Incorrect 8949 short-term transactions box checked

[notaburritofan]

Before my 1099-B was available from my broker, I went through the preparation process and answered "no" to the "have you received a 1099-B" question, resolving to update this when the 1099-B became available. When the 1099-B became available, I edited the existing investment information to provide my realized gains summary information. In hindsight, this was pretty stupid and set up this entire chain of events. What I should have done was delete my existing 1099-B record in turbotax & create a new one to answer "yes" to the 1099-B question. I was notified AFTER e-filing my federal taxes that I am now required to provide forms 8453 & 8949 by mail. Had this notification occurred before e-filing was submitted (it's not very good UX to be sidelined by this notification AFTER filing), it would definitely have been enough of a flag for me to review the 1099-B with more careful attention.

That aside, on form 8949 I should have checked box A for 1099-B showing basis was reported to the IRS (according to documents from my broker), which would have negated the necessity for 8453 & 8949. The confusion I have is: do I amend my filing to update the 8949 from box C to box A, or would mailing 8453 with the "recipient copy" of the 1099-B provided by my broker be adequate?

Thanks in advance.

[npierson7 · Accepted solution]

You don't have to amend your filing to change the mark sign of the boxes, it isn't critical mistake and won't affect your tax return. You need to add a copy of your Form 1099-B to your Form 8453 and mail it the the IRS.  

[notaburritofan]

This is what I suspected. I'll do things this way and see how it goes. Appreciate your attention to this question.

[Dsarts]

Thank you @npierson7  for your response.  Note to TT - I agree with the submitter.  Had the notification occurred before e-filing was submitted, I believe I would have identified my error and corrected it prior to submission.  Perhaps an enhancement for next year.  Thanks.

[fanfare]

when mailing is required, there is a notification telling you the mailing address to use.

You must have missed it.