Roth vs Traditional IRA: Which Should You Pick?
Traditional IRA gives you a tax deduction now and pays tax in retirement; Roth pays tax now and grows tax-free forever. The conventional wisdom — pick traditional if you expect a lower tax rate in retirement, Roth if higher — is right but incomplete. Here is the full decision framework.
Use the calculator
IRA Calculator
Step-by-step
- 1
Identify your current marginal tax bracket
2026 federal brackets for single filers: 10% up to $11,925, 12% to $48,475, 22% to $103,350, 24% to $197,300, 32% to $250,525, 35% to $626,350, 37% above. State income tax adds 0–13% on top. Your "marginal" bracket is what the next dollar saved would be taxed at.
- 2
Estimate your retirement marginal bracket
In retirement, your taxable income is Social Security (up to 85% taxable) + traditional IRA/401(k) withdrawals + pension + part-time work. Most retirees end up in the 12–22% bracket. The standard deduction ($14,600 single, $29,200 married in 2026) covers the first chunk tax-free.
- 3
Pick traditional if current bracket > expected retirement bracket
A high earner at 32% federal + 6% state (38% combined) saving in traditional now and withdrawing in the 22% retirement bracket nets a 16-percentage-point arbitrage. On $7,000 of contributions, that is $1,120 of pure tax savings per year that compounds tax-deferred.
- 4
Pick Roth if current bracket ≤ expected retirement bracket
A 25-year-old in the 12–22% bracket who expects to be a high-income retiree (significant taxable accounts + RMDs + Social Security) should max Roth. Tax-free withdrawals in retirement are extraordinarily valuable for high earners.
- 5
Use Roth for "tax diversification" even when math is close
When current and expected retirement brackets are similar, lean Roth for flexibility. Roth contributions can be withdrawn anytime tax- and penalty-free; Roth accounts have no Required Minimum Distributions during your lifetime; Roth dollars stretch further in estate planning.
- 6
Check the income limits for direct contributions
2026 Roth IRA contribution phase-out: $150K–$165K single, $236K–$246K married filing jointly. Above the upper bound, direct Roth contributions are not allowed — but the "backdoor Roth" (contribute to traditional non-deductible, then convert) is a clean workaround for high earners.
- 7
Mix both if you cannot decide
Many people split contributions: max 401(k) traditional (up to employer match + above), max Roth IRA on the side. This builds tax-diversified buckets that you can pull from optimally in retirement based on each year's tax situation.
💡 Tips
- Roth contributions (not earnings) can be withdrawn anytime, tax-free and penalty-free, regardless of age or holding period. This makes Roth IRA a backstop emergency fund — not ideal, but available.
- If you expect to retire early (before 59.5), Roth is more flexible. The Roth conversion ladder lets you access traditional 401(k) money tax-free 5 years after each conversion year.
- After 50, Roth catch-up contributions get tricky — under SECURE 2.0, high-income earners (roughly $145K+ wages) must do their 401(k) catch-up as Roth. Plan for this in tax projections.
FAQ
Can I contribute to both a Roth and traditional IRA in the same year?
Yes, but the combined annual limit applies — $7,000 total in 2026 (or $8,000 if 50+). You can split it however you want: $4,000 Roth + $3,000 traditional, or any other combination.
What is a backdoor Roth IRA?
A two-step process for high earners above the direct-Roth income limit: contribute to a non-deductible traditional IRA, then convert that contribution to a Roth. Legal under current law and explicitly named in IRS guidance. Watch the "pro-rata rule" if you have other pre-tax IRA balances — conversions become partially taxable.
Should I convert my traditional IRA to Roth?
It depends on the conversion year's tax bracket. Best in low-income years (between jobs, early retirement before Social Security starts, sabbatical years) when your marginal rate temporarily drops. Avoid converting in your peak earning years.
Do I lose my Roth tax-free growth if I withdraw early?
Contributions can come out anytime tax- and penalty-free. Earnings withdrawn before 59.5 (and before 5 years from first contribution) are subject to 10% penalty + ordinary income tax — except for first-time home purchase ($10K lifetime), qualified education, disability, and a few other exceptions.
Are Roth IRA earnings really tax-free?
Yes, if you meet the qualified distribution rules: account at least 5 years old AND distribution after age 59.5 (or due to disability, first-time home purchase up to $10K, or death). Otherwise earnings portions are subject to tax + penalty until you meet both conditions.