Roth vs. Traditional IRA: Which Saves You More

Tax now or tax later

A deductible traditional IRA contribution may reduce current taxable income; withdrawals are generally taxable. A Roth contribution receives no current deduction, but qualified withdrawals are generally tax-free. Both can compound without annual tax on internal gains.

If the marginal tax rate is identical at contribution and withdrawal and the same pre-tax economic amount is invested, the outcomes are mathematically similar. Roth tends to improve when the future rate is higher; traditional tends to improve when today’s deduction rate is higher.

Worked example on equal pre-tax cost

Assume $10,000 of pre-tax resources, a 24% current marginal rate, 30 years, and 7% growth.

• Traditional: invest $10,000; it grows to about $76,123. At a 22% withdrawal tax rate, net value is about $59,376.
• Roth: pay $2,400 of current tax and invest $7,600; it grows tax-free to about $57,853.

Traditional wins this illustration because the withdrawal rate is lower. At equal rates, results converge. This simplified comparison ignores state tax, deduction eligibility, timing, and distribution rules; use the Roth IRA calculator for growth scenarios.

2026 contribution and income rules

The 2026 combined limit across all traditional and Roth IRAs is $7,500, or $8,600 for someone age 50 or older, limited further by taxable compensation. It is one shared limit—not $7,500 for each account type.

Direct Roth eligibility phases out with modified adjusted gross income. For 2026 the range is $153,000–$168,000 for single and head-of-household filers and $242,000–$252,000 for married filing jointly. Traditional IRA contributions may be allowed at higher incomes, but deductibility can phase out when the contributor or spouse is covered by a workplace plan.

Verify filing status and current IRS worksheets. A nondeductible traditional contribution requires correct basis reporting; “backdoor Roth” strategies add conversion and pro-rata rules that may require tax advice.

Other differences

Roth IRAs have no lifetime required minimum distributions for the original owner under current federal rules, while traditional IRAs generally do. Roth contribution basis has different withdrawal treatment from earnings, but using retirement money early sacrifices growth and rules must be followed.

Tax diversification can justify using both. Future tax rates, income, deductions, state residence, and withdrawal flexibility are uncertain; splitting contributions can avoid making one all-or-nothing forecast.

Frequently asked questions

Can I have both types?

Yes, if eligible, but contributions share one annual IRA limit.

Is Roth always better for a young worker?

No, but a low current marginal rate and long growth horizon often strengthen its case. Current deduction value and future income still matter.

Does a workplace 401(k) block IRA contributions?

No. It can affect traditional deduction eligibility, and income can limit direct Roth contributions.