Amend

: Only after your original return has been accepted.

To amend a paper filing or document, you generally submit a specific form—like the for tax returns—that lists the original figures, the changes, and the final corrected amounts. Tax Amendments (IRS Form 1040-X) : Only after your original return has been accepted

: Form 1040-X requires you to list the original amount (Column A), the net change (Column B), and the corrected amount (Column C). : Generally three years from the original filing

: Generally three years from the original filing date or two years from when you paid the tax. the net change (Column B)

: You can still receive your original refund; any additional amount from the amendment will be sent separately. Legal and Patent Amendments 714-Amendments, Applicant's Action - USPTO

: Attach new forms or schedules that changed, plus proof like W-2s or 1099s .