Roth vs Traditional IRA: Which Is Better for Your Taxes?
A traditional IRA deducts contributions now and taxes withdrawals later. A Roth IRA taxes contributions now and never taxes qualified withdrawals. If your tax rate is the same on both ends, the outcomes are identical to the dollar. The entire decision is a comparison of two tax rates — today's and retirement's — plus a few rules that break the tie.
The maths of the tie
Contribute $7,500 at a 22% bracket. Traditional: the full $7,500 goes in (saving $1,650 of tax now), grows for 30 years at 7% to about $57,100, and is taxed at withdrawal. At 22%, you keep $44,500. Roth: you pay the $1,650 now, contribute $5,850 of after-tax money... to compare fairly, invest the same total outlay — $7,500 of earnings. After tax, $5,850 goes into the Roth and grows to about $44,500, tax-free. Identical. Change the retirement bracket to 12% and traditional wins; change it to 32% and Roth wins by a wide margin.
Most early-career savers are in the 12% or 22% bracket with decades of raises ahead — Roth contributions at a known, low rate are usually the better bet. Peak-earning years in the 32%+ brackets favour traditional deductions. Many households end up holding both, which creates tax diversification: in retirement you can choose which account funds each year, managing brackets year by year.
- 2026 contribution limit: $7,500 under 50; $8,600 at 50+. Verify current limits with the IRS before contributing.
- Roth contributions (not earnings) can be withdrawn any time without tax or penalty — a flexibility traditional IRAs do not offer.
- Traditional IRAs force required minimum distributions in your 70s; Roth IRAs do not for the original owner.
- Roth income limits can be worked around via the backdoor Roth — a conversion with paperwork that must be done correctly.
Questions, answered
Can I convert a traditional IRA to a Roth?
Yes — a Roth conversion. The converted amount is taxed as income in the conversion year, so conversions are cheapest in low-income years, such as early retirement before Social Security starts.
Which is better if I expect tax rates to rise generally?
Rising future rates favour the Roth: you lock in today's lower rate and future withdrawals are insulated from whatever Congress does next.
Reviewed by Tahir Shehzad, ACMA. Figures are reviewed against the sources on our methodology page. This guide is education, not personal financial advice.