You will have to upgrade to the TurboTax Self-Employed version to complete the transaction
In your TurboTax Deluxe online program:
1. After sign in, select Take me to my return
2. Across the top, in the search box, type in schedule c and Enter
3. Select Jump to schedule c
4 On screen, Tell us the type of self-employment work you do, enter information and select Continue to proceed
5. On screen, Did you have any expenses for your business in 2017? Select Yes
6. On Upgrade screen, select - Upgrade to TurboTax Self-Employed
7. Next screen, We'll get to your expenses soon- select Continue
8. On screen, Tell us about any expenses for your business, expand Less common expense for additional expenses