Both accounts let you invest for retirement. Both have the same $7,500 annual contribution limit in 2026. Both grow without any tax on dividends or capital gains while the money sits inside. The difference is when you pay tax: now, or later.

That one timing difference creates meaningfully different outcomes depending on your situation. Getting it right is not complicated once you understand the actual decision you are making.

⚖️
The core question: Will your tax rate be higher today or in retirement? If higher today, the Traditional IRA's upfront deduction is more valuable. If higher in retirement, the Roth's tax-free withdrawals win. If you genuinely do not know, the Roth is usually the better default.

How they actually work

Roth IRA

💰
Contributions: After-tax dollars. No deduction today.
📈
Growth: Completely tax-free inside the account.
🏖️
Withdrawals: Tax-free and penalty-free in retirement.
📋
RMDs: None. You are never forced to withdraw.
💵
Contributions: Can be withdrawn anytime, tax and penalty-free.

Traditional IRA

💰
Contributions: Pre-tax if deductible. Lowers taxable income today.
📈
Growth: Tax-deferred. No tax until you withdraw.
🏖️
Withdrawals: Taxed as ordinary income in retirement.
📋
RMDs: Required starting at age 73.
⚠️
Early access: 10% penalty on withdrawals before 59½.

The math is simpler than it looks

Interactive Calculator

Roth vs Traditional: see your actual numbers

Enter your situation. We show the after-tax outcome of each account over your investment horizon.

When tax rates are identical now and in retirement, a Roth and a Traditional IRA produce exactly the same after-tax wealth. The difference only appears when tax rates differ between contribution and withdrawal. Here is a concrete example using a $7,500 contribution growing at 7% for 30 years:

If you are in the 22% bracket now and expect to be in the 22% bracket in retirement: both accounts deliver the same result mathematically. The Roth pays tax upfront on $7,500 and grows to $57,100 tax-free. The Traditional deducts the $7,500 now, grows to $57,100, then pays 22% tax on withdrawal, leaving $44,500. But the $1,650 you saved in taxes today, invested for 30 years at 7%, also grows to about $12,600, bringing the Traditional's effective total back to roughly the same $57,100.

The Roth wins when your future tax rate is higher. The Traditional wins when your future tax rate is meaningfully lower. When uncertain, the Roth wins on flexibility.

Which situation applies to you

Roth wins
You are earlier in your career and expect your income to grow significantly
Paying tax now at a lower rate and locking in tax-free growth for decades is almost always the better outcome. The earlier the contribution, the more powerful this advantage becomes.
Roth wins
You expect tax rates generally to rise in the future
Nobody can predict future tax policy with certainty. Locking in today's known rate eliminates that uncertainty entirely. Tax diversification between Roth and Traditional accounts is a hedge against an unknowable future.
Roth wins
You want flexibility to access contributions before retirement
Roth IRA contributions, not earnings, can be withdrawn at any time with no tax and no penalty. Traditional IRA withdrawals before 59½ trigger a 10% penalty. The Roth functions as a last-resort accessible reserve in a way the Traditional cannot.
Traditional wins
You are at peak earnings now and expect a lower income in retirement
If you are in the 32% or 35% bracket today and expect to draw from retirement accounts at 22% or lower, the upfront deduction is genuinely more valuable. The Traditional IRA was designed exactly for this situation.
Traditional wins
You need to reduce taxable income this year for a specific reason
A Traditional IRA deduction can push you below a tax threshold, reduce your AGI enough to qualify for other deductions, or manage income around a major financial event. The Roth offers no current-year tax benefit.
Both
You want tax diversification in retirement
Having both Roth and Traditional balances gives you control over your taxable income each year in retirement. You can pull from the Traditional when your income is low and from the Roth when it would push you into a higher bracket. This flexibility has real value that is hard to quantify in advance.

The 2026 income limits

The Traditional IRA has no income limit for contributions, but the deductibility phases out if you or your spouse has a workplace retirement plan. For 2026, single filers covered by a workplace plan lose the deduction between $81,000 and $91,000 of income. Above $91,000, you can still contribute but get no deduction, which largely removes the Traditional's main advantage.

The Roth IRA phases out for single filers between $153,000 and $168,000, and for married couples filing jointly between $242,000 and $252,000. Above $168,000 single or $252,000 married, direct Roth contributions are not permitted. If you are in this range, see the backdoor Roth article.

The default answer for most people

If you are earlier in your career, in the 22% bracket or below, and expect your income to grow over time, the Roth IRA is almost certainly the right choice. The combination of tax-free compounding, no required minimum distributions, and contribution flexibility makes it the more powerful account for most people who are not at peak lifetime earnings right now.

If you are unsure, you can split contributions between both accounts in the same year, as long as the combined total does not exceed $7,500.

The quick version