Here is the industry codes list to be used when completing the interview for your self-employment operation.
Enter the industry code that corresponds to your business. If more than one code describes your business, or if your business has more than one activity, use the code that most closely describes your main business activity.
For example, you might operate a bookstore. However, the store might also sell postage stamps. You would still use industry code 451310 (for book stores and news dealers) and not 491110 (for postal service).
Select the industry group to view the industry's name and code.