Roth and Traditional Are Mirror Images
A traditional IRA deducts the contribution now and taxes the withdrawal. A Roth taxes the contribution now and exempts the withdrawal. If the tax rate is the same at both ends, the two produce exactly the same amount — multiplication is commutative, and the order of the tax and the growth does not matter.
Everything that makes one better than the other therefore comes from something other than the growth: which tax bracket applies, what the contribution limit lets you shelter, and what happens after you die.
When Each One Wins
- Roth wins when your tax rate will be higher in retirement — early-career earners, anyone expecting a large pension or substantial RMDs, and anyone who believes rates will rise.
- Traditional wins when your rate will be lower — peak earners in the 32–37% brackets who will retire into the 22–24% range.
- Roth wins on a technicality when you can max out either. The $7,000 limit shelters more real money in a Roth, because those dollars are already taxed. $7,000 in a Roth is worth more than $7,000 in a traditional IRA.
Contribution Limits and Income Phase-Outs
| Item | 2025 |
|---|---|
| Annual contribution limit | $7,000 |
| Catch-up, age 50+ | $1,000 |
| Roth phase-out, single | $150,000–$165,000 |
| Roth phase-out, married filing jointly | $236,000–$246,000 |
Above the phase-out you cannot contribute directly. The backdoor Roth — a non-deductible traditional contribution converted immediately — remains legal, but the pro-rata rule makes it messy if you hold other pre-tax IRA money.
The Advantages That Have Nothing to Do With Tax Brackets
- Contributions can be withdrawn at any time, tax-free and penalty-free, because they were already taxed. Earnings cannot, before 59½ and five years.
- No required minimum distributions. A traditional IRA forces withdrawals from 73; a Roth never does, so it can be left to compound untouched.
- Better for heirs. Inherited Roth money comes out tax-free within the ten-year window; inherited traditional money is taxed at the heir's rate, often during their peak earning years.
The Five-Year Rules
There are two, and they are frequently confused. Earnings are tax-free only if the account has existed for five years and you are 59½. Separately, each Roth conversion has its own five-year clock before the converted amount can be withdrawn penalty-free. Opening a Roth with a small amount early, purely to start the clock, is a cheap and sensible move.
Frequently Asked Questions
Can I have both a Roth IRA and a 401(k)?
Yes. The limits are separate. Income limits apply to Roth IRA contributions but never to 401(k) deferrals.
Is a Roth worth it if I am close to retirement?
Often yes, because of the absence of RMDs and the estate benefit, but the five-year rule matters more the later you start.
What if my tax rate turns out to be different than I assumed?
That is the argument for holding both. Splitting contributions between Roth and traditional gives you two pools taxed differently, and the flexibility to draw from whichever is cheaper in any given year.