If you delete the Form 1099-INT, that will delete all the information you entered about the form. While signed in and working in TurboTax Click on Federal in the left-hand black menu Click on Income and Expenses Scroll down to Interest and Dividends Click on Start or Revisit Interest on 1099INT Click through until you see a page with all your 1099INT listed. Choose the garbage can next to the forms you want to be deleted.