I opened my first IRA in 2018 with $200. The brokerage signup flow asked me to choose: Traditional or Roth. I stared at the screen for twenty minutes trying to figure out which one would leave me with more money in forty years. The answer depends entirely on when you pay the tax bill—now or later—and that timing choice has real consequences for how much you keep, when you can access it, and what flexibility you have in retirement.
The short answer
A Traditional IRA gives you a tax deduction when you contribute (if you qualify) and taxes your withdrawals in retirement. A Roth IRA gives you no deduction now, but your withdrawals in retirement are tax-free. Both have the same annual contribution limits—$7,000 in 2024-2025, or $8,000 if you’re 50 or older. According to IRS Publication 590-A, the choice between them is a bet on your tax rate now versus your tax rate in retirement.
Quick comparison
| Feature | Traditional IRA | Roth IRA |
|---|---|---|
| Tax deduction on contribution | Yes (if eligible) | No |
| Tax on withdrawals | Yes, as ordinary income | No |
| Withdrawals before 59½ | 10% penalty + income tax (narrow exceptions) | Contributions anytime penalty-free; earnings subject to penalty |
| Required Minimum Distributions | Yes, starting at age 73 | No, during your lifetime |
| Income limits on contribution | No income limit | Phase-out: $146k–$161k (single), $230k–$240k (married filing jointly) |
| 5-year holding period | Not applicable | Required for tax-free earnings withdrawal |
| Best for | High earners now, lower tax bracket in retirement | Early-career earners, higher expected tax bracket later |
How a Traditional IRA works
You contribute up to the annual limit with pre-tax dollars—meaning you may be able to deduct the contribution on your tax return, which lowers your taxable income that year. Whether you actually get the deduction depends on two things: whether you (or your spouse) are covered by an employer retirement plan, and how much you earn. If you’re not covered by a workplace plan, the contribution is fully deductible regardless of income. If you are covered, your Modified Adjusted Gross Income (MAGI) determines whether you get a full deduction, a partial deduction, or none at all.
Once the money is in the account, it grows tax-deferred. You don’t pay capital gains tax on stock sales or dividend tax on earnings while the money stays in the IRA. That’s the advantage: decades of compounding without an annual tax drag.
The tax bill shows up when you withdraw. Every dollar you take out is taxed as ordinary income at whatever your marginal rate is in retirement. If you’re in the 22% bracket when you retire, you’ll pay 22% on Traditional IRA withdrawals. If you withdraw before age 59½, you’ll also owe a 10% early withdrawal penalty on top of the income tax—unless you qualify for one of the narrow exceptions like disability or a first-time home purchase (up to $10,000 lifetime).
At age 73, the IRS forces you to start taking Required Minimum Distributions (RMDs). You must withdraw a percentage of your account balance each year based on IRS life expectancy tables, as outlined in IRS Topic 451. Miss an RMD and the penalty is 25% of the amount you should have withdrawn—reduced to 10% if you correct it within two years. You cannot avoid this. The government deferred the tax; now it wants its cut.
How a Roth IRA works
You contribute with after-tax dollars. No deduction. You’ve already paid income tax on the money before it goes into the account.
The Roth advantages come later. Your money grows tax-free, and when you withdraw in retirement, you owe nothing—no income tax, no capital gains tax. That’s the trade: pay tax now, never again.
There are conditions. To withdraw earnings tax-free, you need to meet two requirements: the account must have been open for at least five tax years, and you must be 59½ or older (or meet one of the exceptions: disability, death, or first-time home purchase up to $10,000). If you withdraw earnings before meeting those conditions, you’ll pay income tax plus a 10% penalty on the earnings portion.
Here’s the part that surprises people: you can withdraw your contributions anytime, tax-free and penalty-free. If you put $7,000 into a Roth IRA this year and need $5,000 back in three years, you can take it. No penalty. No tax. You only contributed $7,000, so you’re just pulling out money you already paid tax on. The earnings stay locked until you’re 59½, but the contributions are yours.
Roth IRAs have no RMDs during your lifetime. You can leave the money untouched as long as you want. (Beneficiaries who inherit the account do have distribution rules under the SECURE Act.)
The catch: income limits. In 2024, single filers earning between $146,000 and $161,000 see their contribution limit phase out; above $161,000, you cannot contribute at all. For married couples filing jointly, the phase-out range is $230,000 to $240,000. These limits adjust for inflation each year. Full details are in IRS Publication 590-B.
