Last year when submitting my taxes, I forgot to include my 1099-B form from my investment account. How do I go about submitting the 2017 form, so that I am not penalized?

[fanfare · Accepted solution]

Use 2017 form 1040X to correct or add information to your already filed 2017 tax return.

The blank form in fillable PDF format and its instructions are available at www.irs.gov.