Assuming that you are referring to the Form 3468 Investment Credit
Enter 3468, investment credit in the Search box located in the upper right of the program screen. Click on Jump to 3468, investment credit
There is not a Business Tab in the 2017 Self-Employed editions as there was in the 2016 editions.
Click on Federal on the left side of the screen.
Click on Income and Expenses at the top of the screen.
Scroll down to Self-Employment, click on show more. Click on the Start or Revisit button