The tax-rate math that actually matters
Instead of vague advice about “higher or lower brackets later,” here’s concrete math. If you’re in the 22% bracket now and expect to be in the 24% bracket in retirement, a $7,000 Roth contribution costs you nothing upfront (you already paid the 22% tax on that income) but saves you 24% on withdrawals later. The lifetime tax savings: $7,000 × (24% - 22%) = $140 in your favor.
Now flip it. If you’re 24% now and expect 22% in retirement, a $7,000 Traditional IRA contribution saves you $1,680 in taxes this year (24% of $7,000), and you’ll pay $1,540 when you withdraw it later (22% of $7,000). Net savings: $140 in your favor.
The math is simple. The hard part is predicting your future tax bracket and the future tax code. I can’t do that. Nobody can. Tax laws change—the 2017 Tax Cuts and Jobs Act dropped the top rate from 39.6% to 37%, and those cuts expire in 2026 unless Congress extends them. You’re making an educated guess, not a certainty.
The spousal IRA strategy most people miss
If you’re married filing jointly and one spouse has little or no earned income, you can still contribute to an IRA for the non-working spouse using the working spouse’s income. This is called a spousal IRA, and it effectively doubles your household’s annual contribution limit from $7,000 to $14,000 (or $16,000 if both spouses are 50 or older).
You can choose Traditional or Roth for each spouse independently. The working spouse could contribute to a Traditional IRA while the non-working spouse contributes to a Roth, or any combination. The only requirements: you must file jointly, and the working spouse must have earned income at least equal to the total contributions for both spouses.
This strategy is buried in IRS Publication 590-A under the spousal IRA rules, and most single-income households miss it. It’s one of the few places where the tax code lets you contribute retirement money for someone who didn’t technically earn it.
The differences that actually matter
Beyond the tax timing, three things separate these accounts in ways that affect real decisions:
Withdrawal flexibility. Traditional IRAs lock up everything until 59½—touch it early and you pay tax plus a 10% penalty. Roth IRAs let you pull contributions anytime. If you’re 35 and building retirement savings but worried about tying up money for decades, the Roth gives you a way out if life happens. It’s not ideal—you’re robbing future growth—but the penalty-free escape hatch exists.
RMDs. Traditional IRAs force withdrawals starting at 73 whether you need the money or not. If you’re still working or have other income, those mandatory withdrawals can push you into a higher tax bracket or increase your Medicare premiums. Roth IRAs have no RMDs. If you don’t need the money, you can leave it to grow.
Tax-rate assumptions. The standard advice is “choose Traditional if you expect lower tax rates in retirement; choose Roth if you expect higher rates.” That’s true, but it requires predicting your future tax situation and the future tax code—which is why I showed you the actual dollar math above.
Which one fits your situation
Here’s a decision framework that doesn’t rely on speculation:
Choose a Traditional IRA if:
- You’re in a high tax bracket now and expect a lower one in retirement
- You want an immediate tax deduction to lower this year’s taxable income
- You’re not covered by an employer plan, or you are but your income qualifies for the deduction
- You’re confident you won’t need early access to the money
Choose a Roth IRA if:
- You’re early in your career and expect higher earnings (and higher tax rates) later
- You want tax-free withdrawals in retirement
- You value the option to withdraw contributions penalty-free if needed
- You want to avoid RMDs or leave tax-free money to heirs
- Your income is below the Roth limits
You can have both. The $7,000 annual limit applies across all your IRAs combined—so you could put $4,000 in a Traditional and $3,000 in a Roth in the same year. Some people split contributions to hedge the tax-rate bet.
The high-earner workaround and the pro-rata gotcha
If your income is above the Roth limits, you can’t contribute directly. But there’s a legal workaround called a backdoor Roth conversion: you contribute to a Traditional IRA (which has no income limits for contributions, only for deductibility), then immediately convert that Traditional IRA to a Roth. The conversion is a taxable event—you’ll pay income tax on any pre-tax dollars and earnings you convert—but there’s no income limit on conversions.
Here’s the gotcha that catches people: the IRS pro-rata rule. If you have any existing Traditional IRA, SEP-IRA, or SIMPLE IRA balances with pre-tax money in them, the IRS aggregates all your Traditional IRAs to calculate what portion of your conversion is taxable. You can’t cherry-pick which dollars to convert.
