Traditional vs. Roth IRA: which should you choose?
The entire decision turns on one question: is your tax rate higher now or in retirement? Here is how to choose, plus the 2026 contribution and income limits.
Traditional and Roth IRAs are the same account wrapper with the taxes flipped. A traditional IRA gives you a deduction now and taxes withdrawals later; a Roth gives no deduction now but lets withdrawals come out tax-free in retirement. The decision turns on one variable — where your tax rate is headed — and this guide walks you through the rules, the math, the 2026 limits, and the scenarios where each one wins.
How each account works
Both accounts are tax-advantaged retirement wrappers that you open at a brokerage and fund with earned income. Inside, your investments grow without annual taxes on dividends or capital gains. The difference is purely about when the IRS takes its cut.
With a traditional IRA, eligible contributions are deductible, so you lower your taxable income today and pay ordinary income tax on every dollar you withdraw in retirement. With a Roth IRA, you contribute money you have already paid tax on, and qualified withdrawals — contributions and all the growth — come out completely tax-free.
That single flip cascades into other differences: required minimum distributions, early-withdrawal rules, and who is even allowed to contribute. The table below is the fastest way to see them side by side.
The core difference at a glance
| Traditional IRA | Roth IRA | |
|---|---|---|
| Contributions | Pre-tax (deduction now) | After-tax (no deduction) |
| Growth | Tax-deferred | Tax-free |
| Withdrawals in retirement | Taxed as income | Tax-free |
| RMDs | Yes, at 73 (born 1951–1959) or 75 (born 1960+) | None during your lifetime |
| Income limit to contribute | None (deduction may phase out) | Yes, contributions phase out at higher incomes |
| Early withdrawal of contributions | Taxed + 10% penalty | Contributions out anytime, tax/penalty-free |
Notice that only the Roth caps who can contribute based on income, while only the traditional caps the deduction. Those two rules trip up the most people, so they get their own section below.
2026 limits and income rules
- Contribution limit: $7,500 if you are under 50, or $8,600 if you are 50 or older, combined across all of your IRAs. You also need at least that much in earned income (wages or self-employment), and a non-working spouse can use a spousal IRA based on the working spouse's income.
- Roth income phase-out: the ability to contribute directly to a Roth phases out as your modified adjusted gross income (MAGI) rises. For 2026 the phase-out range is $153,000–$168,000 if you are single or head of household, $242,000–$252,000 if married filing jointly, and $0–$10,000 if married filing separately. Above the top of the range, direct Roth contributions are off the table — high earners use a "backdoor Roth" instead (contribute to a traditional IRA, then convert).
- Traditional deduction phase-out: anyone with earned income can contribute to a traditional IRA, but the deduction can shrink or disappear if you (or a spouse) are covered by a workplace plan and earn above set thresholds. For 2026, if you are covered by a workplace plan, the deduction phases out at MAGI of $81,000–$91,000 (single or head of household) or $129,000–$149,000 (married filing jointly); if only your spouse is covered, it phases out at $242,000–$252,000. Without the deduction, a traditional IRA loses most of its appeal versus a Roth.
The exact dollar thresholds change most years, so confirm current figures before you contribute. The IRS keeps them up to date in its IRA hub and in Publication 590-A, which covers contributions and deductions in detail.
A worked example: same money, different tax bill
Numbers make the tradeoff concrete. Say you invest $7,000 and it grows to $28,000 over time (roughly four-fold), and you are in a 22% bracket while working.
With the Roth, you pay tax on the $7,000 today. At 22% that costs you about $1,540 in foregone deduction — but the full $28,000 comes out tax-free later. With the traditional, you deduct the $7,000 now (saving that $1,540 today), but if you are still in the 22% bracket in retirement you owe about $6,160 in tax on the $28,000 withdrawal.
