The business mileage rate increases by 4.5 cents, rising from 51 cents-per-mile to 55.5 cents-per-mile for all business miles driven during the second half of 2011. The medical/moving mileage rate also increases by 4.5 cents-per-mile for the final six months of 2011 but the charitable mileage rate, set by Congress, remains unchanged. Miles must be presented on a miles log by date or split your miles into two subsets: prior to July 1 & after July 1.
