It is your business.
Because you're running your own business, you'll file your expenses (Schedule-C) in TurboTax just like any other self-employed person.
Where do I enter my Uber or Lyft expenses?
https://ttlc.intuit.com/replies/5370677
Tax Tips for Uber, Lyft, Sidecar and other Car Sharing Drivers
https://turbotax.intuit.com/tax-tips/self-employment-taxes/tax-tips-for-uber-lyft-sidecar-and-other-...
[Edited 01/11/18 [5;15 PM]]
