Tax Question: this is the first year that TurboTax generated a Form 8453 for me with Form 8949 (Sales and Other Dispositions of Capital Assets) checked. Form 8949 was electronically filed but I just noticed it says "Vanguard-See attached statement". The gains are in VG mutual funds and I received a 1099-B with Box A checked (indicating basis was reported). I don't think I need file this with a schedule listing all individual transactions, but I'd like some confirmation. Is there something I should do differently to avoid this in the future? Thanks for any insight.
There is nothing to avoid in the future since this was out of your control. This occurred because the covered transactions must have also included adjustments.
Yes, send the details and a "cover page," Form 8453, within 3 days of the electronic filing. TurboTax will guide you through this process.
For more information, see: Do I need to fill out or mail in Form 8949?
There were no adjustments. I don't think I'm actually required to send it in, but it was generated and I already efiled and received my refund. So, I'm confused about why it was generated and want to avoid it in the future.
From your posts I can’t quite tell if this is your situation or not, but if all of your individual transactions don't appear on Form 8949, you'll need to send supporting statements that reflect the individual transactions to the IRS with Form 8453.
Please see E-file in the Instructions for Form 8949 for more information.