If you have business assets that are being depreciated or if you have ongoing expenses or income that you are still paying, you will still need to file Schedule C.
If you have a business, if it is still in operations, even though you have not received any income this year, as long as the doors are still open and available to work, you can still file Sch C.
If you did not drive miles for the Sch C then you would not claim any mileage expenses.
