Roth vs. Traditional IRA: How to Think About Which One Fits

The biggest difference between these two retirement accounts is when you pay tax, and that choice can shape your savings for decades.

If you're starting to save for retirement, you've probably run into the alphabet soup: IRA, Roth IRA, traditional IRA. It can feel like there's a secret right answer that everyone else already knows.

There isn't one perfect choice for everyone. But once you understand the core trade-off, the decision gets much clearer. This guide explains how each account works, the rules that matter most and some questions couples may want to talk through together.

What an IRA is

An IRA, or individual retirement arrangement, is a personal retirement account you open yourself, usually at a bank, brokerage or other financial company. It's separate from any workplace plan, like a 401(k), that you might have through your job.

An IRA is like a container. Inside it, you choose what to invest in, such as funds, stocks or bonds. The container's job is to give your money tax advantages while it grows.

To contribute to either type of IRA, the IRS says you need taxable compensation, which generally means money earned from working, like wages or self-employment income. There's also a yearly limit on how much you can put in, and that limit is shared across all your IRAs, Roth and traditional combined. The limit can change, so check the current amount on irs.gov before you contribute.

The core difference: pay tax now or later

Here's the heart of it.

Traditional IRA: you may get a tax break now and pay tax later.

• You may be able to deduct your contributions on your tax return, which lowers your taxable income for that year.
• Your money grows without being taxed each year.
• When you withdraw in retirement, the IRS says withdrawals of deductible contributions and earnings are taxable as income.

Roth IRA: you pay tax now and may get tax-free money later.

• The IRS is direct about this: contributions to a Roth IRA aren't deductible.
• Your money grows without being taxed each year.
• If a withdrawal is a "qualified distribution," the earnings come out tax-free. (More on that term below.)

So the big question is: would you rather pay tax on this money now, at today's tax rate, or later, at whatever your tax rate is in retirement?

How people often think about the choice

No one knows their future tax rate for sure. Tax laws change, and so do incomes. Still, a few patterns can help frame the decision.

A Roth may appeal to you if:

• You're early in your career and expect your income to rise over time.
• You think your tax rate in retirement could be the same or higher than it is today.
• You like the idea of having tax-free money to draw on later.

A traditional IRA may appeal to you if:

• You want to lower your tax bill now.
• You expect your income, and your tax rate, to be lower in retirement.
• You're in a higher-earning stretch of your career right now.

Some people split the difference and contribute to both types over the years. That can give you some flexibility in retirement to choose which bucket to draw from.

The rules that trip people up

Income limits for Roth IRAs. The IRS says your ability to contribute to a Roth IRA may be limited based on your filing status and income. Specifically, it depends on your modified adjusted gross income (MAGI), a version of your income used for certain tax calculations. The income ranges change, so look up the current figures on irs.gov.

Deduction limits for traditional IRAs. The IRS says there is no age limit on making regular contributions to traditional or Roth IRAs, as long as you have taxable compensation. But the deduction isn't always available. According to the IRS, your deduction may be limited if you or your spouse are covered by a retirement plan at work and your income is above certain levels. This matters a lot for couples: one spouse's workplace plan can affect the other spouse's deduction.

What "qualified distribution" means. For a Roth IRA, earnings are tax-free when the withdrawal is qualified. The IRS gives this example: a distribution made after age 59½ and after the five-year period that begins with the first tax year you contributed to a Roth IRA. Other situations can also qualify; IRS Publication 590-B has the full details.

Taking out your own contributions. The IRS says Roth IRA distributions that are a return of your contributions aren't subject to tax. Earnings are a different story, so it's worth understanding the rules before you withdraw.

Early withdrawals. For both account types, taking money out before age 59½ may mean an additional 10% tax on top of regular income tax, unless you qualify for an exception.

Required minimum distributions (RMDs). With a traditional IRA, you generally must start taking money out once you reach a certain age; these required withdrawals are called RMDs. With a Roth IRA, the IRS says that if you're the original owner, you don't have to take distributions regardless of your age.

The deadline. According to the IRS, you can make IRA contributions for a given tax year up until your tax return filing deadline, not including extensions.

What married couples should know

Being married changes a few things.

The spousal IRA. Normally you need your own taxable compensation to contribute. But the IRS says that if you file a joint return, you may be able to contribute to an IRA even without your own taxable compensation, as long as your spouse has it. This can help a stay-at-home parent or a spouse in school keep building their own retirement savings.

Filing status matters. Both the Roth income limits and the traditional IRA deduction limits depend on filing status. If you've recently married, your eligibility may look different than it did when you were single.

Each person owns their own IRA. There's no such thing as a joint IRA. Each spouse has their own account in their own name, though you'll likely want to plan them together.

Questions you might talk through as a couple:

• Do we expect our income to grow, stay steady or drop over the next several years?
• Is one of us covered by a workplace retirement plan? Does it offer a match we may want to capture first?
• Would we rather have a tax break now, or more tax-free income later?
• Does either of us have a gap in earnings where a spousal IRA could help?

How to get started

1. Check the current limits on irs.gov. Look up the current contribution limit, Roth income ranges and traditional IRA deduction ranges.
2. Pick where to open the account. Compare fees, investment choices and minimums.
3. Choose your investments. Opening the account is only step one; money sitting in cash inside an IRA won't grow much.
4. Automate it. Small, regular contributions can add up and build the habit.
5. Revisit once a year. If your income or filing status changes, the better fit might change too.

This article is for education only and is not financial advice. Everyone's situation is different.