I'm a little embarrassed to ask since I'm an accountant of sorts, but I've never been able to find a definitive answer to this. Perhaps it is more "working knowledge" that someone in the personal tax field is comfortable with. On deductible medical (or any) miles, what is considered the start and end point on the trip for mileage calculation purposes? I'm asking because it is almost never a cut-and-dry situation. Many people begin their trip to the doctor from an employer, from an errand destination, or just while "out," not neatly from home, to doctor, to home. If a...