Roth IRA vs. Traditional IRA: Taxes, RMDs, and How to Choose

Correction: We corrected Traditional IRA basis, Roth conversion restrictions, eligibility qualifications and the equal-tax-rate example. See corrections and updates.

A Roth IRA and a Traditional IRA differ mainly in when you receive the income-tax benefit. Roth contributions are not deductible, but qualified withdrawals are tax-free. A Traditional contribution may be deductible; withdrawals are taxable except for the share representing after-tax basis. They share one regular IRA contribution limit: $7,500 for 2026, or $8,600 if you are 50 or older by year-end, subject to compensation and other eligibility rules.

The core difference: tax now or tax later

A deductible Traditional IRA contribution lowers taxable income now. Ordinary investment income inside the account is generally tax-deferred, and taxable distributions are ordinary income later. But not every Traditional contribution is deductible. A nondeductible contribution creates basis—money already taxed—which Form 8606 tracks so it is not taxed again.

A Roth IRA contribution does not produce an income-tax deduction. Ordinary investment income generally is not taxed annually inside the account, and a qualified distribution, including its earnings, is tax-free. The usual retirement route requires age 59½ and the Roth IRA five-tax-year period. Disability, death and qualifying first-home distributions provide other routes once the five-tax-year test is met.

The tax-rate comparison works only when you compare the same starting budget. Equal dollar deposits do not have the same cost if one produces a deduction and the other does not. The worked example below makes that difference visible.

Roth IRA vs. Traditional IRA at a glance

Contribution eligibility is separate from deductibility

For 2026, your combined regular Traditional and Roth IRA contributions cannot exceed the annual $7,500/$8,600 limit or your available qualifying compensation. A married couple filing jointly may use the spousal IRA rules when one spouse has little or no compensation; combined contributions still cannot exceed the couple's qualifying compensation, and each spouse has a separate IRA and individual limit.

Compensation usually includes wages and qualifying net self-employment income, with required adjustments. Investment income by itself is not compensation. Workplace-plan contributions such as SIMPLE salary reductions and SEP employer contributions have separate limits; saying the regular IRA cap covers every kind of IRA contribution would be misleading.

Roth IRA: income can limit the contribution

The 2026 direct-Roth contribution phase-out ranges are:

• Single or head of household: $153,000–$168,000 of Roth modified AGI.
• Married filing jointly or qualifying surviving spouse: $242,000–$252,000.
• Married filing separately and lived with a spouse at any time during the year: $0–$10,000.

If you file separately but lived apart from your spouse for the entire year, the single-filer range applies. Roth modified AGI is a specific tax calculation, not simply salary or account balance. See Roth IRA eligibility.

Traditional IRA: income can limit the deduction instead

A high income does not itself prevent an otherwise eligible regular Traditional IRA contribution. It can prevent the deduction when you or your spouse are covered by a workplace retirement plan.

If neither spouse is covered, income does not phase out the deduction for an otherwise allowable contribution. A separately filing person who lived apart from their spouse for the entire year is treated as single for this purpose. Filing status and coverage details matter; use Publication 590-A with the 2026 figures from Notice 2025-67.

Withdrawals: basis is not the same in the two accounts

Roth: for nonqualified distributions, regular contribution basis generally comes out first across your own Roth IRAs, followed by conversions and certain rollovers, oldest year first, then earnings. Within each conversion year, the taxable-at-conversion portion comes before the nontaxable portion. Recent taxable conversions can trigger the 10% additional tax before age 59½ if their separate five-tax-year period is unfinished and no exception applies. So restrictions are not limited to earnings.

Traditional: if you have nondeductible basis, you generally cannot select only those dollars for a tax-free withdrawal. Form 8606 applies a proportionate calculation using your Traditional, traditional SEP and traditional SIMPLE IRAs. The taxable share of an early distribution can face income tax and the 10% additional tax unless an exception applies.

At 59½, the usual early-distribution tax ends. That does not automatically make nonqualified Roth earnings tax-free; the separate qualified-distribution clock still matters. See withdrawal rules and the two five-year rules.

RMDs are a separate difference

A Roth IRA has no required minimum distributions during the original owner's lifetime under IRC §408A(c)(4). Traditional IRA owners must take RMDs once their applicable starting-age rules require them, even if they do not need the cash. Only the taxable portion increases taxable income; basis does not disappear because a withdrawal is an RMD.

Beneficiaries of either account type have separate distribution requirements. “No owner RMDs” does not mean heirs can necessarily leave the account untouched indefinitely.

Worked example: the same pre-tax budget

How to think about the choice

A higher tax rate on future withdrawals can favor Roth treatment; a lower future rate can favor a deductible Traditional contribution. At equal rates, the simplified tax math ties. Deduction eligibility, annual contribution ceilings, withdrawal flexibility, RMDs, other taxes and benefits, and uncertainty about future law can change the practical comparison.

There is no universal winner. You can explore explicit assumptions in the Roth vs. Traditional calculator; a calculator result is not a prediction of your future tax rate or a personalized recommendation.

Can you have both, or convert later?

Yes. An eligible saver under 50 in 2026 could split the shared regular limit into $4,000 Roth and $3,500 Traditional, provided the compensation and Roth income requirements are met. Having both can provide different sources for future withdrawals; qualified Roth distributions are tax-free, while the Traditional taxable share is ordinary income.

A Traditional-to-Roth conversion has no income eligibility ceiling and does not use the regular annual contribution limit. The pre-tax amount converted is generally taxable; after-tax basis must be allocated under the applicable rules. Required minimum distributions are not eligible for conversion. The backdoor Roth combines a regular nondeductible Traditional contribution with a conversion, so its contribution step still needs compensation and annual contribution room.

A completed Roth conversion cannot be undone by recharacterizing it as a Traditional IRA contribution. That is different from an eligible regular contribution, which may be recharacterized between IRA types within the applicable deadline and rules.

Corrections and updates

September 24, 2026 — Correction: Corrected blanket taxation of Traditional withdrawals, Roth conversion recapture, contribution and deduction qualifications, and the owner-RMD citation. Replaced the unequal-budget example with an explicit equal-pre-tax-budget calculation and qualified the conversion/recharacterization distinction. Removed an unsupported withdrawal-statistics summary and an overbroad RMD-age statement. Correction record.