Roth IRA vs Traditional IRA: Which Is Better for You?
- A traditional IRA is taxed later: contributions may be deductible now, withdrawals are taxed as income in retirement.
- A Roth IRA is taxed now: no deduction, but qualified withdrawals โ contributions and all growth โ are tax-free.
- If your tax rate is the same now and in retirement, the two leave you with exactly the same money. The choice is a bet on which rate will be higher.
- Roth wins when you expect higher taxes later (early career, low bracket now); traditional wins when you're in a high bracket now and expect a lower one later. Many people hold both.
Few personal-finance questions generate as much debate as Roth versus traditional. The good news is that, stripped of jargon, it reduces to a single question โ and once you see the math, the answer for your situation is usually clear.
How each account works
Traditional IRA. You contribute pre-tax dollars (the contribution is deductible if you qualify), the money grows without annual tax, and every dollar you withdraw in retirement is taxed as ordinary income. Required minimum distributions (RMDs) force you to start withdrawing in your 70s.
Roth IRA. You contribute after-tax dollars (no deduction), the money grows without annual tax, and qualified withdrawals in retirement โ your contributions and all the growth โ are completely tax-free. There are no RMDs during your lifetime, and you can withdraw your contributions (not earnings) at any time without tax or penalty.
Both have the same annual contribution limit (shared between them), both let you invest in the same things, and both shelter growth from yearly taxation. The only structural difference is when you pay tax: on the way in (Roth) or on the way out (traditional).
The math: it's a bet on tax rates
Suppose you have $6,000 of pre-tax income to save, you're in a 22% bracket today, and you'll be in a 22% bracket in retirement. Your investments triple over the years.
| Traditional | Roth | |
|---|---|---|
| Pre-tax income available | $6,000 | $6,000 |
| Tax paid now (22%) | $0 | $1,320 |
| Amount invested | $6,000 | $4,680 |
| Grows 3ร to | $18,000 | $14,040 |
| Tax at withdrawal (22%) | $3,960 | $0 |
| Spendable in retirement | $14,040 | $14,040 |
Identical. This is the key insight: with equal tax rates, Roth and traditional are mathematically the same โ multiplication is commutative, so it doesn't matter whether you take the 22% off before or after the growth. The difference only appears when the rates differ:
- If your retirement rate is lower than today's (say 22% now, 12% later), traditional wins โ you deduct at 22% and pay at 12%.
- If your retirement rate is higher (12% now, 22% later), Roth wins โ you pay at 12% and withdraw at 0%.
Our Roth IRA calculator and traditional IRA calculator project the balance for your contributions and return; compare the Roth figure (fully spendable) against the traditional figure after your expected retirement tax rate.
Who should lean Roth
- Early-career and lower-bracket savers. If you're in the 10โ12% bracket now, paying that tax today to lock in tax-free growth for 30โ40 years is hard to beat.
- Anyone who expects higher taxes later โ from career growth, a pension, large traditional balances (whose RMDs are taxable), or simply a belief that rates will rise.
- People who value flexibility. Contributions can be withdrawn anytime; no RMDs means the account can keep compounding and pass to heirs tax-free.
- Tax diversifiers. Having both taxable and tax-free buckets in retirement lets you control your taxable income year by year.
Who should lean traditional
- High earners in their peak years (24% bracket and up) who expect a lower bracket in retirement โ the deduction today is worth a lot.
- People who will actually invest the tax savings. The traditional advantage only materializes if the $1,320 you didn't pay in tax gets invested, not spent. (Roth is "forced discipline" in that sense.)
- Those above the Roth income limits โ though a "backdoor Roth" (non-deductible traditional contribution converted to Roth) is a common workaround.
Don't forget the 401(k)
The same logic applies to traditional vs Roth 401(k) contributions, and most people should fund the 401(k) at least up to the employer match before an IRA โ the match is an instant 50โ100% return no IRA can offer. See our 401(k) calculator. And if you end up with a large traditional balance, the RMD calculator shows the withdrawals you'll eventually be required to take.
A simple decision rule
- Get the full 401(k) match first.
- If you're in the 12% bracket or below: Roth.
- If you're in the 24% bracket or above and expect to retire into a lower one: traditional, and invest the tax savings.
- In between, or unsure: split โ tax diversification is a hedge against a future you can't predict.
The contribution limit favours Roth in a way that is easy to miss
The annual IRA limit is the same dollar figure for both account types, but those dollars are not equivalent. A $7,000 traditional contribution is $7,000 of pre-tax money; a $7,000 Roth contribution is $7,000 of after-tax money, which in a 24% bracket required about $9,200 of gross income to produce.
In effect, maxing a Roth shelters more real purchasing power than maxing a traditional account, because the tax has already been paid on it and will never be paid again. For a saver who can comfortably max out either one, that makes the Roth the larger contribution in everything but name. The traditional account only pulls ahead if you actually invest the tax you saved โ and in a taxable account, where its growth is then taxed.
| Traditional | Roth | |
|---|---|---|
| Contribution | $7,000 | $7,000 |
| Gross income required (24% bracket) | $7,000 | โ $9,200 |
| Tax owed on withdrawal | Yes, at your future rate | None |
| Required minimum distributions | Yes, from your 70s | None in your lifetime |
Common questions
Can I have both a Roth IRA and a traditional IRA?
Yes. You can hold both and contribute to both in the same year โ but the annual contribution limit is a single combined cap across all your IRAs, not one limit per account. Many savers split contributions to build both a taxable and a tax-free bucket for retirement.
What are the income limits for a Roth IRA?
Direct Roth contributions phase out above certain modified adjusted gross income thresholds, which the IRS adjusts most years (and which differ for single and married filers). Above the limit, you can't contribute directly โ but a "backdoor Roth," in which you make a non-deductible traditional contribution and convert it to Roth, is a widely used and legal workaround. Check the current-year thresholds before contributing.
What is a Roth conversion and when does it make sense?
A conversion moves money from a traditional IRA into a Roth; you pay income tax on the converted amount now in exchange for tax-free growth and withdrawals later. It tends to make sense in a low-income year โ early retirement before Social Security, a sabbatical, a job gap โ when the conversion is taxed at a low bracket, or when you want to shrink future required minimum distributions.
Which is better if I'm not sure what taxes will be in the future?
Split. Holding both account types is a hedge: in retirement you can draw from the traditional account up to the top of a low bracket and take the rest tax-free from the Roth, managing your taxable income year by year. Uncertainty is a reason to diversify, not to pick one and hope.
Do Roth IRAs have required minimum distributions?
Not for the original owner during their lifetime โ a major advantage over traditional IRAs, which require withdrawals starting in your 70s whether you need the money or not. Inherited Roth IRAs do have distribution requirements for most beneficiaries, but the withdrawals remain tax-free.
Project both accounts. See what your contributions could grow to, tax-free or tax-deferred.
Open the Roth IRA Calculator โ