IRS Releases 2012 Standard Mileage Rates
The standard mileage rate for transportation or travel expenses is 55.5 cents per mile for all miles of business use (business standard mileage rate).
The standard mileage rate is 14 cents per mile for use of an automobile in rendering gratuitous services to a charitable organization under § 170.
The standard mileage rate is 23 cents per mile for use of an automobile (1) for medical care described in § 213, or (2) as part of a move for which the expenses are deductible under § 217.