Inherited IRA with basis, form 8606, TaxAct

I inherited a small traditional IRA in 2017 from my mom, who had already started taking RMDs. I took her RMD last year (for 2017). She had basis in her IRA and I have the form from her accountant which shows how much. Now in doing my taxes, I cannot see how to indicate this in TaxAct. But I googled this problem online, and found this link:

https://www.taxact.com/support/21070/2017/ira-inherited-form-8606

Which says:

Inherited traditional IRA distribution with basis and did not own traditional IRA distributions. If you took a distribution from a traditional IRA you inherited which had a basis, and had no distributions from IRAs which you own, figure the taxable amount of the inherited traditional IRA distribution using the Retirement Plan Distributions Worksheet after entering the distribution on Form 1099-R. File a paper return and include all copies of Forms 1099-R and 8606.

Now I found a similar, older thread where Alan and spiritrider commented about this same problem and observed this might be a tax software problem. Four years later, is that still the case? In other words, there is no work around, no way to avoid having to paper file? This implies I will have to paper file for as long as I keep this IRA, and take RMDs, correct? If that is the case, her basis is high enough as a percentage that I will likely close out the IRA this year to avoid the problem in the future. Of course it’s too late for 2018.



  • If anyone sees this and knows of a tax program that does support inherited IRA basis, please post.
  • You will have to weigh the importance of continuing to use Tax Act and paper file, filing with a different tax program, using a tax preparer with professional software, forfeiting the basis, or taking large distributions to shorten the duration of this problem. Taking larger than RMD distributions to eventually fully distribute the inherited IRA will cost you more than paying a professional provider UNLESS you are not maxing out your own workplace plan contributions like a 401k. In that case, you could take the large distributions and offset the taxes by increasing your pre tax 401k or similar contributions. Not only that but your own RMDs are probably a few years away and would be calculated with a much lower distribution % than an inherited IRA. Some combination of all these ideas might also be considered. Of course, you said the balance was small and that has a major effect on your choice of options.
  • Lack of tax program support is also aggravated by having to maintain separate 8606 forms in cases where the beneficiary IRA and the owned IRA both contain basis. In that case, the IRA that any 8606 applies to must be identified using an explanatory statement or comparable.
  • Not sure if your mother completed her 2017 RMD or not, but if not you should have completed it by 12/31/2017 and would get a 1099R to report on your return. If not, then you need to file a 5329 to get the penalty waived, and the IRS would almost always approve the waiver. Otherwise, your first beneficiary RMD is not due until 12/31/2018 so you have plenty of time to consider the options. To file in 2018, you will need to secure the remaining basis figure from the 2017 8606 (if any) on your mother’s final return. Her accountant has not filed that final return yet (and I wonder if he knows to enter the date of death value for her 2017 8606 instead of the year end value. For 2018, you would use the 12/31/2017 value of the inherited IRA.

Thank you Alan,It has a basis of about 50%, and the total is only about $50k. I can avoid having to deal with this for many decades by simply distributing 100% of the IRA during 2018, and paying ordinary income taxes on the ~$25k, correct?I already max out all retirement accounts.I do a backdoor Roth IRA each year, which requires an 8606. Does this create additional complications?  

No additional complications, just the tax bill on the 25k taxable amount and how you file the return given the inherited IRA 8606.

deleted for the time being while I sort out

thank you alan, 

In comparison, TurboTax accommodates this situation differently.  TurboTax does not support the preparation of any Forms 8606 for distributions from inherited IRAs with basis.  Instead, TurboTax requires that the user prepare the necessary Form(s) 8606 separately from TurboTax, enter the taxable result for each code 4 Form 1099-R entered, then paper-file with the manually prepared Form 8606 included with the forms printed by TurboTax.  Less convenient than TaxAct for users who have IRAs inherited from only one individual, but it does accommodate your situation.

In similar fashion, if you passed and Mom’s IRA passed to a successor beneficiary named by you, and that beneficiary also inherited your own IRA with it’s own basis, that beneficiary would also have to file an 8606 for each inherited IRA, could not combine the inherited IRAs and would have different RMD divisors for those IRAs. In other words, your successor beneficiary would also inherit your filing challenges unless tax software providers feel there is enough of these situations to fully support them. The IRS also needs to provide more detailed guidance in Pub 590 B and the 8606 Inst.

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