A Roth IRA uses after-tax money, not pretax money

No, a Roth IRA is not pretax. You contribute money that you have already paid income tax on. That is the core difference between a Roth IRA and a traditional IRA, which does use pretax contributions.

When you put money into a Roth IRA, the dollars come from your paycheck after taxes have been taken out. You do not get a tax deduction in the year you contribute. But because you paid tax upfront, the money grows tax-free inside the account, and you withdraw it tax-free in retirement. A traditional IRA works the opposite way: you deduct the contribution now, pay tax later when you withdraw.

This distinction matters because it changes how much you actually set aside, how much you owe the IRS, and how much you have available to spend in retirement.

Key Takeaways

  • Roth IRA contributions come from after-tax income, so you cannot deduct them from your taxes in the year you contribute.
  • Traditional IRA contributions are pretax, meaning you reduce your taxable income now and pay tax when you withdraw in retirement.
  • Roth withdrawals in retirement are completely tax-free, while traditional IRA withdrawals are taxed as ordinary income.
  • Your income level determines whether you can contribute to a Roth IRA at all, whereas traditional IRA contributions are available to anyone with earned income.

How pretax and after-tax contributions change what you owe

With a pretax contribution to a traditional IRA, you reduce your taxable income for that year. If you earn $60,000 and contribute $7,000 to a traditional IRA, your taxable income drops to $53,000. You pay less tax now, but you owe tax on every dollar you withdraw later.

With an after-tax contribution to a Roth IRA, your taxable income stays the same. That $7,000 comes from money you already paid tax on. You get no deduction, so you pay the same tax whether you contribute or not. The payoff is that future withdrawals owe nothing.

The choice between them often comes down to whether you expect to be in a higher or lower tax bracket in retirement. If you think you will earn less in retirement, a traditional IRA saves you more money overall. If you think you will earn the same or more, a Roth usually wins because you lock in today's tax rate and pay nothing later.

Income limits that apply only to Roth IRAs

Because Roth contributions are after-tax, the IRS limits who can contribute based on income. The income limits change each year and depend on your filing status.

For 2024, if you file as single, you can contribute the full amount if your modified adjusted gross income (MAGI) is below $146,000. The contribution phases out between $146,000 and $161,000, and you cannot contribute at all above $161,000. If you are married filing jointly, the phase-out range is $230,000 to $240,000. These numbers shift annually.

Traditional IRAs have no income limit for contributions. Anyone with earned income can contribute, regardless of how much they make. However, if you have access to a workplace retirement plan like a 401(k), the tax deduction for a traditional IRA contribution may phase out based on income.

Withdrawal rules differ between Roth and traditional accounts

Because you already paid tax on Roth contributions, you can withdraw your contributions (not the earnings) at any time without penalty or tax. This is one reason people use Roth IRAs as an emergency fund — the money is there if you need it, though taking earnings out early usually triggers a 10% penalty plus income tax.

Traditional IRA withdrawals are different. You cannot touch the money before age 59½ without a 10% penalty, with some exceptions. When you do withdraw, the entire amount is taxed as ordinary income because you never paid tax on it going in.

At age 73, you must begin taking required minimum distributions (RMDs) from a traditional IRA. Roth IRAs have no RMD requirement during your lifetime, which makes them useful for leaving money to heirs or letting it grow longer.

Which account makes sense depends on your tax situation now

Choose a Roth IRA if you are in a low tax bracket now and expect to be in a higher one later, or if you simply want the certainty of knowing you will owe no tax on withdrawals. Roth accounts also work well if you want to leave money to heirs tax-free or if you want flexibility to access contributions in an emergency.

Choose a traditional IRA if you are in a high tax bracket now and want to reduce your taxable income this year, or if you expect to be in a lower bracket in retirement. A traditional IRA is also the only choice if your income is too high for a Roth contribution.

Many people use both. You can contribute to a traditional IRA and a Roth IRA in the same year, as long as your combined contributions do not exceed the annual limit ($7,000 for 2024 if you are under 50, or $8,000 if you are 50 or older).

How to decide between them in practice

Start by looking at your current tax bracket and your expected retirement income. If you are unsure about retirement income, a Roth is often the safer choice because tax rates may rise in the future, and locking in today's rate protects you.

Next, check whether you are within the Roth income limits. If your MAGI is above the phase-out range for your filing status, a traditional IRA or a workplace plan like a 401(k) may be your only option.

Finally, consider your timeline. If you will not need the money for decades, a Roth's tax-free growth compounds longer. If you need a tax deduction now to lower your current bill, a traditional IRA delivers that immediately.

Frequently Asked Questions

Can I convert a traditional IRA to a Roth IRA?

Yes. A Roth conversion means moving money from a traditional IRA to a Roth IRA. You pay income tax on the amount converted in that year, but the money then grows tax-free. Conversions are useful if you expect tax rates to rise or if you want to reduce future RMDs.

What happens if I earn too much to contribute to a Roth?

If your income exceeds the Roth phase-out range, you cannot contribute directly. However, you can contribute to a traditional IRA and then convert it to a Roth (called a "backdoor Roth"), though this strategy has tax complications if you already have traditional IRA balances. Consult a tax professional before attempting this.

Do I have to report Roth contributions to the IRS?

Yes. You file Form 5498 with the IRS each year you contribute to a Roth IRA. Your IRA custodian (the bank or brokerage holding the account) files this form automatically, so you do not need to do anything beyond making the contribution.

Can my employer offer a Roth option in a 401(k)?

Yes. Many employers now offer a Roth 401(k) alongside or instead of a traditional 401(k). Contributions are after-tax like a Roth IRA, but the account is tied to your employer and has different rules. Roth 401(k)s do require RMDs at age 73, unlike Roth IRAs.