This is the six-digit code describing your primary business activity that you will enter on your Schedule C!
If you drive for a rideshare company like Uber or Lyft, you’ll use the same business activity code as taxi and limousine drivers. The code is 485300.
For delivery drivers such as Doordash and Postmates the code is 492000 -- couriers and messengers.
For real estate agents & brokers the code is 531210.