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New Member
posted Apr 23, 2025 8:14:55 AM

reporting solo 401k contribution

Hi. My CPA told me that he encountered an error when filing my Solo 401(k) contributions on my tax return. We planned to report $26,000 in voluntary after‑tax contributions and $8,000 in employer Roth contributions, but the $8,000 employer contribution wasn’t reported in Box 5b of Form 1040 due to the error. 

 

I’ve attached a screenshot of our initial report and form 1099R. Does anyone see what might have caused the error? Thanks for your help!

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3 Replies
Expert Alumni
Apr 23, 2025 9:10:30 AM

I can't see the initial report. But I can tell you that what your screenshot shows is that you rolled $36,000 over from one retirement account to another of which $8000 was taxable - either because you kept it and didn't roll it over or because you rolled it over from a traditional to a Roth account.  

 

Those numbers don't seem to jibe with what you are saying that you are trying to do.  It looks like the entries that you made have been made in the wrong parts of the program.

 

@gamjatang 

New Member
Apr 23, 2025 11:26:40 AM

Hi Thank you for your response.

Here some details of 1099R form.

1. Gross distribution $36000

2a. Taxable amount: $8000

5 Employee contributions/ designated roth contributions or insurance premiums: $28000

Other sections are blank.

 

 

so what was i supposed to do?

How should i have filled out on the form 1040? 

Expert Alumni
Apr 29, 2025 10:55:49 AM

Is there a number or letter in box 7? What is the distribution code? A 1099-R is not for contributions, but for distributions from a retirement plan. I would check with your CPA to make sure your contributions were reported on your business return correctly.