Backdoor Roth IRA

Written by True Tamplin, BSc, CEPF®

Reviewed by Subject Matter Experts

Updated on February 22, 2024

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What Is a Backdoor Roth IRA?

A Backdoor Roth IRA helps high-income earners get money into a Roth IRA.

With this set-up, they contribute money that has already been taxed to a regular IRA and then convert it into a Roth IRA.

Even though they may not be eligible to contribute to a Roth IRA income-wise, this process helps them enter one through the backdoor.

High-income earners can always opt to contribute their pre-tax income to a traditional IRA because it does not have income limits like the Roth IRA.

However, some of them prefer the Roth IRA's set-up where they pay tax upfront and take advantage of tax-free withdrawals later on.

A backdoor Roth IRA is currently acceptable under the law and respected by the Internal Revenue Service (IRS), provided all tax law requirements are followed.


Roth IRA Income Limits in 2023 and 2024

Direct Roth IRA contributions are limited to those whose modified adjusted gross income (MAGI) does not exceed certain limits. Below is a summary of these limits.

Roth IRA Income Limits in 2023 and 2024

Backdoor Roth IRA conversions are a good alternative for participants whose annual income exceeds the limits mentioned above.

Although anyone can take advantage of this strategy, high earners who have access to a workplace retirement plan have the most incentive to do so.

This is because they may not be allowed to deduct traditional IRA contributions from their taxes if they exceed income restrictions.

How to Set up a Backdoor Roth IRA

If you want to set up a Backdoor Roth IRA, there are a few steps you need to take:

Step 1: Open and Fund a Traditional IRA Account or Contribute to an Existing Traditional IRA

You can choose between opening a new traditional IRA or using an existing traditional IRA.

However, one disadvantage of contributing to a traditional IRA is that you must consider any pre-tax components as ordinary income during the year in which the conversion takes place.

Simply put, since Roth IRA contributions are designed to be made after taxes, you must pay taxes on any converted funds that have not yet been subjected to tax.

You may approach a financial advisor for guidance in this situation.

Step 2: Convert Your Traditional IRA to a Roth IRA

It is best to convert your new traditional IRA to a Roth IRA as soon as possible to prevent investment gains from accruing.

Failure to do this would require you to pay tax on these gains when you perform the Roth IRA conversion.

There is no limit time-wise on when you can convert a traditional IRA to a Roth IRA so you can convert an existing traditional IRA anytime.

However, you should be aware that the amount of money you have in your existing traditional IRA could affect how much tax you owe later on.

Step 3: Pay Your Taxes

Roth IRAs can only accept post-tax dollars.

Therefore, you must return any tax deduction you received for contributions made to your existing traditional IRA, when you file your tax return.

On the other hand, if you are funding a new traditional IRA, you can simply make a nondeductible contribution and submit IRS Form 8606.

Backdoor Roth IRA Special Tax Considerations

Before trying a backdoor Roth IRA conversion, here are some specific tax considerations.

Five-Year Rules for Backdoor Roth IRAs

The are two five-year rules governing Backdoor Roth IRAs:

  • According to the primary five-year rule, you cannot withdraw Roth IRA gains free of taxes or penalty fees unless your first contribution to the account was made at least five years ago. This guideline still applies even if you are over age 59 1/2.
  • There is an additional five-year restriction specifically applicable only to backdoor Roth conversions. You cannot access any of the funds held in the converted Roth IRA without penalty for the first five years following conversion.

If you fail to abide by either of the five-year rules, you may be subject to a 10% penalty.

The Pro-Rata Rule

The Pro-Rata Rule is used to assess how tax-deferred money should be taxed upon withdrawal.

Basically, it states that your Roth conversion will be taxed proportionately when it is funded by a mix of pre-tax and post-tax contributions.

In a nutshell, if you've already paid taxes on money that you've put into a Traditional IRA, you won't have to pay again after converting it into a Roth IRA.

However, you can't choose which funds are used for the conversion - the IRS will decide for you.

For instance, let's say you have $150,000 in a Traditional IRA, with $15,000 coming from nondeductible contributions. This means that you have a 10% non-taxable percentage.

Assuming you want to convert $15,000 to a Roth IRA, the converted amount must come from 90% pre-tax funds and only 10% after-tax funds.

After the conversion, you have to pay taxes on 90% of the converted amount, which in this case, is $13,500. This also means that $1,500 or 10% of the original nondeductible $15,000 remains in the Traditional IRA.

Any additional pre-tax contributions to your traditional IRAs would further affect your Pro-Rata percentage, making future withdrawals harder than you might anticipate.

You may consult a financial advisor if you're thinking of converting your backdoor Roth to assist you in handling the process in a way that reduces potential tax liabilities.

Is a Backdoor Roth IRA Conversion a Good Idea?

The Backdoor Roth IRA strategy might not be suitable for everyone's financial condition.

Who Will Benefit from a Backdoor Roth IRA?

  • Investors who want to avoid required minimum distributions (RMDs) once they turn 73
  • High earners who aren't allowed to contribute to a Roth IRA due to income limits
  • Those who are able to pay the taxes associated with a Roth conversion and want to benefit from future tax-free growth

Who Might Not Benefit from a Backdoor Roth IRA?

  • Those who have access to a Roth 401(k) at work but haven't maxed it out or who are already qualified to make contributions to a Roth IRA
  • People who plan to use the converted money in less than five years
  • Those who have additional traditional IRAs that could complicate things to the point where the tax implications supersede the advantages

It is best to speak with a financial advisor to see if a Backdoor Roth IRA conversion is the best move for you.

Final Thoughts

The Backdoor Roth IRA is a great way to get around the income limitations of a regular Roth IRA. It allows high-earners to take advantage of the benefits of a Roth IRA without being disqualified by its limits.

To set up a Backdoor Roth IRA, you first contribute to a Traditional IRA. You then convert the funds in the Traditional IRA to a Roth IRA and pay tax as needed.

Before you convert, you should be aware of relevant tax implications such as the pro-rata and five-year rules.

Consulting with a financial advisor and other professional experts is the best way to see if a Backdoor Roth IRA conversion makes sense for you.

Backdoor Roth IRA FAQs

About the Author

True Tamplin, BSc, CEPF®

True Tamplin is a published author, public speaker, CEO of UpDigital, and founder of Finance Strategists.

True is a Certified Educator in Personal Finance (CEPF®), author of The Handy Financial Ratios Guide, a member of the Society for Advancing Business Editing and Writing, contributes to his financial education site, Finance Strategists, and has spoken to various financial communities such as the CFA Institute, as well as university students like his Alma mater, Biola University, where he received a bachelor of science in business and data analytics.

To learn more about True, visit his personal website or view his author profiles on Amazon, Nasdaq and Forbes.

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