You can deduct trips you take that are primarily for business purposes. There are two ways to claim care expenses. If you use the standard mileage rate you can deduct $.50 a mile for 2010, plus the business portion of car loan interest, personal property tax, and parking expenses.
The second way is to claim the business portion of all the actual expenses of operating the car.
The business portion is determined by adding up all the business mile and dividing the total by the total number of miles the car was driven in the year.
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