Both a Roth IRA and a Traditional IRA are individual retirement accounts that offer significant tax advantages compared to a regular taxable brokerage account. The core difference comes down to when you pay taxes: now (Roth) or later (Traditional). Choosing correctly can save you tens of thousands of dollars over your retirement savings journey.
The Core Difference: When You Pay Taxes
Traditional IRA: You contribute pre-tax dollars (potentially reducing your taxable income this year), your investments grow tax-deferred, and you pay ordinary income taxes when you withdraw money in retirement.
Roth IRA: You contribute after-tax dollars (no deduction now), your investments grow completely tax-free, and qualified withdrawals in retirement are 100% tax-free — including all the decades of growth.
2026 Contribution Limits
For 2026, the IRS allows:
- Under age 50: $7,000 per year (combined across all IRAs)
- Age 50 and older: $8,000 per year (the extra $1,000 is a "catch-up" contribution)
This limit applies to the total across all your IRA accounts — you cannot contribute $7,000 to a Roth and $7,000 to a Traditional in the same year.
Which Should You Choose?
The central question is: will you be in a higher or lower tax bracket in retirement than you are today?
- Choose Roth if: You're early in your career and currently in a low tax bracket, you expect to be in a higher bracket later, you want tax diversification in retirement, or you want flexibility (Roth contributions — not earnings — can be withdrawn at any time without penalty)
- Choose Traditional if: You're in a high tax bracket now and expect to be in a lower one in retirement, you want to reduce your current year tax bill, or your income exceeds Roth eligibility limits
The Roth Advantage Is Especially Powerful When Young
If you're in your 20s or early 30s, the Roth IRA is almost always the better choice. Here's why: you're likely in the 12% or 22% federal tax bracket now. In retirement, after decades of compound growth in your account, your withdrawals from a Traditional IRA could push you into the 24% or higher bracket. Paying taxes at 22% now to avoid paying 24–32% on a much larger balance later is an excellent trade.
Can You Have Both?
Yes — you can contribute to both a Roth IRA and a Traditional IRA in the same year, as long as your total contributions don't exceed the annual limit. Many financial planners recommend "tax diversification" — having some money in both account types — so you can strategically choose which account to draw from in retirement based on your tax situation each year.
The Bottom Line
For most Americans under 50 who aren't in the top tax brackets, the Roth IRA offers a more powerful long-term outcome. Open one at Fidelity, Vanguard, or Charles Schwab today, contribute what you can, invest in a low-cost total market index fund, and don't touch it for decades. That's genuinely the complete retirement investing plan for most people.