The new six-month rate for computing deductible medical or moving expenses will also increase by 4.5 cents to 23.5 cents a mile, up from 19 cents for the first six months of 2011. The rate for providing services for charitable organizations is set by statute, not the IRS, and remains at 14 cents a mile.
The IRS typically updates mileage rates once per year but cited increased gasoline prices as the reason for the mid-year adjustment. Taxpayers have the option of calculating the actual costs of using their vehicle rather than using standard mileage rates.