Come tax season, people are always asking me about mileage logs. A recent Tax Court case highlights the importance of keeping a log. In the case, a Mr. Keith Dunford lost $93,656 in business deductions for his business motorhome and two business cars due to lack of a business mileage log. Receipts are Not Enough Even though he had receipts for the expenses of his vehicles, his failure to keep mileage logs left the courts unable to determine the extent of the business use of his vehicles. The issues considered by the court included the ability of the Dunfords to deduct the depreciation and other expense of the motorhome and their business vehicles, whether the interest expense on the loan … [Read more...]