If you are using a MAC program, there is a reported screen issue for entering business expenses in TurboTax where the data displayed says 2016 and the entry fields say they are for 2017. 

If this is the case for you, be aware that this is only a screen issue and will not affect the data of your return.  Plus, see the link below and scroll down to where you can submit your email to be notified of when this issue is corrected.

https://ttlc.intuit.com/replies/7079264