Here's how to change the principal business activity code.
- Open your return, and in the top right click on SEARCH.
- Enter Schedule C without quotes and click the blue magnifying glass icon (do not use the dropdown suggestions.)
- Click on Jump to Schedule C.
- You will arrive at the Summary screen for your business. Click the Review button there to open it back up.
- On the Business Review screen scroll down to the section Tax Details.
- You will see the business code, with a small blue pencil icon next to it. Click that blue pencil icon to edit.
