Do I need to file Form 8606?

[Socket1021]

 Since I am retired, I no longer contribute to my IRAs, and I am also below RMD age.  On the advice of my financial advisor, I did a partial conversion to a Roth IRA from my traditional IRA in both 2024 and 2025, and I made estimated tax payments to cover the income tax due on the IRA conversion to avoid underpayments.  

Because I had never done a conversion before, I had an outside accountant do my taxes for me.  He did not include  a Form 8606 in the filing.  When I did my taxes this year on TurboTax, I was not prompted to fill out Part II of Form 8606, either.  In both years, the full amount of the conversion was included in my income and reported on my 1040. 

Do I still need to manually file Form 8606 for both 2024 and 2025? It seems redundant because I am being taxed on the full amount of the conversion.  Thank you.

[MaryK4 · Accepted solution]

Yes, if you converted from a traditional IRA to a Roth IRA, you must include a Form 8606 for each year you converted. Yes, you are correct that it is already taxed based on the 1099-R entry; but if there were any nondeductible traditional IRA contributions, the pro-rata taxable amount would be recorded on the 8606.  

[Socket1021]

Thank you.  I went back into Turbotax and was able to get the Form 8606 to generate.

For 2024, I believe that I have to file Form 1040-X, leave lines 1-23 blank, since my tax liability has not changed, and attach Form 8086 for 2024, noting that it was omitted from my 2024 return.  Is that correct?  Thanks again.