Concrete example: You contribute $7,000 to a non-deductible Traditional IRA (after-tax money) and want to convert just that $7,000 to a Roth. But you also have an old rollover IRA from a previous job with $63,000 of pre-tax money in it. Your total Traditional IRA balance across all accounts is now $70,000. When you convert the $7,000, the IRS says 90% of that conversion ($63,000 ÷ $70,000) is taxable because 90% of your total IRA money is pre-tax. You’ll owe income tax on $6,300 of the $7,000 conversion—even though you just put in $7,000 of after-tax money.
This disqualifies the backdoor Roth strategy for anyone with a pre-tax IRA balance unless they’re willing to convert (and pay tax on) the entire balance or roll the old IRA into a current employer’s 401(k) first to zero it out. The pro-rata rule is explained in IRS Publication 590-A, and it’s the most common mistake high earners make when attempting backdoor Roth conversions.
One more thing: Roth conversions cannot be reversed. Before 2018, you could “recharacterize” a conversion if you regretted it. That’s gone. Once you convert, the tax bill is locked in.
What can go wrong
With a Traditional IRA: You might end up in a higher tax bracket in retirement than you expected—either because your income is higher, or because tax rates went up, or because RMDs push you over a threshold. You saved 22% on contributions but pay 24% on withdrawals, and you lost the bet.
Early withdrawal penalties are harsh if you need money before 59½. Some exceptions exist, but they’re narrow. Medical expenses above a certain threshold, disability, and the first-time home purchase exception are the main ones. “I lost my job” or “I need a new car” don’t qualify.
With a Roth IRA: If you’re in a high tax bracket now and a low one in retirement, you paid a higher tax rate than you needed to. You gave up the deduction when it was worth 32%, then withdrew tax-free when you’re only in the 12% bracket. A Traditional IRA would have saved you money.
The 5-year rule trips people up. If you open your first Roth IRA at age 58, you cannot take tax-free withdrawals of earnings until age 63—even though you’re over 59½. The account has to exist for five tax years first.
Roth conversions can spike your income in one year, which can affect things outside of just your tax bill: ACA subsidies, Medicare premiums, state taxes. Plan carefully.
FAQ
Can I have both a Roth and Traditional IRA?
Yes. You can contribute to both in the same year, but your total contributions across all IRAs cannot exceed the annual limit ($7,000 in 2024-2025, or $8,000 if you’re 50 or older).
What’s the income limit for a Roth IRA?
For 2024, single filers phase out between $146,000 and $161,000; married filing jointly phase out between $230,000 and $240,000. Above the upper limit, you cannot contribute directly. The IRS adjusts these limits for inflation annually. Tax laws and contribution limits vary by state and jurisdiction.
Can my spouse contribute to an IRA if they don’t work?
Yes, if you file jointly and the working spouse has enough earned income to cover both contributions. This is called a spousal IRA. You can contribute up to $7,000 for the non-working spouse (or $8,000 if they’re 50 or older), effectively doubling your household’s annual retirement contributions.
Can I withdraw from my Roth IRA early without penalty?
You can withdraw your contributions anytime without penalty or tax—you already paid tax on that money. Withdrawing earnings before age 59½ and before the account has been open five tax years will trigger income tax plus a 10% penalty, unless you qualify for an exception like disability or a first-time home purchase.
What happens if I don’t take my RMD from a Traditional IRA?
The penalty is 25% of the amount you failed to withdraw. If you correct the mistake within two years, the penalty drops to 10%. RMDs are mandatory starting the year you turn 73.
Can I convert a Traditional IRA to a Roth?
Yes. There’s no income limit on conversions. You’ll owe income tax on the amount you convert (including pre-tax contributions and all earnings), but once it’s in the Roth, future growth is tax-free. Watch out for the pro-rata rule if you have multiple IRAs with pre-tax balances—the IRS will aggregate them all to calculate your tax bill.
Both account types use the same investments at the same brokerages—stocks, bonds, mutual funds. The structure differs, not what you can own inside.
Tax laws vary by state and jurisdiction. This article explains how these accounts work, not which is “better” for you—that depends on your specific circumstances.
This is not financial advice. If you’re unsure which account fits your situation, consult a tax professional or financial advisor who can review your actual income, deductions, and retirement timeline.
About the author: Quinn Sutherland covers personal finance and investing for FinovaDaily. This article does not constitute financial or tax advice.