Backdoor Roth Contributions – What Could Go Wrong?

For some taxpayers, so-called “backdoor” Roth contributions can be a great way to fill an investment bucket that will grow tax free. Tax free is everyone’s favorite kind of money but the IRS has placed limits on how much a taxpayer can put into this advantageous account in a year. For 2022, couples who are married filing jointly can’t put anything into a Roth account if their modified adjusted gross income is over $214,000…at least not directly. That is where the backdoor Roth comes in.


This strategy gets a lot of headlines and is a frequent conversation topic in the industry at this point, but it still gets executed incorrectly all the time. Even assuming that the IRS’s pro-rata rule gets handled appropriately (which it often doesn’t) or just isn’t applicable (it often is), the most basic version of the backdoor Roth contribution gets messed up all too often. It’s not due to a lack of trying, in reality it’s because the reporting system sets people up for failure. Many Financial Advisors don’t realize the custodian reports for tax purposes.


So we are all going into this on the same page, the high level version of a backdoor Roth contribution is that a taxpayer makes a non-deductible IRA contribution and then converts the amount to a Roth account. Because taxes were already paid on the dollars used to fund the IRA contribution, no tax is due on the conversion. Reporting, including on IRS form 8606, is crucial so that the funds actually end up in a Roth account that can grow tax free AND to avoid double taxation of the contribution.


“Wait!” you may object, “I help the client make the after-tax contribution and then convert to Roth, the custodian takes care of the rest”. That is a nice idea but is not reality. Let’s look at the tax documents that your client and their tax preparer are going to receive when you help them do a backdoor Roth contribution.

Form 1099-R

The 1099-R below is from a real client the RTS Tax team works with.



This is one happens to be from Fidelity but we see this from all custodians because they are simply completing the form the IRS gave them. In this case “Sue” contributed the maximum amount to her IRA during the year of $6,000 and then converted the full amount to a Roth account. At the end of the year this 1099-R is sent to Sue who gives it to her tax preparer and it shows a taxable distribution of $6,000. If this form gets entered into tax preparation software as is, Sue is going to pay tax on that $6,000 twice! Completely missing the benefit of the strategy.


For a savvy preparer boxes 2b and 7 are going to be indications that more questions should be asked, but how many of them are going to ask? This isn’t a criticism of tax preparers. Many of them operate in a high volume, deadline driven environment. Not only that, these forms look really official, most people do not get a tax form and immediately question it’s accuracy.


“But wait!”, you’re still objecting, “that’s why the custodian will issue form 5498 as well”. It is true that form gets issued, there are however two problems with relying on the 5498 to sort this issue out for you. 1 – at times the form doesn’t get issued until after the filing deadline and might not be available when the return is being prepared and 2 – it’s really not that helpful (for backdoor Roth purposes at least) even if it is sent out on time.

Form 5498 – Non-deductible IRA Contribution

Here is the 5498 for the IRA Sue made the non-deductible IRA contribution to:



Nowhere on the form does it indicate that the contribution was after tax or non-deductible. It does show the value at the end of the year was $0, but the 1099-R already told us that $6,000 had been distributed (and was apparently taxable), we haven’t learned anything new from this form.


“But wait!” you object with less conviction now, “isn’t there a 5498 for the account the conversion went to, surely that will help us?” We applaud your optimism but no, that won’t help us either.

Form 5498 – Roth Conversion

The 5498 for the account Sue’s conversion went to is below:



Again, there is nothing on this form to let you know that the conversion came from after-tax dollars. We can see that Roth conversions totaling $12,000 were completed during 2021 (there was a second 1099-R for Sue that was as unhelpful as the first) but learn nothing more. It is possible, and quite common, to convert pre-tax dollars and pay the tax at the time of the conversion. This means looking at the 5498 and then the 1099-R that shows a taxable distribution would be nothing out of the ordinary.

Take Action

The tax forms that automatically go out are not setting your clients up for success. Filling out the form 8606 even when you have the right information can be tricky so all the more reason to make sure you are hitting the easy button for your clients and their tax preparers.




  1. Proactive communication – we recommend an annual 1099 Letter or Tax Information Letter that summarizes for your clients tax forms they should expect and any important notes, like a backdoor Roth contribution. Track this information throughout the year so preparing the letter in January each year is easier
  2. Get tax returns for every client every year – there are plenty of reasons you should be doing this already but if you are helping clients with backdoor Roth contributions you absolutely need to make sure it gets reported correctly
  3. Add form 8606 to your annual review checklist – you need to get the return to be able to review it, but your review needs to be intentional and effective as well.

And of course, remember to tip your server, not the IRS!

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