You will not be able to e-file your return till the depreciation form is available at a later date. Depreciation (Form 4562 for schedule C) will be ready to be e-filed on 02/01/2018 (that is the expected release date).

The IRS will not start processing returns until January 29. If you e-file before then, your return will be saved on TurboTax servers and passed to the IRS when it starts accepting returns on the 29th.

Please check Form Availability Dates for the most up-to-date information.