@harborhits1 wrote:
Principal place of business? is at home where I do all billing, estimates, paperwork, accounting
at my desk that is not exclusively used for business.
While my reading of the Tax Code thinks that mileage to and from your home should qualify because your home is your "Principal Place of Business", there *IS* a Tax Court case that specifically says that is NOT deductible because you do not have a space that was used "exclusively" for business.
