What Is an IRA, and Why Does It Matter?
An IRA is a tax-advantaged account designed to help Americans save for retirement outside of an employer-sponsored plan. While a 401(k) is tied to your job, an IRA is yours to open independently — typically through a bank, brokerage, or credit union.
Both the Roth and Traditional IRA allow your investments to grow without being taxed year over year, a concept called tax-deferred or tax-free growth. The critical difference is when the IRS takes its share. If you're new to the idea of growing money over time, our guide to saving vs. investing explains the foundational concepts behind both approaches.
For 2024, the IRS allows a combined contribution of up to $7,000 per year across all IRAs ($8,000 if you are 50 or older). You cannot contribute more than your earned income for the year.
How Each Account Handles Taxes
This is the core distinction — and getting it right can mean thousands of dollars over a lifetime.
Roth IRA: You contribute money you've already paid income tax on. In exchange, your account grows tax-free and qualified withdrawals in retirement (generally after age 59½, with the account open at least five years) are completely tax-free — including all the growth.
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 money grows tax-deferred, but every dollar you withdraw in retirement is taxed as ordinary income at whatever rate applies then.
| Criterion | Roth IRA | Traditional IRA |
|---|---|---|
| Tax treatment of contributions | After-tax (no deduction) | May be tax-deductible |
| Tax treatment of withdrawals | Tax-free (if qualified) | Taxed as ordinary income |
| Annual contribution limit (2024) | $7,000 / $8,000 if 50+ | $7,000 / $8,000 if 50+ |
| Income limit to contribute | Yes — phases out at higher incomes | No income cap to contribute |
| Required Minimum Distributions | None during owner's lifetime | Required starting at age 73 |
| Early withdrawal of contributions | Contributions (not earnings) can be withdrawn anytime penalty-free | 10% penalty before age 59½ (with exceptions) |
| Best tax scenario | Lower tax rate now than in retirement | Higher tax rate now than in retirement |
One additional distinction worth noting: Traditional IRAs require you to begin taking Required Minimum Distributions (RMDs) starting at age 73 (under current law). Roth IRAs impose no such requirement during your lifetime, giving you more control over when and how much you withdraw.
Which Account Fits Your Situation?
The honest answer is: it depends on your tax situation now compared to what you expect in retirement. Neither account is universally superior.
A few practical frameworks:
- Lower income today, higher expected income later? A Roth IRA lets you lock in a lower tax rate now.
- High income today, lower expected income in retirement? A Traditional IRA's deduction reduces your bill when it matters most.
- Uncertain about future tax rates? Many financial professionals suggest holding both account types over time — a strategy called tax diversification — to give yourself flexibility in retirement.
Income also matters for Roth eligibility. For 2024, the ability to contribute to a Roth IRA phases out for single filers with a modified adjusted gross income above $146,000 and is eliminated above $161,000. Married couples filing jointly face a phase-out range of $230,000 to $240,000. Traditional IRAs have no income cap for contributions, though deductibility may be limited.
Before opening either account, it's worth working through whether you're financially ready. Our investment readiness checklist can help you assess your footing first.
Both Accounts Can Hold the Same Investments
A common misconception is that an IRA is itself an investment. It's actually a tax-advantaged wrapper — you still choose what goes inside it, such as index funds, mutual funds, or bonds. The account type (Roth or Traditional) determines your tax treatment; your investment choices inside the account determine your growth potential. For a plain-language introduction to how investment accounts work, see our beginner's guide to investing.
This article is for general informational and educational purposes only and does not constitute personalized financial, tax, or investment advice. IRS rules change periodically; verify current limits and eligibility thresholds at IRS.gov or consult a licensed financial adviser or tax professional for guidance specific to your situation.
