Backdoor Roth – Contribution to TIRA after filed taxes

Client made contribution to Non-Deductible IRA after filing taxes. Essentially, filed his taxes in March 2021 and made a 6,000 contribution to his non-deductible Traditional IRA in April for the prior year. I immediately converted the contribution to his Roth.

Can the client file form 8606 – which I assume was not filed when he did his taxes? Does he need to amend his taxes for 2020?



The missing 2020 8606 can be filed alone showing the contribution on lines 1,3 and 14, and the line 14 basis will  carry over to line 2 of the 2021 8606 reporting the conversion. Any 2021 ND Contribution will go on line 1 of the 2021 8606. 

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