Roth IRA vs Traditional IRA: 2026 Limits and Tax Examples

A Roth IRA uses money you cannot deduct today and offers tax-free qualified withdrawals. A traditional IRA may give you a deduction today, with taxable withdrawals later. Choosing between them starts with eligibility: a traditional contribution is not automatically deductible, and direct Roth contributions have income limits. If both options are available, compare the tax saved now with the tax attributable to future withdrawals, using the same out-of-pocket saving budget.

This guide covers ordinary US individual retirement accounts and 2026 federal limits, checked September 8. Workplace Roth choices have different rules; see traditional vs Roth 401(k). An IRA is an account, not a promised return: Investor.gov explains that you choose a provider and investments from its available options.

Roth vs traditional IRA at a glance

IRS Topic 451 explains deductible versus nondeductible contributions and taxable distributions. Do not compare a fully deductible traditional IRA with a Roth IRA if you cannot actually claim that deduction.

The shared 2026 contribution limit

The IRS contribution-limit page sets the combined regular traditional-plus-Roth IRA allowance at $7,500 for 2026, or $8,600 if you are 50 or older by year-end, subject to eligible compensation if lower. Opening more accounts does not multiply it. For example, an eligible under-50 saver contributing $3,000 to a traditional IRA has at most $4,500 left for a Roth IRA before its income restriction is applied.

Eligible joint filers may use the spousal IRA rules when one spouse lacks compensation, but each IRA remains individually owned and combined contributions must fit the couple’s qualifying compensation. There is no maximum contribution age. Rollovers are distinct from regular contributions; a conversion is not an extra annual contribution allowance. Contributions to a workplace plan have separate limits, explained in 401(k) vs IRA and using both.

Two different income tests

MAGI means modified adjusted gross income for the relevant IRA test; it is not necessarily salary or the same number for both tests. The IRS 2026 limits announcement gives these common phase-out ranges:

For the traditional deduction rows, full deduction eligibility extends through the lower endpoint; it is reduced above that endpoint and eliminated at the upper endpoint. Direct Roth contribution reductions start at the lower endpoint, with no direct contribution at or above the upper endpoint. Other contribution requirements still apply.

If neither you nor your spouse is covered by a workplace retirement plan, these traditional deduction phase-outs do not apply. Direct Roth income limits still do. For married filing separately, living with your spouse at any time during the year can bring a $0–$10,000 range into play. Living apart for the entire year changes the treatment. Use the filing-status rules and applicable worksheets in Publication 590-A, rather than using a joint-filer row for a separate return. Its “What’s New for 2026” section contains the new-year figures; most worked forms elsewhere concern 2025.

A hypothetical single saver covered at work with $100,000 of MAGI for each relevant test falls above the traditional deduction ceiling but below the direct Roth phase-out. Assuming enough compensation and unused contribution room, that saver can fund a Roth IRA directly, while a traditional IRA contribution would be nondeductible. A high tax bracket alone does not create an IRA deduction.

A 30-year comparison with the same saving budget

Assume a 35-year-old makes one contribution now, holds it until age 65 and earns an entirely hypothetical 5% annual compound return. There are no later deposits, fees, state taxes or inflation adjustments. The traditional contribution is fully deductible; the Roth contribution is eligible and its eventual withdrawal qualified. Assume the deduction saves a flat 20% on the entire contribution, with that tax benefit available to fund the contribution immediately. This is an arithmetic scenario, not an actual tax bracket or investment forecast.

With $6,000 of net out-of-pocket cost, the Roth deposit is $6,000. The traditional deposit can be $6,000 ÷ (1 − 0.20) = $7,500: a $1,500 tax saving reduces its net cost to $6,000. Both fit the 2026 under-50 ceiling under these assumptions. At 30 years, the growth factor is 1.05³⁰, approximately 4.321942.

The formulas are $7,500 × 1.05³⁰ × (1 − withdrawal tax rate) and $6,000 × 1.05³⁰. In this model, traditional wins at a lower later tax rate, Roth at a higher one, and they tie at equal rates. The traditional account’s larger $32,414.57 pre-withdrawal balance is not all spendable after tax.

Real tax calculations are progressive and can interact with credits and other income. Compare the actual tax reduction from a contribution with the additional tax caused by withdrawals, not your current marginal bracket with your entire retirement-income average. At the contribution ceiling, equal nominal deposits also have different costs: include what happens to the traditional tax saving outside the IRA before declaring a household winner. A nondeductible contribution does not qualify for the gross-up used above.

Withdrawal access is not identical

Publication 590-B distinguishes regular Roth contributions, conversions and earnings. Under the ordering rules, undistributed regular contributions come out first and generally without income tax or the early-distribution additional tax. That does not make all money in a Roth freely withdrawable on the same terms. A qualified earnings withdrawal generally requires the five-tax-year period plus age 59½, disability, death or a qualifying first-home distribution subject to its lifetime limit. Conversions have separate five-year considerations.

Traditional withdrawals can contain taxable money and after-tax basis; Form 8606 records matter. Early taxable withdrawals may also face a 10% additional tax unless an exception applies. Investments can lose value, and withdrawing retirement savings reduces the funds left invested. Keep near-term bills and an emergency reserve in your broader plan.

The IRS RMD FAQ confirms no lifetime RMDs for a Roth IRA’s original owner; beneficiaries have separate rules. Traditional IRA RMDs depend on birth cohort. For example, the final RMD regulations specify age 75 for people born in 1960 or later. Do not apply the age-73 shorthand to everyone or import a workplace plan’s still-working exception into an IRA.

A practical order for making the choice

1. Check the available options. Confirm compensation, existing contributions, filing status, workplace coverage and the two MAGI tests.
2. Compare equal-cost outcomes. Use several future tax scenarios and only count a deduction you qualify for. Neither age nor income alone determines the answer.
3. Consider a split. Eligible contributions to both can diversify future tax treatment, while sharing the annual cap. There is no universally best percentage.
4. Separate contribution from conversion. If direct Roth funding is restricted, review the backdoor Roth and pro-rata rules before assuming a nondeductible contribution can be converted without tax. This is a separate transaction analysis.

Compare the provider’s account and investment costs, choose investments suited to your time horizon and retain contribution and basis records. For a personal tax decision involving phase-outs, conversions or withdrawals, confirm the calculation with a qualified tax professional.