The one real difference: when you pay tax
Both accounts share the same 2026 contribution limit of $7,500, or $8,600 at 50 and older, and both let your investments grow without yearly tax. The big difference is timing. A traditional IRA can give you a deduction now and taxes withdrawals later. A Roth IRA gives no deduction now, and qualified withdrawals come out tax-free.
So the question is simple to state: will your tax rate be higher today or in retirement? Pay the tax in whichever period it's lower.
A worked example with $1,000 of pay
Say you have $1,000 of pre-tax pay to save and a 22% tax rate today. In a traditional IRA you deduct it and invest the full $1,000. In a Roth IRA you pay $220 of tax first and invest $780. Both earn 7% a year for 30 years.
The traditional account grows to about $7,612. The Roth grows to about $5,938. But the traditional balance still owes tax. At the same 22% rate on the way out, you keep about $5,938, exactly what the Roth gives you. When your rate stays the same, the two accounts tie.
When each one tends to win
A Roth IRA tends to come out ahead when your income is low now and likely to rise, like early in a career. You lock in the lower rate you pay now on money that may grow for decades.
A traditional IRA tends to win when you're in your peak earning years and expect a lower rate once the paycheck stops. The deduction saves tax at your high rate, and you pay it back later at a lower one.
Most people can't be sure about their future rate. Splitting contributions between the two is a fair hedge, as long as the total stays inside the shared limit.
Income rules can make the choice for you
For 2026, direct Roth contributions phase out between $153,000 and $168,000 of modified AGI for single filers and between $242,000 and $252,000 for joint filers. Above the top, you can't contribute to a Roth IRA directly.
Traditional IRAs have no income limit for contributing, but the deduction does if you or your spouse has a workplace plan. A covered single filer loses it between $81,000 and $91,000. Above that range, a traditional contribution gets no deduction now and its earnings are still taxed later, which removes most of the tax advantage.
Withdrawals and RMDs
Traditional IRA withdrawals before 59 1/2 usually carry an extra 10% tax on top of income tax, unless an exception applies. From 73 you generally have to take required minimum distributions every year whether you need the money or not.
Roth IRAs have no required distributions while you're alive. Earnings come out tax-free once you're 59 1/2 and five tax years have passed since your first Roth contribution. That flexibility is worth something even when the tax math is a tie.
To see how a traditional balance builds and what it might be worth after tax, try our IRA calculator with your own deposits and tax rate.
Mistakes to avoid
- Comparing the traditional balance before tax with the Roth balance. Always compare after-tax values.
- Thinking each account has its own $7,500 limit. It's one limit across both.
- Contributing nondeductible money to a traditional IRA and not filing Form 8606, which can lead to paying tax twice.
- Choosing only on today's tax bill and ignoring RMDs and withdrawal flexibility.
Frequently asked questions
Is a Roth IRA better than a traditional IRA?
Neither is better for everyone. If your tax rate in retirement will be lower than today's, a traditional IRA usually leaves you more. If it'll be higher, a Roth usually does. Equal rates give the same result.
Can I contribute to both a Roth and a traditional IRA?
Yes, in the same year. The combined total can't go over $7,500 for 2026, or $8,600 if you're 50 or older.
Do Roth IRAs have required minimum distributions?
Not for the original owner. Traditional IRAs generally require them from 73, while Roth IRAs don't require withdrawals until after the owner dies.
What if my income is too high for a Roth IRA?
For 2026, single filers can't contribute directly at $168,000 or more of modified AGI, and joint filers can't at $252,000 or more. Some people make a nondeductible traditional contribution instead, which needs Form 8606.
Does a traditional IRA lower my taxes now?
It can. If you qualify for the deduction, your contribution reduces taxable income for the year. If you or your spouse has a workplace plan, the deduction phases out at higher incomes.
References
These sources support the method or guidance used for IRA Calculator. Verify time-sensitive rules at the source.
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