: Only after your original return has been accepted.
Use IRS Form 1040-X to correct errors on individual income tax returns like the 1040 or 1040-SR. : Only after your original return has been accepted
: Attach new forms or schedules that changed, plus proof like W-2s or 1099s . : 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
: Generally three years from the original filing date or two years from when you paid the tax.