If your bracket is identical in both phases (and you are not up against the annual cap), the two accounts produce the same after-tax result — the math is symmetric. The Roth pulls ahead only if your retirement rate is higher than 22%; the traditional pulls ahead only if it is lower. The table makes the break points visible.
| Tax rate in retirement | Roth after-tax value | Traditional after-tax value | Winner |
|---|---|---|---|
| 12% (lower than today) | $28,000 | ≈ $31,590 | Traditional |
| 22% (same as today) | $28,000 | $28,000 | Tie |
| 32% (higher than today) | $28,000 | ≈ $24,410 | Roth |
How the traditional column works: $7,000 into a Roth costs the same after-tax dollars as about $8,974 into a traditional IRA, because the 22% deduction refunds part of it. Growing four-fold, that is $35,897 before tax, and the column shows what is left after tax at each retirement rate. This assumes the traditional saver invests the tax saved by the deduction rather than spending it; if you spend the deduction, the Roth's larger tax-free balance wins in every row. One more wrinkle: the annual cap is the same dollar amount for both accounts, and $8,974 is more than the 2026 cap ($7,500, or $8,600 at 50+). If you contribute the maximum, the tax a traditional deduction saves has to go into a regular taxable account, where its growth is taxed along the way, so at equal tax rates a maxed-out Roth comes out slightly ahead.
When a Roth wins
Choose a Roth if you expect a higher tax rate in retirement than you face today — common if you are young, early-career, or temporarily in a low bracket. You lock in today's rate and let decades of growth escape tax entirely.
A Roth also brings perks the traditional cannot match:
- No lifetime RMDs, so the balance keeps compounding for as long as you like.
- Tax-free inheritance for heirs, who get tax-free withdrawals (though they generally must empty the account within 10 years).
- Flexibility: your contributions are withdrawable anytime, tax- and penalty-free, which makes a Roth a reasonable backstop emergency reserve for younger savers.
Roth dollars are also valuable for tax-rate control in retirement — drawing from a Roth does not raise your taxable income, which can help keep Social Security and Medicare costs down.
When a traditional wins
Choose a traditional IRA if you are in a high bracket now and realistically expect a lower one in retirement. The upfront deduction is worth more when your current rate is high, and you defer the tax bill to a cheaper future year.
The traditional is also the natural landing spot for a 401(k) rollover, since pre-tax 401(k) money rolls into a traditional IRA without triggering tax. And if a workplace plan covers neither you nor your spouse, your traditional contribution is fully deductible regardless of income — a clean way to cut this year's tax bill.
Not sure? Split the difference.
Tax diversification — holding both — hedges the simple fact that nobody knows future tax rates. A common path is to favor a Roth early, when income and brackets are low, then shift toward traditional as earnings climb and the deduction becomes more valuable.
Splitting also gives you a lever in retirement: in a high-income year you can draw from the Roth to avoid bumping your bracket, and in a low-income year you can pull from the traditional or even do a partial Roth conversion at a low rate. The SEC's investor education site and CFPB retirement tools are solid neutral starting points if you want to model your own numbers.
Mistakes to avoid
- Double-counting the limit. The annual cap is combined across all IRAs. Contributing the full amount to both a Roth and a traditional creates an excess contribution penalized 6% per year until you fix it.
- Ignoring the pro-rata rule on a backdoor Roth. If you hold other pre-tax IRA money, the IRS treats your conversion as partly taxable, so the "free" backdoor can come with a surprise bill.
- Putting non-deductible money in a traditional IRA. If your deduction is phased out, a non-deductible traditional contribution is usually worse than a Roth — you get no break now and still owe tax on the growth.
- Forgetting to invest the cash. An IRA is just the wrapper; money that lands in the settlement account and sits uninvested earns next to nothing.
How to open one and next steps
- Estimate your bracket now vs. later. If today's rate is clearly higher, lean traditional; if it is clearly lower, lean Roth; if it is a toss-up, split.
- Check the income rules on irs.gov to confirm you can contribute directly to a Roth or deduct a traditional contribution.
- Open the account at a low-cost brokerage, fund it up to the limit, and — this is the step people miss — actually invest the cash in a diversified fund.
- Automate it with monthly transfers so you reach the annual limit without timing the market.
If you are consolidating an old workplace account, start with our guide to how to roll over a 401(k), which feeds directly into the traditional-vs-Roth decision.
Related: how to roll over a 401(k).
