I have an excel spread sheet that I use as both my calendar of shops and mileage log. I keep track of what company, starting and ending mileage for the days shops, what my fee is, what I spent, what they reimburse and any bonuses. I also have a column for when they pay and how much. I can easily keep track of mileage, payment coming in and who still owes me.
It also comes in handy of documenting what i "made" in a week when I report my weekly unemployment earnings.
As for mileage, keep the log for historical purposes but the IRS really only wants the total number of miles accrued for your business and the start and ending mileage for the car used during that year.
Of course if you are audited the more detail you can give the better.
~~*~~*~~*~~ kal ~~*~~*~~*~~
Everyone has a photographic memory. Some just forget to load the film.