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Where to Enter the Principal Business Activity And Code Number – Business Returns

The Principal Business Activity Code for a company must be entered in order to file a business return electronically.  The Principal Business Activity and Code Number are entered in various menus depending on the entity of the business return you are preparing.  If you do not know the Principal Business Code, you can view the entire list of Business Codes and Business Categories by selecting one of the icons from any of the menus below.


To enter the Principal Business Activity and Code Number:Form 1120 – From the Main Menu of the Tax Return (Form 1120) select:

  • Schedule K – Other Information
  • Business Activity Code No.
  • Business Activity

Form 1120-S – From the Main Menu of the Tax Return (Form 1120-S) select:

  • Heading Information
  • Other Information
  • Business Code

Form 1065 – From the Main Menu of the Tax Return (Form 1065) select:

  • Heading Information
  • Other Categories
  • Business Code
  • Principal Business Activity

Form 1041 – Does not use or require Principal Business activity descriptions or Business Codes.
Form 990 – Does not use or require Principal Business activity descriptions or Business Codes.

Updated on September 8, 2020

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