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Get your taxes done using TurboTax
Yes, you can amend the last three years returns to include Form 8606. You'll be mailing just Form 1040X, and Form 8606.
You can send in just Form 8606 for the years outside the amendment window.
Here's more info on How to Trigger Form 8606 and discussion on Back Door Roth Conversion for Multiple Years.
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March 19, 2025
1:46 PM