If you are amending, Form 8453 is not used since any other paper records are included with Form 1040-X
@Mike9241
"i point out that Turbotax has a major flaw. Even security transactions of types A and D (proceeds and basis reported to IRS) with no adjustments are imported into the 8949 rather than directly into Schedule D lines"
which year is that.?
Based on comments on the forum from last season:
A couple of years ago, TurboTax changed the processing of Form 8949 in an undocumented way.
TurboTax takes advantage of this rule (Schedule Line 1a,8a) and suppresses some line item details.
Based on prior forum complaints about this. it's not clear exactly what rule it is using, and there is no way to force TurboTax to list all transaction details on Form 8949, as allowed by IRS.
@rwom1217
Do not include your old 1040 nor your revised 1040 because the Form 1040-X reflects any changes there and becomes your new tax return.
Include any new/corrected document only if it shows federal tax withheld, and include in order only those Sequence Numbered tax forms and Schedules that changed or were added due to your amendment.
Attachment Sequence Number is on all the forms and Schedules that come after 1040.
If you are using TurboTax you have to do this by visual comparison. The program won't break out those pages for you.
If your amendment dropped a form,
you should include with Form 1040-X a new copy of the form(s) with -0- in the appropriate lines.
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If any forms specify an attachment, put all those attachments at the end in the same order as the forms they go with.
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Mail to the address shown for your location in the most recent Instructions for Form 1040-X.
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IRS doesn't seem to care much about "additional details" for Form 8949.
so I'm suggesting you can ignore "See Attachment" in this scenario.
