maglib
Level 11

Get your taxes done using TurboTax

https://turbotax.intuit.com/tax-tips/amend-return/how-to-file-an-amended-return-with-the-irs/L6kO691...  has a detailed answer to how to amend your return.  you possibly may owe interest and penalties.  It can be a little confusing but, it works.  

**I don't work for TT. Just trying to help. All the best.
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I am NOT an expert and you should confirm with a tax expert.