth IRA
Your tax rate is likely lower now than it will be at peak earning years, making tax-free growth especially valuable over a long time horizon.
If you are in your peak earning years and want to lower your tax bill today
Traditional IRA
A deductible contribution reduces your taxable income in a high-bracket year, and you may pay less tax on withdrawals if income drops in retirement.
If you want flexibility and no forced withdrawals in retirement
Roth IRA
Roth IRAs have no required minimum distributions, giving you control over when and how much you withdraw.
If your income exceeds Roth IRA eligibility thresholds
Traditional IRA
High earners may be phased out of Roth contributions entirely, making the Traditional IRA the straightforward direct option.
How Each Account Is Taxed — The Core Difference
Understanding the tax treatment of each account is the foundation for making a good choice. Before reviewing side-by-side details, consider reading our primer on saving versus investing to frame where IRAs fit in your broader financial picture.
With a Roth IRA, you contribute money you've already paid income tax on. Because taxes are settled upfront, your investments grow tax-free, and qualified withdrawals in retirement — generally after age 59½ and after holding the account for at least five years — are completely tax-free, including all earnings.
With a Traditional IRA, contributions may be tax-deductible in the year you make them, depending on your income and whether you have access to a workplace retirement plan. Your investments grow tax-deferred, meaning you owe no tax on gains each year. However, every dollar you withdraw in retirement is taxed as ordinary income at whatever rate applies then.
The question both accounts are really asking is: When would you rather pay taxes — now, or later?
| Criterion | Roth IRA | Traditional IRA |
|---|---|---|
| Tax on contributions | After-tax (no deduction) | May be tax-deductible |
| Tax on withdrawals | Tax-free (if qualified) | Taxed as ordinary income |
| Investment growth | Tax-free | Tax-deferred |
| Income limits to contribute | Yes — phase-out applies | No limit to contribute; deduction phases out |
| Required Minimum Distributions | None for original owner | Required starting at age 73 |
| Early withdrawal of contributions | Contributions withdrawable anytime penalty-free | Subject to tax and 10% penalty before 59½ |
| Best tax scenario | Higher tax rate expected in retirement | Lower tax rate expected in retirement |
Rules, Limits, and Eligibility
Both account types share an annual contribution limit established by the IRS, which is periodically adjusted for inflation. Savers aged 50 and older can make additional catch-up contributions each year. Importantly, the limit is a combined ceiling — you cannot contribute the maximum to both a Roth and a Traditional IRA in the same year.
Contribution Limits Apply Across Both IRAs
The IRS annual contribution limit covers your total IRA contributions — Roth and Traditional combined. For example, if the limit is $7,000 and you put $3,000 into a Roth IRA, you can contribute at most $4,000 to a Traditional IRA that same year. Check IRS.gov each year for current figures, as limits are adjusted periodically for inflation.
Roth IRA income limits: Your ability to contribute directly to a Roth IRA phases out at higher income levels. The IRS publishes updated thresholds each year based on modified adjusted gross income (MAGI) and filing status. Above the phase-out range, direct Roth contributions are not permitted.
Traditional IRA deductibility limits: Anyone with earned income can contribute to a Traditional IRA, but the deduction phases out if you (or your spouse) are covered by a workplace retirement plan and your income exceeds IRS thresholds. Nondeductible Traditional IRA contributions are still allowed, though the tax benefit diminishes without the deduction.
Required Minimum Distributions (RMDs): Traditional IRA owners must begin taking RMDs at age 73 under current IRS rules. Roth IRAs have no lifetime RMD requirement for the original owner, making them a useful tool for those who do not need immediate income in retirement and may want to preserve assets longer.
Choosing Based on Your Tax Situation
The most useful framework is comparing your current marginal tax rate to your expected tax rate in retirement. Because tax rates and personal income can be hard to predict, many financial educators suggest considering a split approach — contributing to both types of accounts over time to create tax diversification in retirement.
Age 73
Traditional IRA RMD start age
Under the SECURE 2.0 Act signed into law in 2022, required minimum distributions from Traditional IRAs must begin at age 73, up from the prior age of 72.
5 years
Roth IRA seasoning rule
The IRS requires that a Roth IRA be open for at least five years before earnings can be withdrawn tax-free, even after age 59½ — a key timing consideration for late starters.
If you expect your income — and therefore your tax bracket — to be higher in retirement than it is today, paying tax now via a Roth contribution is generally advantageous. If you expect your income to drop significantly after leaving work, deferring taxes with a Traditional IRA may serve you better.
Your risk tolerance and investment horizon also play a supporting role: longer time horizons often amplify the compounding benefit of tax-free Roth growth, while those closer to retirement may value the immediate deduction more.
Before opening either account, it's worth working through the key questions to answer before opening an investment account to make sure you're prepared.
This article is for general informational and educational purposes only. It is not personalized financial, tax, or legal advice. Tax laws and IRS rules change periodically. Consult a licensed financial adviser or tax professional before making decisions about your own retirement accounts.