The choice depends on your tax bracket now versus what you expect in retirement

Choose a Roth IRA if you are in a lower tax bracket now than you expect to be in retirement, or if you want tax-free withdrawals later and do not mind paying taxes on the money going in. Choose a traditional IRA if you are in a higher tax bracket now and expect to be in a lower one when you retire, because you get a tax deduction today.

The core trade-off is simple: traditional lets you deduct contributions from your taxable income this year, but you pay income tax on withdrawals in retirement. Roth takes no deduction now, but withdrawals in retirement are tax-free. The math works in your favor whichever way your tax bracket moves down.

If you cannot predict your future tax bracket—which is honest, because tax law changes and your income is uncertain—a middle path exists: split contributions between both types, or start with one and reassess in a few years.

Key Takeaways

  • A traditional IRA deduction reduces your taxable income this year, which saves you money now if you are in a higher tax bracket than you expect in retirement.
  • A Roth IRA costs you taxes now but gives you tax-free withdrawals later, which wins if your tax bracket rises or if you want flexibility in retirement.
  • Your income, filing status, and whether you have access to a workplace retirement plan all affect whether you can deduct a traditional IRA contribution.
  • You can contribute to both types in the same year as long as your total does not exceed the annual limit, which allows you to hedge your tax bet.
  • Roth conversions let you move money from a traditional IRA to a Roth and pay taxes on it, a useful option in years when your income is lower than usual.

When a traditional IRA deduction actually saves you money

A traditional IRA deduction is only valuable if your income is high enough that you are in a tax bracket where the deduction matters. If you earn $50,000 and contribute $7,000 to a traditional IRA, that $7,000 comes off your taxable income, which could save you $1,050 to $1,400 depending on your tax bracket and state taxes.

But the deduction phases out if you have a workplace retirement plan—a 401(k), 403(b), or similar—and your income exceeds a threshold. For 2024, if you are single and covered by a workplace plan, the deduction begins to phase out at $77,000 of income and disappears entirely at $87,000. If you are married filing jointly and your spouse has a workplace plan, the phase-out starts at $123,000 and ends at $143,000. These numbers change each year.

If you do not have a workplace plan, you can always deduct a traditional IRA contribution, no matter your income. If your spouse does not have a workplace plan but you do, your spouse can deduct their contribution up to a higher income threshold.

Why Roth makes sense if you expect higher taxes later

A Roth IRA has no deduction now, but the money grows tax-free and you withdraw it tax-free in retirement. This wins if your tax bracket is likely to rise—either because tax rates themselves go up, or because your retirement income will be higher than your working income.

Roth also wins if you simply want certainty. You know exactly what you paid in taxes on the money going in. You do not have to guess what tax rates will be in 20 or 30 years. You also do not have to take required minimum distributions (RMDs) from a Roth at age 73, which means you can leave the money untouched longer if you do not need it.

Roth contributions have income limits. For 2024, if you are single, you can contribute the full amount if your income 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 is $230,000 to $240,000. These limits also change yearly.

Income limits and whether you can contribute at all

Your ability to use either account depends on how much you earn. The income thresholds are different for each type and change every year based on inflation.

For a traditional IRA, there is no income limit on who can contribute, but the deduction phases out if you have a workplace plan and earn above the threshold mentioned earlier. If you earn too much to deduct a traditional contribution, you can still contribute the money, but it goes in after-tax and grows tax-deferred—a less useful outcome.

For a Roth, the income limit is a hard ceiling. Once you exceed it, you cannot contribute directly. However, you can use a backdoor Roth: contribute to a traditional IRA (non-deductible), then convert it to a Roth and pay taxes on any gains. This is legal and common for high earners, but it has a complication: if you already have traditional IRA money, the conversion is taxed on a pro-rata basis, which can make the strategy expensive.

How to split contributions if you are unsure

You do not have to choose one type and stick with it forever. You can contribute to both a traditional and a Roth IRA in the same year, as long as your total contributions do not exceed the annual limit. For 2024, that limit is $7,000 if you are under 50, and $8,000 if you are 50 or older.

Splitting lets you hedge: put some money in a traditional IRA to get a deduction now, and some in a Roth to lock in tax-free growth later. If your tax bracket is uncertain, this is a practical middle ground. You might put 60% in traditional and 40% in Roth, or any split that matches your guess about your future taxes.

You can also reassess each year. If you have a good income year, you might skip the traditional deduction and max out a Roth instead. If you have a low income year, you might do the opposite. This flexibility is one reason many people use both accounts over time.

Roth conversions: moving money from traditional to Roth

A Roth conversion lets you take money from a traditional IRA and move it to a Roth. You pay income tax on the amount converted in the year you do it, but the money then grows tax-free in the Roth.

Conversions are useful in years when your income is unusually low—a job loss, a sabbatical, or early retirement before you claim Social Security. You convert at a low tax rate, and the money is then locked in tax-free. This is also how high earners use the backdoor Roth: they contribute to a traditional IRA and immediately convert it.

One warning: if you convert, you owe taxes on the conversion in that tax year. If you convert $50,000 and you are in the 24% tax bracket, you owe roughly $12,000 in federal tax. Plan for this before you convert, or you may face a large tax bill.

What happens to each type in retirement

In retirement, a traditional IRA requires you to take required minimum distributions (RMDs) starting at age 73. The IRS calculates the minimum based on your age and account balance, and you must withdraw at least that amount each year or face a 25% penalty on the shortfall (reduced to 10% if you correct it quickly). These withdrawals are taxed as ordinary income.

A Roth IRA has no RMDs during your lifetime. You can leave the money untouched as long as you want, which is useful if you do not need the income or want to pass the account to heirs. Your heirs will have to withdraw the money within 10 years under current law, but the withdrawals are still tax-free.

If you have both types, you can manage your tax bill by taking more from one account than the other in any given year. This flexibility is valuable if your income fluctuates or if you want to stay in a lower tax bracket.

Frequently Asked Questions

Can I contribute to both a Roth and traditional IRA in the same year?

Yes, but your combined contributions cannot exceed the annual limit ($7,000 for 2024 if you are under 50). You might put $4,000 in a traditional IRA and $3,000 in a Roth, for example. This is a common way to hedge your tax bet.

What if I already have a traditional IRA and want to do a backdoor Roth?

You can still do it, but the conversion is taxed on a pro-rata basis. If you have $100,000 in a traditional IRA and convert $10,000 to a Roth, the IRS treats the conversion as coming proportionally from pre-tax and after-tax money. This can result in a larger tax bill than if you had no existing traditional IRA. Consult a tax professional before converting if you have substantial traditional IRA balances.

Do I have to take money out of a Roth IRA in retirement?

No. A Roth IRA has no required minimum distributions during your lifetime. You can leave the money untouched and let it grow, or withdraw as much or as little as you want. This makes a Roth useful if you do not need the income or want to pass the account to heirs tax-free.

What if my income is too high for a Roth but I want one anyway?

Use a backdoor Roth: contribute to a non-deductible traditional IRA, then convert it to a Roth the same year. You pay taxes on any gains, but the contribution itself is not taxed again. This is legal and widely used by high earners, though the pro-rata rule can complicate it if you have other traditional IRA money.

Can I change my mind and switch from traditional to Roth later?

Yes, through a conversion. You can convert a traditional IRA to a Roth at any time, though you will owe taxes on the pre-tax portion in the year you convert. Many people do this in low-income years to minimize the tax hit. You cannot undo a conversion, so plan carefully.