Roth vs. Traditional IRA: Which Wins for You?

The fundamental difference

Traditional IRA — you contribute pre-tax. Money grows tax-deferred. You pay ordinary income tax on withdrawals.
Roth IRA — you contribute after-tax. Money grows tax-free. Withdrawals (in retirement) are tax-free.

If your tax rate is the same now and in retirement, the two are mathematically identical. The whole game is predicting which is higher.

When Roth wins

You're early in your career (low tax bracket now, likely higher later).
You expect to keep working at a high income into retirement (Bezos, basically).
You want optionality — Roth contributions can be withdrawn penalty-free anytime.
You want to leave money to heirs — Roth has no required minimum distributions during your lifetime.
You think tax rates will rise (current rates are historically low).

When Traditional wins

You're in peak earning years (high bracket now, likely lower in retirement).
You'll retire in a low-tax state and avoid state income tax on withdrawals.
You'll have lower income in retirement and drop to a lower bracket.
You want the tax deduction NOW to fund your IRA contribution effectively.

The "do both" answer

For most people in the 22-24% bracket, the math is roughly a wash. The strategic answer is often:

Get the 401(k) employer match (free money, always).
Max a Roth IRA ($7,000 for 2025, $8,000 if 50+).
Then max Traditional 401(k) up to the $23,500 limit.
If you have more to save, taxable brokerage (or HSA — see our HSA guide).

This gives you tax diversification in retirement — you can pull from Roth or Traditional depending on what minimizes that year's tax bill.

Conversion strategy (Roth conversions)

The Roth IRA Conversion calculator helps with the decision of whether to convert Traditional → Roth. Common scenarios where conversions win:

Gap years — between retirement and Social Security/RMDs, when your income temporarily drops.
Market crashes — convert when account values are low so the future growth is tax-free.
High future RMDs — large Traditional IRAs force big RMDs at age 73; converting earlier smooths the tax bill.

Income limits

For 2025:

Traditional IRA deduction phaseout (if you have a workplace plan): single $77,000-$87,000, married $123,000-$143,000.
Roth IRA contribution phaseout: single $150,000-$165,000, married $236,000-$246,000.

If you're over Roth limits, look into a backdoor Roth conversion (separate strategy).

2026 limits and phase-outs

Item	2026
IRA contribution (all IRAs combined)	$7,500
Catch-up, age 50+	$1,100 ($8,600 total)
Roth phase-out — single	$153,000 - $168,000
Roth phase-out — married filing jointly	$242,000 - $252,000

Figures from IRS Notice 2025-67. The $7,500 is a combined limit across every IRA you hold. Splitting it between a Roth and a Traditional is fine; contributing $7,500 to each is an excess contribution, penalised 6% per year until corrected.

The decision is a bet on one variable

Everything else is detail. The question is whether your marginal tax rate in retirement will be higher or lower than it is today.

Traditional wins if your retirement rate is lower — deduct high now, pay low later.
Roth wins if your retirement rate is higher — pay low now, withdraw tax-free later.
They are mathematically identical if the rate never changes and you invest the tax saving from the Traditional deduction. Most people spend that saving, which quietly favours the Roth in practice.

Who is usually in which camp:

Early career, low bracket → Roth. Your rate will likely never be lower.
Peak earnings, high bracket → Traditional. Deduct at 32-37%, withdraw later at a lower effective rate.
Genuinely uncertain → split. Tax diversification lets you choose which account to draw from later, which is worth something on its own.

Three differences that have nothing to do with tax rates

Required minimum distributions

Traditional IRAs force withdrawals from age 73 whether you need the money or not, and each is taxable income that can lift your bracket or raise Medicare premiums. Roth IRAs have no RMDs during the owner's lifetime. If you plan to leave the account to heirs, that advantage never shows up in a break-even calculation but may dominate the outcome.

The 5-year rules — there are two

Contributions to a Roth can be withdrawn any time, tax and penalty free. It is your own already-taxed money.
Earnings are tax-free only if the account has been open five years and you are 59 1/2 or older.
Each conversion starts its own five-year clock for penalty-free access to the converted amount.

People conflate these, withdraw earnings early, and trigger tax plus a 10% penalty on money they believed was untouchable.

Access before retirement

Because contributions come out freely, a Roth doubles as a deep emergency reserve in a way a Traditional cannot. Pulling from a Traditional before 59 1/2 generally means income tax plus 10%.

The backdoor Roth, concretely

Above the phase-out you cannot contribute to a Roth directly, but there is no income limit on conversions:

Contribute $7,500 to a Traditional IRA, taking no deduction.
Convert it to a Roth, typically within days.
Report both steps on Form 8606.

The trap is the pro-rata rule: the taxable share of the conversion is computed across all your Traditional, SEP and SIMPLE IRA balances, not just the account you converted. Hold $92,500 in a pre-tax IRA, convert your new $7,500, and only 7.5% of the conversion is tax-free — the rest is taxable income. Rolling existing pre-tax balances into an employer 401(k) first removes them from the calculation.

Common mistakes

Contributing to a Roth while over the income limit — an excess contribution, penalised 6% annually until withdrawn or recharacterised.
Forgetting the limit is shared across Roth and Traditional.
Converting a large balance in one year and pushing yourself into a higher bracket. Spreading a conversion over several tax years usually costs less.
Assuming Roth is always better. In a 35% bracket today against a realistic 22% retirement rate, the Traditional deduction is worth more.