Hi @Rivet1 !

You can enter your business expenses into TurboTax during the interview/EasyStep process (depending on which version of software you're using). To do this:

1. Select the Search bar (binoculars icon), and type in business
2. Select Business or Professional Activities, then select Go
3. Continue answering questions to enter your business information (if you haven't done so already)
4. In the section after Vehicle CCA, you will start to get questions related to your business expenses (starting with paying for advertising)

Hope this helps, and happy filing!