On December 3, 2009, the Internal Revenue Service announced a reduction to the optional standard mileage rates for 2010.
For the year 2010, the optional standard mileage rate will reduce from 55 cents to 50 cents per mile. Taxpayers have the option of using the optional standard mileage rate to calculate deductible costs of operating an automobile for business purposes.
The rate for computing the deductible medical or moving costs have also reduced to 16.5 cents per mile, however the rate for providing services for charitable organizations has remained unchanged at 14 cents per mile. For further information you can go to the IRS announcement at: http://www.irs.gov/newsroom/article/0,,id=216048,00.html