Roth vs. Traditional IRA: Which One Should You Choose?

Both a Roth IRA and a Traditional IRA are retirement accounts built for the same core purpose, tax-advantaged growth for your future. The difference comes down to one central question: would you rather pay taxes now, while you know your current rate, or later, when your future rate is a guess?

How Traditional IRAs Work

Contributions may reduce your taxable income in the year you make them, meaning you get a tax break right now. The money then grows tax-deferred, and you pay ordinary income tax when you withdraw it in retirement. This tends to favor people who expect to be in a lower tax bracket in retirement than they are today, a common scenario for high earners during their peak working years.

How Roth IRAs Work

Contributions are made with money you've already paid income tax on, so there's no upfront tax break. In exchange, qualified withdrawals in retirement, including every dollar of growth along the way, are completely tax-free. This tends to favor people who expect to be in the same or a higher tax bracket in retirement, or who simply place a high value on tax-free income later in life.

A Worked Example

Say you contribute $6,000 a year for 30 years, and your investments grow to $600,000 by retirement. With a Traditional IRA, that entire $600,000 is taxable as you withdraw it, at whatever your tax rate is at that time. With a Roth IRA, you would have paid tax on the $180,000 total you contributed over those 30 years, back when you earned it, but the remaining $420,000 in growth comes out completely tax-free. Which account wins depends entirely on whether your tax rate today is higher or lower than your tax rate will be decades from now, which nobody can know with certainty, but is worth thinking through based on your current trajectory.

Other Key Differences

Income limits: Roth IRA contributions phase out at higher income levels, meaning very high earners may not be able to contribute directly. Traditional IRA contributions have no income limit, though the tax deduction may phase out if you're also covered by a workplace retirement plan.
Required withdrawals: Traditional IRAs generally require you to start withdrawing at a certain age, whether you need the money or not. Roth IRAs have no required withdrawals during the original owner's lifetime, offering more control over your own timeline.
Early withdrawal flexibility: Roth IRA contributions, though generally not the earnings, can typically be withdrawn at any time without penalty, since you already paid tax on them. This offers more flexibility than a Traditional IRA in a genuine emergency.

See the Long-Term Difference

Model how each account type could grow differently based on your expected tax bracket now versus retirement.

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Frequently Asked Questions

Can I have both a Roth and a Traditional IRA?

Yes, you can contribute to both in the same year, as long as your total combined contributions across both accounts don't exceed the annual IRA limit set by the IRS.

Which one is better for young investors?

Many young investors favor Roth IRAs, since they're often in a lower tax bracket early in their career and stand to benefit most from decades of completely tax-free growth. This isn't universal advice though, it depends on your specific income trajectory.

Can I convert a Traditional IRA to a Roth IRA?

Yes, this is called a Roth conversion. You'll owe income tax on the converted amount in the year of conversion, but the funds then grow completely tax-free from that point forward.

What if I guess wrong about my future tax bracket?

Many people hedge by holding both account types, giving themselves flexibility to draw from whichever makes more sense tax-wise once they actually reach retirement and know their real income situation.