Thank you @fanfare for your reply and patience!
You asked: "Did you make any non-deductible contributions 2022 and later, or take distributions?"
Answer: In 2022 I made a contribution and took a deduction for an amount that, as for 2021, was discovered to be excessive in 2025. No Form 8606 was filed with my original 2022 return (makes sense, since I deducted the contribution). In 2025, I did a corrective distribution for that 2022 contribution as well. I'm also preparing a Form 1120-X for 2022 that will eliminate the 2022 IRA deduction and report the Form 5346 excessive contributions (for 2021 and 2022).
Re Form 8606 for 2022, I think I see what you're saying ... hey, don't file a Form 8606 with your 2022 1120-X because you don't need to. You and the IRS will know to go by the last filed Form 8606, which will be from 2020, and it will have the correct IRA basis figure, which hasn't changed despite all your various excessive contributions and fixes of same. Is that a correct understanding of what you think? Thank you.
