The Difference Between a Roth and Traditional IRA - Explained Simply

Both accounts help you save for retirement. The difference comes down to when you pay taxes - and that decision matters more than most people realize.

The Core Difference - Taxes Now vs Taxes Later

A traditional IRA lets you contribute pre-tax dollars, reducing your taxable income in the year you contribute. Your money grows tax-deferred, and you pay ordinary income tax when you withdraw it in retirement. A Roth IRA works the opposite way - you contribute after-tax dollars, your money grows tax-free, and qualified withdrawals in retirement are completely tax-free.

The 2025 contribution limit is $7,000 per year for both account types combined if you are under 50, and $8,000 if you are 50 or older. You can split contributions between the two accounts, but the combined total cannot exceed the annual limit. The decision of which to use - or how to split between them - comes down to one central question: do you expect to be in a higher or lower tax bracket in retirement than you are today?

When the Roth IRA Wins

If you are early in your career, your income is lower now than it will likely be at peak earning years. That means your current marginal tax rate is probably lower than it will be in the future. Paying taxes now at a lower rate and letting the money grow tax-free for 30 or 40 years is a significant advantage. The Roth IRA is generally the better choice for most people in their 20s and early 30s, particularly those in the 22 percent federal bracket or below.

The Roth also has flexibility advantages. You can withdraw your contributions (not earnings) at any time without penalty. There are no required minimum distributions during your lifetime, which gives you more control over your income in retirement. And if tax rates rise in the future - which is a real possibility given current federal debt levels - having tax-free income in retirement is a hedge against that risk.

Roth IRA income limits apply. In 2025, the ability to contribute directly to a Roth IRA phases out for single filers earning between $150,000 and $165,000, and for married filers earning between $236,000 and $246,000. Above those thresholds, a backdoor Roth conversion may be your path in.

When the Traditional IRA Makes Sense

If you are in a high-income year and expect to be in a lower bracket in retirement, deferring taxes makes sense. A physician or business owner at the top of their earning years paying 37 percent in federal taxes today may prefer to take the deduction now and pay taxes later at what they expect will be a lower rate. The traditional IRA also makes sense if you need to reduce your taxable income this year for a specific financial reason.

Note that the traditional IRA deductibility phases out if you or your spouse are covered by a workplace retirement plan and your income exceeds certain thresholds. In 2025, the deduction phases out for single filers covered by a workplace plan between $79,000 and $89,000 of modified AGI. Check current IRS thresholds for married filing jointly, as they differ.

The Bottom Line on Choosing

For most early-career earners, the Roth IRA is the right call. For high earners already maximizing a workplace plan, the traditional IRA may offer a deduction worth taking, or the backdoor Roth may be the best available path. When in doubt, the Roth offers more flexibility and the benefit of tax-free growth compounds meaningfully over decades.

Either account beats no account. If you are spending time trying to pick the perfect option instead of just opening one and contributing, you are optimizing the wrong variable. Start contributing, and adjust your strategy as your income and tax situation evolves.